Monitoring and evaluation method after implementation of key area city updating

Abstract

The invention discloses a method for monitoring and evaluating after implementation of updating of a city in a key area, and relates to the technical field of informatization. Constructing a city updating resource library of key areas according to categories and themes; updating and implementing monitoring evaluation; implementing problem feedback; and updating project library modification. The method has the advantages that by constructing a targeted index system and an evaluation model, monitoring and evaluation are carried out on key areas after city updating implementation, the situation after city updating project implementation is comprehensively evaluated, implementation problem feedback is carried out, and city updating project information of the key areas is dynamically updated and maintained; and a technical support is provided for dynamically evaluating urban updating implementation conditions and performing targeted optimization and improvement.

Description

Technical Field

[0001] The present invention relates to the field of information technology, and specifically to a method for monitoring and evaluating the implementation of urban renewal in key areas based on urban renewal project information, idle land and renewal resources, and urban renewal project reserve data, by constructing a targeted indicator system and evaluation model, comprehensively evaluating the situation after the implementation of urban renewal projects, and providing feedback on implementation problems, dynamically updating and maintaining urban renewal project information in key areas, and providing technical support for dynamically evaluating the implementation of urban renewal and targeted optimization and improvement. Background Art

[0003] By consulting the relevant literature on urban renewal, it is found that there are relatively many evaluations before the implementation of urban renewal, but relatively few monitoring and evaluations after the implementation of urban renewal in key areas. Based on the urban renewal project information, idle land and renewal resources, and urban renewal project reserve data, a targeted indicator system and evaluation model are constructed to conduct post-implementation monitoring and evaluation of urban renewal in key areas, comprehensively evaluate the post-implementation situation of urban renewal projects, provide feedback on implementation issues, dynamically update and maintain urban renewal project information in key areas, and provide technical support for dynamically evaluating the implementation of urban renewal and targeted optimization and improvement. Summary of the invention

[0004] In order to overcome the drawbacks of existing technical solutions, it is realized that based on urban renewal project information, idle land and renewal resources, and urban renewal project reserve data, a targeted indicator system and evaluation model are constructed to conduct post-implementation monitoring and evaluation of urban renewal in key areas, comprehensively evaluate the post-implementation situation of urban renewal projects, and provide feedback on implementation issues. The information of urban renewal projects in key areas is dynamically updated and maintained, providing technical support for dynamically evaluating the implementation of urban renewal and targeted optimization and improvement.

[0005] A method for monitoring and evaluating the implementation of urban renewal in key areas, the method comprising the following steps: constructing a resource library of urban renewal in key areas by category and topic: sorting out the data of urban renewal projects, idle land and renewal resources, and urban renewal project reserve library in key areas of Tianjin, screening out the approved and implemented renewal projects, and constructing a resource library of renewal in key areas according to the categories of residential, industrial, facility, public space, and comprehensive urban renewal projects. For each renewal project, a theme library is constructed according to the thematic elements involved, and finally an urban renewal resource library of key areas by category and topic is obtained; monitoring and evaluation of renewal implementation: constructing a resource library of renewal implementation according to the constructed resource library of urban renewal in key areas by category and topic Post-implementation monitoring and evaluation indicator system, determine the subjective and objective weights of the monitoring and evaluation indicator system, obtain the comprehensive weight, and comprehensively evaluate the situation after the implementation of the renewal project based on the multi-factor comprehensive evaluation method; Implementation problem feedback: Based on the comprehensive evaluation of the situation after the implementation of the renewal project, use the Kmeans algorithm to determine the main factors affecting the effect of the renewal project after implementation, and feedback on the evaluation results to form a problem rectification list; Update project library modification: The dynamic renewal project implementation monitoring and evaluation feedback results and the renewal project implementation status will be fed back to the urban renewal resource library classified by category and topic in key areas, and the renewal project information will be modified, and the urban renewal resource library classified by category and topic in key areas will be dynamically updated and maintained.

[0006] A method for monitoring and evaluating the implementation of urban renewal in key areas, wherein the specific steps of monitoring and evaluating the implementation of renewal are:

[0007] Construct a monitoring and evaluation indicator system after the implementation of renewal: Based on the urban renewal resource library classified by category and topic in key areas, the OSM model is used to construct a monitoring and evaluation indicator system after the implementation of renewal projects for residential, industrial, facility, public space and comprehensive urban renewal projects that have been implemented;

[0008] Determine the weight of the monitoring and evaluation indicator system: Use a combination of subjective and objective methods to determine the weight of the monitoring and evaluation indicator system. ij , using a combination of subjective and objective methods to determine the comprehensive weight;

[0009] Comprehensive evaluation of the situation after the implementation of the update project: Based on the determined monitoring and evaluation indicator system and weights, a multi-factor comprehensive evaluation method is used to calculate the comprehensive score V of the monitoring and evaluation indicator system after the implementation of the update project. ij , the specific calculation formula is as follows:

[0010]

[0011]

[0012]

[0013] in is the comprehensive weight determined by the target layer, E is the target layer score, is the comprehensive weight determined by the criterion layer, E i is the criterion layer score, is the comprehensive weight determined at the scheme level, E ij Score the solution layer.

[0014] A method for monitoring and evaluating the implementation of urban renewal in key areas, wherein the specific steps of constructing a monitoring and evaluation indicator system for the implementation of renewal are:

[0015] Sorting out the thematic factors reflecting the effects after implementation: Based on the results of the residents' willingness to renovate and the implementation of the project, the shortest distance method in the system cluster analysis was used to determine the thematic factors that affect the effects after implementation. The calculation formula of the shortest distance method is:

[0016]

[0017]

[0018] Where: D ij Represents the minimum distance between two elements, (x i ,y i )、(x j ,y j ) represent the two-dimensional coordinates of elements i and j respectively, d ij Represents the distance between two features;

[0019] Construct the influencing factors of the evaluation theme elements: According to the determined theme elements reflecting the effects after implementation, determine the indicators reflecting the theme elements according to the correlation. Taking the residential environment and functions as an example, based on the factors affecting the residential environment and functions, use the knowledge map to screen the key influencing factors, and evaluate the influencing factors of the residential environment and functions according to the priority of residents' concerns;

[0020] Determine the monitoring and evaluation indicator system after the implementation of the renewal project: Construct a hierarchical structure model, determine the effect after the implementation of the renewal as the target layer, determine the theme elements reflecting the effect after implementation as the criterion layer, and determine the influencing factors of the constructed evaluation theme elements as the program layer. Finally, the monitoring and evaluation indicators after the implementation of the renewal project consisting of the target layer, criterion layer, and program layer are obtained, which are represented by E and E respectively. i 、E ij Represents, where i is the number of criterion layer indicators corresponding to the target layer, and j is the number of solution layer targets corresponding to the criterion layer.

[0021] A method for monitoring and evaluating the implementation of urban renewal in key areas, wherein the specific steps of determining the weights of the monitoring and evaluation indicator system are:

[0022] Determination of subjective weights: Based on the scores given by residents on the effects of the renewal project after implementation, the score proportion of each indicator is calculated to obtain the indicator scores with a unified dimension, and the indicator scores with a unified dimension are determined as subjective weights;

[0023] Determination of objective weights: Based on the updated post-project monitoring and evaluation indicator system, the objective weights of indicators are determined using principal component analysis;

[0024] Comprehensive weight determination: According to the determined subjective weight W i , objective weight W j Calculate the comprehensive weight W 综合 According to the principle that residents' satisfaction is more important after implementation, the variation coefficient method is used to obtain the subjective weight coefficient as a1 and the objective weight coefficient as a2. The calculation formula of the comprehensive weight is:

[0025] W 综合 =a1*W i +a2*W j Formula 6

[0026] A monitoring and evaluation method for post-implementation urban renewal in key areas, wherein the specific steps for determining the subjective weight are:

[0027] Residents score the effect after implementation: 5% of the total number of households within the scope of the renewal project are selected as a sample of residents. Using the survey and statistical method, the residents are organized to score the corresponding content of the monitoring and evaluation indicator system after the implementation of the renewal project. The target layer score is recorded as M i , the criterion layer index score is recorded as M ij , and record the solution-level indicator score as M ijk ; Where i is the number of samples drawn, j is the number of quasi-layer indicators corresponding to the target layer, and k is the number of scheme-layer indicators corresponding to the criterion layer;

[0028] Calculate the score proportion of each indicator: The total score of residents on the post-implementation monitoring and evaluation indicator system at the program level is recorded as L ij , calculate the proportion of each indicator score at the solution level in the total score at the solution level K ij , and its calculation formula is:

[0029] K ij =M ijk / L ij Formula 7

[0030] Among them, M ijk Scoring program-level indicators;

[0031] Determine the subjective weight: calculate K ijNormalization is performed and the normalized result is recorded as the subjective weight W of the monitoring and evaluation indicator system after the implementation of the updated project i , where the normalized calculation formula is as follows:

[0032] W i =(K ij -K min ) / (K max -K ij ) Formula 8

[0033] Among them, K min K ij The minimum value of K max K ij The maximum value of .

[0034] A monitoring and evaluation method for post-implementation urban renewal in key areas, wherein the specific steps for determining the objective weights are:

[0035] Standardization of the post-implementation monitoring and evaluation indicator system: Standardize the post-implementation monitoring and evaluation indicators to obtain indicators with a unified dimension. Indicators that are beneficial to the post-implementation effect are defined as positive indicators, and vice versa, as negative indicators. The calculation formula is as follows:

[0036]

[0037] Among them, X is the standardized result, X ij is the i-th data in the j-th indicator; MaxX j and MinX j are the maximum and minimum values ​​of the jth index respectively;

[0038] Calculate the covariance matrix: According to the standardized post-implementation monitoring and evaluation indicator system, calculate the covariance matrix. The calculation formula is as follows:

[0039]

[0040] where r ij (i,j=1,2,....p) is the original variable X i With X j The correlation coefficient, r ij =r ji , R is the covariance matrix.

[0041] Calculate eigenvalues ​​and eigenvectors: According to the covariance matrix, according to the characteristic equation |λI-R|=0, find the eigenvalue λ i ; Then find the corresponding eigenvalue λ according to the eigenvalue i The eigenvector e i (i=1,2...p), where:

[0042]

[0043] where e ij Represents the vector e i The jth component of

[0044] Calculate the principal component contribution rate and cumulative contribution rate: According to the calculated eigenvalues, calculate the contribution rate and cumulative contribution rate respectively according to the following formulas:

[0045]

[0046] where λ i is the eigenvalue, e i is the eigenvector corresponding to the eigenvalue;

[0047] Calculate the principal component load and the principal component score: According to the calculated principal component contribution rate and cumulative contribution rate, calculate the principal component load and the principal component score. The calculation formula is as follows:

[0048]

[0049]

[0050] Among them, l ij The principal component loadings, Z is the principal component scores;

[0051] Determine the objective weight: According to the calculated comprehensive score Z, normalize the comprehensive score coefficient to obtain the weight value W of each indicator j ;

[0052] W j =(Z ij -Z min ) / (Z max -Z ij ) Formula 16

[0053] Where Z ij is the calculated comprehensive score, Z min To calculate the minimum value of the comprehensive score, Z max The maximum value of the comprehensive score is calculated.

[0054] A method for monitoring and evaluating the implementation of urban renewal in key areas, wherein the specific steps of feedback on implementation issues are:

[0055] Determine the main factors that affect the effect of the renewal project after implementation: Based on the scheme-level scores, the Kmeans algorithm is used to analyze the main factors that affect the implementation effect of urban renewal projects in key areas;

[0056] Feedback on evaluation results: Based on the monitoring and evaluation results after the implementation of the renewal project, sort out the list of problems after the implementation of the renewal project to guide the targeted implementation of the urban renewal project.

[0057] A method for monitoring and evaluating the implementation of urban renewal in key areas, wherein the specific steps of determining the main factors affecting the effect of the renewal project after implementation are:

[0058] Determine the number of cluster centroids K selected: try to enter different K values, and draw the loss function corresponding to different K values ​​into a broken line. The inflection point of the broken line is the K value.

[0059] Calculate the distance between centroids: According to the determined k value, use the shortest distance method to calculate the distance between centroids, and assign them to the class of the nearest centroid. Recalculate the distance between the centroids of each class until the distance between centroids is the smallest.

[0060] Determine the main factors affecting the implementation effect of the renewal project: According to the clustering results, the program level indicator scores are statistically calculated, and the main factors affecting the implementation effect of the renewal project are determined in descending order.

[0061] A monitoring and evaluation method for post-implementation urban renewal in key areas, in which each renewal project is based on the subject elements involved, including land use, population, industry, public service facilities, transportation, and residents' renewal willingness; the subject factors affecting the post-implementation effect are determined, including living environment and functions, transportation convenience, public service facility service capacity, and social environment and management; the influencing factors for evaluating living environment and functions include community livability, building repairs, parking space planning and implementation, and community public open space environment.

[0062] It can be seen from this that:

[0063] The method in the embodiment of the present invention can be based on urban renewal project information, idle land and renewal resources, and urban renewal project reserve data. By constructing a targeted indicator system and evaluation model, it can conduct post-implementation monitoring and evaluation of urban renewal in key areas, comprehensively evaluate the post-implementation situation of urban renewal projects, and provide feedback on implementation problems. It can dynamically update and maintain urban renewal project information in key areas, thereby providing technical support for dynamically evaluating the implementation of urban renewal and targeted optimization and improvement. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] Figure 1 A schematic flow chart of a method for monitoring and evaluating the implementation of urban renewal in key areas provided in an embodiment of the present invention;

[0065] Figure 2 A schematic diagram of the update implementation monitoring and evaluation process in an embodiment of the present invention;

[0066] Figure 3 A schematic diagram of the steps of constructing and updating a monitoring and evaluation indicator system after implementation in an embodiment of the present invention;

[0067] Figure 4 This is a schematic diagram of the process of determining the weight of the monitoring and evaluation indicator system in an embodiment of the present invention;

[0068] Figure 5 Schematic diagram of the subjective weight determination process in an embodiment of the present invention;

[0069] Figure 6 Schematic diagram of the objective weight determination process in an embodiment of the present invention;

[0070] Figure 7 A schematic diagram of the process flow of implementing the problem feedback step in an embodiment of the present invention;

[0071] Figure 8 The figure is a flowchart of the steps for determining the main factors that affect the effect of the update project after implementation in an embodiment of the present invention. DETAILED DESCRIPTION

[0072] In order to enable those skilled in the art to better understand the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The exemplary embodiments and descriptions of the present invention are used to explain the present invention but are not intended to limit the present invention.

[0073] Embodiment 1:

[0074] Figure 1 A flow chart of the monitoring and evaluation method for post-implementation urban renewal in key areas provided in this embodiment is as follows: Figure 1As shown, a monitoring and evaluation method for post-implementation urban renewal in key areas is provided, and the method includes the following steps: constructing an urban renewal resource library for key areas by category and topic: sorting out the data of urban renewal projects, idle land and renewal resources, and urban renewal project reserve library in key areas of Tianjin, screening out the renewal projects that have been approved and implemented, and constructing a key area renewal resource library according to the categories of residential, industrial, facility, public space, and comprehensive urban renewal projects. For each renewal project, a theme library is constructed according to the thematic elements involved, and finally an urban renewal resource library for key areas by category and topic is obtained; monitoring and evaluation of renewal implementation: constructing a renewal resource library based on the constructed urban renewal resource library for key areas by category and topic. Post-implementation monitoring and evaluation indicator system, determine the subjective and objective weights of the monitoring and evaluation indicator system, obtain the comprehensive weight, and comprehensively evaluate the situation after the implementation of the renewal project based on the multi-factor comprehensive evaluation method; Implementation problem feedback: Based on the comprehensive evaluation of the situation after the implementation of the renewal project, use the Kmeans algorithm to determine the main factors affecting the effect of the renewal project after implementation, and feedback on the evaluation results to form a problem rectification list; Update project library modification: The dynamic renewal project implementation monitoring and evaluation feedback results and the renewal project implementation status will be fed back to the urban renewal resource library classified by category and topic in key areas, and the renewal project information will be modified, and the urban renewal resource library classified by category and topic in key areas will be dynamically updated and maintained.

[0075] like Figure 2 As shown, a method for monitoring and evaluating the implementation of urban renewal in key areas, wherein the specific steps of monitoring and evaluating the implementation of renewal are:

[0076] Construct a monitoring and evaluation indicator system after the implementation of renewal: Based on the urban renewal resource library classified by category and topic in key areas, the OSM model is used to construct a monitoring and evaluation indicator system after the implementation of renewal projects for residential, industrial, facility, public space and comprehensive urban renewal projects that have been implemented;

[0077] Determine the weight of the monitoring and evaluation indicator system: Use a combination of subjective and objective methods to determine the weight of the monitoring and evaluation indicator system. ij , where subjective and objective determine the weights;

[0078] Comprehensive evaluation of the situation after the implementation of the update project: Based on the determined monitoring and evaluation indicator system and weights, a multi-factor comprehensive evaluation method is used to calculate the comprehensive score V of the monitoring and evaluation indicator system after the implementation of the update project. ij , the specific calculation formula is as follows:

[0079]

[0080]

[0081]

[0082] in is the comprehensive weight determined by the target layer, E is the target layer score, is the comprehensive weight determined by the criterion layer, E i is the criterion layer score, is the comprehensive weight determined at the scheme level, E ij Score the solution layer.

[0083] like Figure 3 As shown, a method for monitoring and evaluating the implementation of urban renewal in key areas, wherein the specific steps of constructing a monitoring and evaluation indicator system for the implementation of renewal are:

[0084] Sorting out the thematic factors reflecting the effects after implementation: Based on the results of the residents' willingness to renovate and the implementation of the project, the shortest distance method in the system cluster analysis was used to determine the thematic factors that affect the effects after implementation. The calculation formula of the shortest distance method is:

[0085]

[0086]

[0087] Where: D ij Represents the minimum distance between two elements, (x i ,y i )、(x j ,y j ) represent the two-dimensional coordinates of elements i and j respectively, d ij Represents the distance between two features;

[0088] Construct the influencing factors of the evaluation theme elements: According to the determined theme elements reflecting the effects after implementation, determine the indicators reflecting the theme elements according to the correlation. Taking the residential environment and functions as an example, based on the factors affecting the residential environment and functions, use the knowledge map to screen the key influencing factors, and evaluate the influencing factors of the residential environment and functions according to the priority of residents' concerns;

[0089] Determine the monitoring and evaluation indicator system after the implementation of the renewal project: Construct a hierarchical structure model, determine the effect after the implementation of the renewal as the target layer, determine the theme elements reflecting the effect after implementation as the criterion layer, and determine the influencing factors of the constructed evaluation theme elements as the program layer. Finally, the monitoring and evaluation indicators after the implementation of the renewal project consisting of the target layer, criterion layer, and program layer are obtained, which are represented by E and E respectively. i 、E ij Represents, where i is the number of criterion layer indicators corresponding to the target layer, and j is the number of solution layer targets corresponding to the criterion layer.

[0090] like Figure 4As shown, a monitoring and evaluation method for post-implementation urban renewal in key areas is provided, wherein the specific steps for determining the weights of the monitoring and evaluation indicator system are as follows:

[0091] Determination of subjective weights: Based on the scores given by residents on the effects of the renewal project after implementation, the score proportion of each indicator is calculated to obtain the indicator scores with a unified dimension, and the indicator scores with a unified dimension are determined as subjective weights;

[0092] Determination of objective weights: Based on the updated post-project monitoring and evaluation indicator system, the objective weights of indicators are determined using principal component analysis;

[0093] Comprehensive weight determination: According to the determined subjective weight W i , objective weight W j Calculate the comprehensive weight W 综合 According to the principle that residents' satisfaction is more important after implementation, the variation coefficient method is used to obtain the subjective weight coefficient as a1 and the objective weight coefficient as a2. The calculation formula of the comprehensive weight is:

[0094] W 综合 =a1*W i +a2*W j Formula 6

[0095] like Figure 5 As shown, a monitoring and evaluation method for post-implementation urban renewal in key areas is provided, wherein the specific steps for determining the subjective weight are:

[0096] Residents score the effect after implementation: 5% of the total number of households within the scope of the renewal project are selected as a sample of residents. Using the survey and statistical method, the residents are organized to score the corresponding content of the monitoring and evaluation indicator system after the implementation of the renewal project. The target layer score is recorded as M i , the criterion layer index score is recorded as M ij , and record the solution-level indicator score as M ijk . Where i is the number of samples drawn, j is the number of indicators in the quasi-side layer corresponding to the target layer, and k is the number of indicators in the scheme layer corresponding to the criterion layer;

[0097] Calculate the score proportion of each indicator: The total score of residents on the post-implementation monitoring and evaluation indicator system at the program level is recorded as L ij , calculate the proportion of each indicator score at the solution level in the total score at the solution level K ij , and its calculation formula is:

[0098] K ij =M ijk / L ij Formula 7

[0099] Among them, M ijk Scoring program-level indicators;

[0100] Determine the subjective weight: calculate K ij Normalization is performed and the normalized result is recorded as the subjective weight W of the monitoring and evaluation indicator system after the implementation of the updated project i , where the normalized calculation formula is as follows:

[0101] W i =(K ij -K min ) / (K max -K ij ) Formula 8

[0102] Among them, K min K ij The minimum value of K max K ij The maximum value of .

[0103] like Figure 6 As shown, a monitoring and evaluation method for post-implementation urban renewal in key areas is provided, wherein the specific steps for determining the objective weights are:

[0104] Standardization of the post-implementation monitoring and evaluation indicator system: Standardize the post-implementation monitoring and evaluation indicators to obtain indicators with a unified dimension. Indicators that are beneficial to the post-implementation effect are defined as positive indicators, and vice versa, as negative indicators. The calculation formula is as follows:

[0105]

[0106] Among them, X is the standardized result, X ij is the i-th data in the j-th indicator; MaxX j and MinX j are the maximum and minimum values ​​of the jth index respectively;

[0107] Calculate the covariance matrix: According to the standardized post-implementation monitoring and evaluation indicator system, calculate the covariance matrix. The calculation formula is as follows:

[0108]

[0109] where r ij (i,j=1,2,....p) is the original variable X i With X j The correlation coefficient, r ij =r ji , R is the covariance matrix.

[0110] Calculate eigenvalues ​​and eigenvectors: According to the covariance matrix, according to the characteristic equation |λI-R|=0, find the eigenvalue λ i ; Then find the corresponding eigenvalue λ according to the eigenvaluei The eigenvector e i (i=1,2...p), where:

[0111]

[0112] where e ij Represents the vector e i The jth component of

[0113] Calculate the principal component contribution rate and cumulative contribution rate: According to the calculated eigenvalues, calculate the contribution rate and cumulative contribution rate respectively according to the following formulas:

[0114] Contribution rate:

[0115] Cumulative contribution rate:

[0116] where λ i is the eigenvalue, e i is the eigenvector corresponding to the eigenvalue;

[0117] Calculate the principal component load and the principal component score: According to the calculated principal component contribution rate and cumulative contribution rate, calculate the principal component load and the principal component score. The calculation formula is as follows:

[0118]

[0119]

[0120] Among them, l ij The principal component loadings, Z is the principal component scores;

[0121] Determine the objective weight: According to the calculated comprehensive score Z, normalize the comprehensive score coefficient to obtain the weight value W of each indicator j ;

[0122] W j =(Z ij -Z min ) / (Z max -Z ij ) Formula 16

[0123] Where Z ij is the calculated comprehensive score, Z min To calculate the minimum value of the comprehensive score, Z max The maximum value of the comprehensive score is calculated.

[0124] like Figure 7 As shown, a monitoring and evaluation method for post-implementation urban renewal in key areas is provided, wherein the specific steps of feedback on implementation issues are:

[0125] Determine the main factors that affect the effect of the renewal project after implementation: Based on the scheme-level scores, the Kmeans algorithm is used to analyze the main factors that affect the implementation effect of urban renewal projects in key areas;

[0126] Feedback on evaluation results: Based on the monitoring and evaluation results after the implementation of the renewal project, sort out the list of problems after the implementation of the renewal project to guide the targeted implementation of the urban renewal project.

[0127] like Figure 8 As shown, a monitoring and evaluation method for post-implementation urban renewal in key areas, wherein the specific steps of determining the main factors affecting the effect of the renewal project after implementation are:

[0128] Determine the number of cluster centroids K selected: try to enter different K values, and draw the loss function corresponding to different K values ​​into a broken line. The inflection point of the broken line is the K value.

[0129] Calculate the distance between centroids: According to the determined k value, use the shortest distance method to calculate the distance between centroids, and assign them to the class of the nearest centroid. Recalculate the distance between the centroids of each class until the distance between centroids is the smallest.

[0130] Determine the main factors affecting the implementation effect of the renewal project: According to the clustering results, the program level indicator scores are statistically calculated, and the main factors affecting the implementation effect of the renewal project are determined in descending order.

[0131] In the specific implementation cases: each renewal project involves thematic elements including land use, population, industry, public service facilities, transportation, and residents' willingness to renew; the thematic factors affecting the post-implementation effects are determined to include living environment and functions, transportation convenience, public service facility service capabilities, and social environment and management; the influencing factors for evaluating living environment and functions include community livability, building repairs, parking space planning and implementation, and community public open space environment.

[0132] The following is an example of a specific implementation:

[0133] Taking the urban renewal project in the key area A of Tianjin as an example, the specific implementation method of the present invention is described in detail below, including the following steps:

[0134] 1. Construct an urban renewal resource library for key areas by category and topic: Sort out the data of urban renewal projects, idle land and renewal resources, and urban renewal project reserves in Tianjin’s A key area, screen out the renewal projects that have been approved and implemented, and construct a key area renewal resource library according to the categories of residential and industrial urban renewal projects. For each renewal project, a theme library is constructed according to the thematic elements involved, land use, population, industry, public service facilities, transportation, and residents’ renewal intentions, and finally an urban renewal resource library for key areas by category and topic is obtained. The theme database of residential renewal projects includes data on population, housing construction, public service facilities, municipal infrastructure, road traffic, land use, administrative divisions, and residents' renewal willingness. The population topic includes data on population size, age structure, occupational composition, education level, and housing conditions; the housing construction topic includes data on housing structure, housing security, and housing disaster resistance; the public service facilities topic includes spatial data and attribute information on medical facilities, educational facilities, elderly care facilities, commercial service facilities, sports facilities, and sanitation facilities; municipal infrastructure includes water, electricity, roads, gas, heat, communications, parking and charging facilities, and the number and attribute information of barrier-free facilities; road traffic includes spatial data and attribute information on internal and external roads, bus stops, and rail stops in the area; land use topics include control red lines, land use types, and idle and inefficiently used land vector data; administrative division topics include complete residential community scope and street scope vector data; residents' renewal willingness topic includes residents' willingness questionnaire for complete community renewal and renovation and statistical results of residents' willingness for complete community renovation. The theme database of industrial renewal projects includes: industry type, industry scale, industry benefit, industry spatial layout, investment environment, land use type, and population thematic data, among which industry type includes spatial data and attribute data of primary industry, secondary industry, and tertiary industry; industry scale includes industry proportion, employment absorption rate, fixed asset scale coefficient, and profit-tax ratio data; industry benefit includes industry sales profit rate and industry added value rate data; industry spatial layout includes the number of industries, the number of industry types, industry agglomeration, the number of public service facilities within 1,500 meters around the industry, and the distance of the industry from the airport, railway station, and commercial center; investment environment indicators include investment scale, investment quality, investment speed, and investment benefit data; land use type includes control red line, land use type, and idle and inefficiently used land vector data; population themes include population size, age structure, occupational composition, education level, employment type, social security information, and employment information.

[0135] 2. Monitoring and evaluation of the implementation of renewal: Based on the urban renewal resource library constructed by categories and topics in key areas, a monitoring and evaluation indicator system for the implementation of renewal is constructed, and the subjective and objective weights of the monitoring and evaluation indicator system are determined to obtain a comprehensive weight. Based on the multi-factor comprehensive evaluation method, a comprehensive evaluation is conducted on the implementation of the renewal project, including:

[0136] Constructing a monitoring and evaluation index system after the implementation of renewal: According to the urban renewal resource library classified by category and topic in key area A, constructing an implementation monitoring and evaluation index system. Combined with the types of urban renewal projects and the implementation effects expected by residents, the target layer is the effect of the urban renewal projects of group A1, A2, A3, A4 and A5 in key area A after implementation; the criterion layer constructs a monitoring and evaluation index system after the implementation of renewal projects from four aspects: living environment and function, service capacity of public service facilities, community environment and management, and industrial activity; according to the criterion layer indicators, constructing a corresponding program layer indicator system, among which the program layer indicators for evaluating living environment and function include the proportion of activity land, the proportion of green land, the integrity of building facades, the completion rate of renovation facility projects, and the livability of the community; the program layer indicators for evaluating the service capacity of public service facilities include the completeness rate of sports facilities, the parking space supply rate, the coverage rate of educational facilities, and the coverage rate of medical facilities; the program layer indicators for evaluating community environment and management include public participation awareness, residents' satisfaction with renewal, and residents' support rate for the existing property management model; the program layer indicators for evaluating industrial activity include the number of industries, industrial benefits, industrial activity index, and industrial agglomeration.

[0137] Determine the weight of the monitoring and evaluation indicator system: A combination of subjective and objective methods are used to determine the comprehensive weights of the proportion of active land, the proportion of green land, the integrity of building facades, the completion rate of renovation facilities projects, and the community livability index at the plan level, which are 0.2, 0.3, 0.1, 0.2, and 0.2 respectively; the weights of the indicators of sports facilities completeness, parking space supply rate, educational facilities coverage rate, and medical facilities coverage rate at the plan level are 0.25, 0.25, 0.25, and 0.25 respectively; the weights of the indicators of public participation awareness, residents' satisfaction with renewal, and residents' satisfaction with existing properties at the plan level are 0.25, 0.25, 0.25, and 0.25 respectively. The comprehensive weights of the management model support rate are 0.3, 0.4, and 0.3 respectively; the comprehensive weights of the number of industries, industrial benefits, industrial activity index, and industrial agglomeration at the plan level are 0.2, 0.3, 0.3, and 0.2 respectively; the comprehensive weights of the living environment and functions, public service facilities service capabilities, community environment and management, and industrial activity indicators at the criterion level are 0.4, 0.3, 0.2, and 0.1 respectively; the comprehensive weights of the A1, A2, A3, A4, and A5 groups at the target level are 0.15, 0.35, 0.3, and 0.2 respectively.

[0138] Comprehensive evaluation of the renewal project after implementation: Taking the group as the evaluation unit, the multi-factor comprehensive evaluation method was adopted to evaluate the monitoring and evaluation effects of the urban renewal projects of each group after implementation. The comprehensive scores of groups 1 to 5 were 0.4, 0.7, 0.25, 0.45, and 0.56, respectively. It can be concluded that the second group had the highest score in monitoring and evaluation after implementation of the urban renewal project, and the effect after implementation was relatively the best. The effect of the third group after implementation was relatively poor.

[0139] 3. Feedback on implementation issues: Based on the comprehensive evaluation of the implementation of the renewal project, the Kmeans algorithm is used to determine the main factors affecting the implementation effect. The theme factors affecting the implementation effect in key areas A include residential environment and function, community environment and management. According to the determined theme elements reflecting the implementation effect, the indicators reflecting the theme elements are determined according to the correlation, and the knowledge graph is used to screen the key influencing factors. Among them, according to the priority, the main influencing factors affecting the residential environment and function are community livability and the completion rate of the renovation facility project. The main influencing factors affecting the community environment and management are residents' satisfaction with renewal and residents' support for the existing property management model. According to the monitoring and evaluation results and main influencing factors after the implementation of the renewal project, the list of problems after the implementation of the renewal project is sorted out, and the list of problems includes insufficient parking space planning, incomplete sports facilities, insufficient industrial activity, and low residents' satisfaction with property management, which guides the targeted implementation of urban renewal projects.

[0140] 4. Update project library modification: The obtained renewal project implementation monitoring and evaluation results and implementation problem feedback list will be updated to the urban renewal resource library of key areas by category and topic, and the renewal project information will be modified in combination with further improvement and enhancement of the implementation status of key area A, and the urban renewal resource library of key areas by category and topic will be dynamically updated and maintained.

[0141] The foregoing method descriptions and flow charts are provided only as illustrative examples and are not intended to require or imply that the above operations or steps of various aspects must be performed in the order given. As will be appreciated by those skilled in the art, the order of the boxes in the foregoing aspects may be performed in any order. Words such as "thereafter," "then," "next," and the like are not intended to limit the order of operations or steps; these words are only used to guide the reader through the description of the method. In addition, any singular reference to a claim element, for example, the use of the article "a," "an," or "the" is not to be construed as limiting the element to the singular.

[0142] The various illustrative logic blocks, modules, circuits, and algorithm steps described in conjunction with the aspects disclosed herein can all be implemented as electronic hardware, computer software, or a combination thereof. In order to clearly represent the interchangeability between hardware and software, the various illustrative components, blocks, modules, circuits, and steps are generally described above around their functions. Whether such functions are implemented as hardware or software depends on the specific application and the design constraints imposed on the entire method. A skilled person can implement the described functions in an alternative manner for each specific application, but such implementation decisions should not be interpreted as causing a departure from the scope of protection of the present invention.

[0143] The method in the embodiment of the present invention is based on urban renewal project information, idle land and renewal resources, and urban renewal project reserve data. By constructing a targeted indicator system and evaluation model, it conducts post-implementation monitoring and evaluation of urban renewal in key areas, comprehensively evaluates the post-implementation situation of urban renewal projects, and provides feedback on implementation issues. It dynamically updates and maintains urban renewal project information in key areas, providing technical support for dynamically evaluating the implementation of urban renewal and targeted optimization and improvement.

[0144] The foregoing description of the disclosed aspects is provided to enable any person skilled in the art to implement or use the present invention. Various modifications to these aspects will be apparent to those skilled in the art, and the general principles defined herein may also be applied to other embodiments without departing from the spirit and scope of the present invention. Therefore, the present invention is not intended to be limited to the aspects provided herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A monitoring and evaluation method for post-implementation urban renewal in key areas, characterized in that The method includes the following steps: constructing a resource library of urban renewal in key areas by category and topic: sorting out the data of urban renewal projects, idle land and renewal resources, and urban renewal project reserve library in key areas of Tianjin, screening out the approved and implemented renewal projects, and constructing a resource library of renewal in key areas according to the categories of residential, industrial, facility, public space, and comprehensive urban renewal projects. For each renewal project, a theme library is constructed according to the thematic elements involved, and finally an urban renewal resource library of key areas by category and topic is obtained; Monitoring and evaluation of update implementation: Based on the urban renewal resource library constructed by categories and topics in key areas, a monitoring and evaluation indicator system for post-implementation of update is constructed, the subjective and objective weights of the monitoring and evaluation indicator system are determined, and the comprehensive weight is obtained. According to the multi-factor comprehensive evaluation method, the situation after the implementation of the update project is comprehensively evaluated; Feedback on implementation problems: Based on the comprehensive evaluation of the situation after the implementation of the update project, the Kmeans algorithm is used to determine the main factors affecting the effect of the update project after implementation, and the evaluation results are fed back to form a list of problem rectification; Modification of update project library: The dynamic feedback results of the monitoring and evaluation of the implementation of the update project and the implementation status of the update project are fed back to the urban renewal resource library by categories and topics in key areas, and the update project information is modified, and the urban renewal resource library by categories and topics in key areas is dynamically updated and maintained.

2. A monitoring and evaluation method for post-implementation urban renewal in key areas according to claim 1, characterized in that: The specific steps for the updated implementation monitoring and evaluation are as follows: Construct a monitoring and evaluation indicator system after the implementation of renewal: Based on the urban renewal resource library classified by category and topic in key areas, the OSM model is used to construct a monitoring and evaluation indicator system after the implementation of renewal projects for residential, industrial, facility, public space and comprehensive urban renewal projects that have been implemented; Determine the weight of the monitoring and evaluation indicator system: Use a combination of subjective and objective methods to determine the weight of the monitoring and evaluation indicator system. ij , using a combination of subjective and objective methods to determine the comprehensive weight; Comprehensive evaluation of the situation after the implementation of the update project: Based on the determined monitoring and evaluation indicator system and weights, a multi-factor comprehensive evaluation method is used to calculate the comprehensive score V of the monitoring and evaluation indicator system after the implementation of the update project. ij , the specific calculation formula is as follows: E i = W Eij综合 *E ij Formula 3 in is the comprehensive weight determined by the target layer, E is the target layer score, is the comprehensive weight determined by the criterion layer, E i is the criterion layer score, W Eij综合 is the comprehensive weight determined at the scheme level, E ij Score the solution layer.

3. A monitoring and evaluation method for post-implementation urban renewal in key areas according to claim 2, characterized in that: The specific steps of constructing the monitoring and evaluation indicator system after the implementation of the update are: Sorting out the thematic factors reflecting the effects after implementation: Based on the results of the residents' willingness to renovate and the implementation of the project, the shortest distance method in the system cluster analysis was used to determine the thematic factors that affect the effects after implementation. The calculation formula of the shortest distance method is: Where: D ij Represents the minimum distance between two elements, (x i ,y i )、(x j ,y j ) represent the two-dimensional coordinates of elements i and j respectively, d ij Represents the distance between two features; Construct the influencing factors of the evaluation theme elements: According to the determined theme elements reflecting the effects after implementation, determine the indicators reflecting the theme elements according to the correlation. Taking the residential environment and functions as an example, based on the factors affecting the residential environment and functions, use the knowledge map to screen the key influencing factors, and evaluate the influencing factors of the residential environment and functions according to the priority of residents' concerns; Determine the monitoring and evaluation indicator system after the implementation of the renewal project: Construct a hierarchical structure model, determine the effect after the implementation of the renewal as the target layer, determine the theme elements reflecting the effect after implementation as the criterion layer, and determine the influencing factors of the constructed evaluation theme elements as the program layer. Finally, the monitoring and evaluation indicators after the implementation of the renewal project consisting of the target layer, criterion layer, and program layer are obtained, which are represented by E and E respectively. i 、E ij Represents, where i is the number of criterion layer indicators corresponding to the target layer, and j is the number of solution layer targets corresponding to the criterion layer.

4. A monitoring and evaluation method for post-implementation urban renewal in key areas according to claim 2, characterized in that: The specific steps for determining the weights of the monitoring and evaluation indicator system are as follows: Determination of subjective weights: Based on the scores given by residents on the effects of the renewal project after implementation, the score proportion of each indicator is calculated to obtain the indicator scores with a unified dimension, and the indicator scores with a unified dimension are determined as subjective weights; Determination of objective weights: Based on the updated post-project monitoring and evaluation indicator system, the objective weights of indicators are determined using principal component analysis; Comprehensive weight determination: According to the determined subjective weight W i , objective weight W j Calculate the comprehensive weight W 综合 According to the principle that residents' satisfaction is more important after implementation, the variation coefficient method is used to obtain the subjective weight coefficient as a1 and the objective weight coefficient as a2. The calculation formula of the comprehensive weight is: W 综合 =a1*W i +a2*W j Formula 6.

5. A method for monitoring and evaluating the implementation of urban renewal in key areas according to claim 4, characterized in that: The specific steps of determining the subjective weight are: Residents score the effect after implementation: 5% of the total number of households within the scope of the renewal project are selected as a sample of residents. Using the survey and statistical method, the residents are organized to score the corresponding content of the monitoring and evaluation indicator system after the implementation of the renewal project. The target layer score is recorded as M i , the criterion layer index score is recorded as M ij , and record the solution-level indicator score as M ijk ; Where i is the number of samples drawn, j is the number of quasi-layer indicators corresponding to the target layer, and k is the number of scheme-layer indicators corresponding to the criterion layer; Calculate the score proportion of each indicator: The total score of residents on the post-implementation monitoring and evaluation indicator system at the program level is recorded as L ij , calculate the proportion of each indicator score at the solution level in the total score at the solution level K ij , and its calculation formula is: K ij =M ijk / L ij Formula 7 Among them, M ijk Scoring program-level indicators; Determine the subjective weight: calculate K ij Normalization is performed and the normalized result is recorded as the subjective weight W of the monitoring and evaluation indicator system after the implementation of the updated project i , where the normalized calculation formula is as follows: W i =(K ij -K min ) / (K max -K ij ) Formula 8 Among them, K min K ij The minimum value of K max K ij The maximum value of .

6. A method for monitoring and evaluating the implementation of urban renewal in key areas according to claim 4, characterized in that: The specific steps of determining the objective weight are: Standardization of the post-implementation monitoring and evaluation indicator system: Standardize the post-implementation monitoring and evaluation indicators to obtain indicators with a unified dimension. Indicators that are beneficial to the post-implementation effect are defined as positive indicators, and vice versa, as negative indicators. The calculation formula is as follows: Among them, X is the standardized result, X ij is the i-th data in the j-th indicator; MaxX j and MinX j are the maximum and minimum values ​​of the jth index respectively; Calculate the covariance matrix: According to the standardized post-implementation monitoring and evaluation indicator system, calculate the covariance matrix. The calculation formula is as follows: where r ij (i,j=1,2,....p) is the original variable X i With X j The correlation coefficient, r ij =r ji , R is the covariance matrix. Calculate eigenvalues ​​and eigenvectors: According to the covariance matrix, according to the characteristic equation |λI-R|=0, find the eigenvalue λ i ; Then find the corresponding eigenvalue λ according to the eigenvalue i The eigenvector e i (i=1,2...p), where: where e ij Represents the vector e i The jth component of Calculate the principal component contribution rate and cumulative contribution rate: According to the calculated eigenvalues, calculate the contribution rate and cumulative contribution rate respectively according to the following formulas: Contribution rate: Cumulative contribution rate: where λ i is the eigenvalue, e i is the eigenvector corresponding to the eigenvalue; Calculate the principal component load and the principal component score: According to the calculated principal component contribution rate and cumulative contribution rate, calculate the principal component load and the principal component score. The calculation formula is as follows: Among them, l ij The principal component loadings, Z is the principal component scores; Determine the objective weight: According to the calculated comprehensive score Z, normalize the comprehensive score coefficient to obtain the weight value W of each indicator j ; W j = (Z ij - Z min ) / (Z max - Z ij ) Equation 16 Where Z ij is the calculated comprehensive score, Z min To calculate the minimum value of the comprehensive score, Z max The maximum value of the comprehensive score is calculated.

7. A method for monitoring and evaluating the implementation of urban renewal in key areas according to claim 1, characterized in that: The specific steps of implementing problem feedback are: Determine the main factors that affect the effect of the renewal project after implementation: Based on the scheme-level scores, the Kmeans algorithm is used to analyze the main factors that affect the implementation effect of urban renewal projects in key areas; Feedback on evaluation results: Based on the monitoring and evaluation results after the implementation of the renewal project, sort out the list of problems after the implementation of the renewal project to guide the targeted implementation of the urban renewal project.

8. A method for monitoring and evaluating the implementation of urban renewal in key areas according to claim 7, characterized in that: The specific steps of determining the main factors affecting the effect after the implementation of the renewal project are: Determine the number of cluster centroids K selected: try to enter different K values, and draw the loss function corresponding to different K values ​​into a broken line. The inflection point of the broken line is the K value. Calculate the distance between centroids: According to the determined K value, use the shortest distance method to calculate the distance between centroids, and assign them to the class of the nearest centroid. Recalculate the distance between the centroids of each class until the distance between centroids is the smallest. Determine the main factors affecting the implementation effect of the renewal project: According to the clustering results, the program level indicator scores are statistically calculated, and the main factors affecting the implementation effect of the renewal project are determined in descending order.

9. A method for monitoring and evaluating the implementation of urban renewal in key areas according to any one of claims 1 to 8, characterized in that: Each renewal project involves thematic elements including land use, population, industry, public service facilities, transportation, and residents' willingness to renew; the thematic factors affecting the effect after implementation are determined to include living environment and functions, transportation convenience, public service facility service capacity, social environment and management; and the influencing factors of living environment and functions are evaluated including community livability, building renovation, parking space planning and implementation, and community public open space environment.

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