Information management method and system for engineering cost

Abstract

The present invention relates to the field of engineering cost technology, specifically to an information management method and system for engineering cost; the method comprises an information input unit, a database construction unit, a preset information correction unit and a real-time cost determination unit; the present invention can extract engineering cost evaluation factors from the corresponding period according to different cost periods of engineering costs of historical projects, calculate and obtain the basic weight of engineering cost and the weight of an expert group according to the obtained engineering cost evaluation factors, combine the two weights to obtain a weight threshold interval, so that the constructed engineering cost information management database is more reasonable and feasible for subsequent comparison of real-time engineering cost information, and in addition, the real-time engineering cost information, historical engineering cost information and preset engineering cost information are combined to realize double information verification, and when any comparison result is abnormal, an early warning is issued to ensure the reliability of the real-time engineering cost.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering cost, and in particular to an information management method and system oriented to engineering cost. Background Art

[0002] Cost management is an important activity based on overall interests, rational resource planning, and maximum investment benefits. It is not only an important measure to promote high-quality development of the construction industry, but also plays a supervisory role in the construction industry. Project cost has the characteristics of single-piece, complexity, and multiple times. Each project cost involves a large amount of measurement, pricing, and inquiry work. The large workload and high difficulty in coordination have always been the pain points and difficulties of project cost management. With the development of information technology, promoting the construction of cost management informatization is an effective measure to solve the pain points of traditional cost and is also an economic development trend.

[0003] In the patent document with application number "CN202111112821.0" and name "A method and system for managing information-based engineering cost", it is recorded that "it includes the following steps: Step S1, constructing a cost cycle prediction model based on the real data of the engineering cost of historical projects in the historical engineering cycle, and using the cost cycle prediction model to predict the predicted data of the engineering cost of the existing project in the future engineering cycle; Step S2, determining whether the planning data of the future engineering cycle is reasonable; Step S3, adjusting the unreasonable planning data of the future engineering cycle. The present invention can determine the rationality of the initial engineering cost planning, and complete the re-planning of unreasonable engineering costs, and finally realize the phased adjustment of the engineering cost according to the project progress, improve the accuracy and feasibility of the engineering cost, and provide enterprises with the best engineering cost management."

[0004] Although the management method and system provided by the above patent document have the advantages of using historical engineering information to predict future engineering cost information, it fails to combine real-time engineering cost information, historical engineering cost information and preset engineering cost information, which affects the accuracy of real-time engineering cost information and still needs further improvement. Based on this, the present invention provides an information management method and system for engineering cost to solve the above technical problems! Summary of the invention

[0005] The purpose of the present invention is to provide an information management method and system for engineering cost. The present invention combines the basic weight of engineering cost and the weight of the expert group to obtain the weight threshold interval, so that the constructed engineering cost information management database is more reasonable and feasible for subsequent comparison of real-time engineering cost information. In addition, the real-time engineering cost information, historical engineering cost information and preset engineering cost information are combined to achieve double information verification. When any comparison result is abnormal, an early warning will be issued to ensure the reliability of real-time engineering cost.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] The first aspect of the present invention provides an information management method for project cost, comprising the following steps:

[0008] S1. Based on the engineering cost information of historical projects, the engineering cost evaluation factors are extracted from the corresponding period, and the weight information of each engineering cost evaluation factor is calculated based on the extracted engineering cost evaluation factors, and the engineering cost evaluation factors in the corresponding period and the corresponding weight information are mapped one by one to build an engineering cost information management database;

[0009] S2. Retrieving weight threshold interval information of the engineering cost evaluation factor from the engineering cost information management database, comparing the weight threshold interval information with the preset engineering information, and correcting the preset engineering information;

[0010] S3. Obtain real-time information on the project cost in the project, retrieve the weight information of the corresponding project cost evaluation factor in the corresponding period, obtain the real-time project cost weight information, compare the weight threshold interval information in the project cost information management database with the real-time project cost weight information, obtain the first warning information, and compare the real-time project cost weight information with the preset project cost weight information for reliability to obtain the second warning information, and determine the real-time project cost information based on the first warning information and the second warning information.

[0011] Furthermore, in step S1, the process of extracting the engineering cost evaluation factor from the corresponding period is:

[0012] Extract the factors that affect the project cost from the project cost information;

[0013] Based on the extracted influencing factors, the expert group determines and screens to obtain the engineering cost evaluation factors.

[0014] Furthermore, in step S1, the process of calculating and obtaining the weight information of each engineering cost evaluation factor is as follows:

[0015] In the corresponding period, calculate the cost proportion of each engineering cost evaluation factor in the corresponding period to obtain the basic weight L;

[0016] Get the ranking sequence of the engineering cost evaluation factors of the i-th expert in the expert group , where a ni The impact is greater than a (n+m)i; Split the corresponding sorting sequence to obtain the corresponding sorting results in the sorting sequence of the i-th expert, and score all the pairwise sorting results in turn, and then add the scores of the M experts as the order relationship similarity score of the expert group, and determine the final sorting sequence of the engineering cost evaluation factor according to the order relationship similarity score;

[0017] The final project cost evaluation factor a is determined by the i-th expert ni Assign evaluation weight t ni , calculate the expert weight T=r1×t of the engineering cost evaluation factor corresponding to the i-th expert ni , where r1 is the weight coefficient of the ith expert, and then the final engineering cost evaluation factor a of the expert group is obtained. ni The average evaluation weight P;

[0018] Calculate and obtain the weight threshold interval Q of each engineering cost evaluation factor, that is, .

[0019] Furthermore, in step S2, the process of comparing the weight threshold interval information with the preset engineering information and correcting the preset engineering information is as follows:

[0020] Obtain the engineering cost evaluation factor corresponding to the corresponding period from the preset engineering information, and calculate and obtain the budget weight of the corresponding engineering cost evaluation factor;

[0021] The obtained budget weight information is compared with the weight threshold interval information. If the budget weight is within the weight threshold interval, the corresponding budget weight is not adjusted; otherwise, the corresponding budget weight information is adjusted.

[0022] Furthermore, in step S3, the reliability comparison process is:

[0023] According to the weights in the real-time engineering cost weight information and the weights in the preset engineering cost weight information, a judgment matrix is ​​constructed:

[0024] , where is the difference between the i-th weight in the real-time engineering cost and the j-th weight in the preset engineering cost weight;

[0025] Calculate the maximum eigenvalue of the judgment matrix , , where s is the order of the judgment matrix, n is the number of weights, W is the eigenvector of R, and w is the eigenvalue of the eigenvector W;

[0026] The reliability K is calculated. , and then compare the obtained reliability K with the preset threshold to obtain the comparison result.

[0027] Furthermore, in step S3, the process of determining the real-time engineering information according to the first warning information and the second warning information is as follows:

[0028] If the real-time engineering cost weight information is within the weight threshold area in the engineering cost information management database, the first warning information is not to generate a warning, otherwise a warning is generated;

[0029] If the reliability K is within the preset threshold, the second warning information is that no warning is generated, otherwise a warning is generated;

[0030] If neither the first warning information nor the second warning information generates a warning, no real-time engineering cost warning is generated; otherwise, a real-time engineering cost warning is generated.

[0031] The second aspect of the present invention: also provides an information management system for project cost, including an information input unit, a database construction unit and a preset information correction unit, wherein:

[0032] The information input unit is used to input the engineering cost information of historical projects, preset engineering information, real-time engineering cost information and expert group information;

[0033] The database construction unit extracts the engineering cost evaluation factors from the corresponding period based on the engineering cost information of the historical projects, and calculates and obtains the weight information of each engineering cost evaluation factor according to the extracted engineering cost evaluation factors, maps the engineering cost evaluation factors in the corresponding period and the corresponding weight information one by one, and constructs an engineering cost information management database, and the database construction unit is connected to the information input unit;

[0034] Among them, the process of extracting the engineering cost evaluation factor from the corresponding period is:

[0035] Extract the factors that affect the project cost from the project cost information;

[0036] Based on the extracted influencing factors, the expert group determines and screens to obtain the engineering cost evaluation factors.

[0037] In addition, the process of calculating and obtaining the weight information of each engineering cost evaluation factor is as follows:

[0038] In the corresponding period, calculate the cost proportion of each engineering cost evaluation factor in the corresponding period to obtain the basic weight L;

[0039] Get the ranking sequence of the engineering cost evaluation factors of the i-th expert in the expert group , where a ni The impact is greater than a (n+m)i; Split the corresponding sorting sequence to obtain the corresponding sorting results in the sorting sequence of the i-th expert, and score all the pairwise sorting results in turn, and then add the scores of the M experts as the order relationship similarity score of the expert group, and determine the final sorting sequence of the engineering cost evaluation factor according to the order relationship similarity score;

[0040] The final project cost evaluation factor a is determined by the i-th expert ni Assign evaluation weight t ni , calculate the expert weight T=r1×t of the engineering cost evaluation factor corresponding to the i-th expert ni , where r1 is the weight coefficient of the ith expert, and then the final engineering cost evaluation factor a of the expert group is obtained. ni The average evaluation weight P;

[0041] Calculate and obtain the weight threshold interval Q of each engineering cost evaluation factor, that is, .

[0042] The preset information correction unit retrieves the weight threshold interval information of the engineering cost evaluation factor from the engineering cost information management database, compares the weight threshold interval information with the preset engineering information, and corrects the preset engineering information. The preset information correction unit is connected to both the information input unit and the database construction unit.

[0043] Among them, the process of comparing the weight threshold interval information with the preset project information and correcting the preset project information is as follows:

[0044] Obtain the engineering cost evaluation factor corresponding to the corresponding period from the preset engineering information, and calculate and obtain the budget weight of the corresponding engineering cost evaluation factor;

[0045] The obtained budget weight information is compared with the weight threshold interval information. If the budget weight is within the weight threshold interval, the corresponding budget weight is not adjusted; otherwise, the corresponding budget weight information is adjusted.

[0046] Furthermore, it also includes a real-time cost determination unit, which is used to obtain real-time information on the project cost in the project, retrieve the weight information of the corresponding project cost evaluation factor in the corresponding period, obtain the real-time project cost weight information, compare the weight threshold interval information in the project cost information management database with the real-time project cost weight information, obtain the first warning information, and compare the real-time project cost weight information with the preset project cost weight information for reliability to obtain the second warning information, determine the real-time project cost information based on the first warning information and the second warning information, and the real-time cost determination unit is connected to the information entry unit, the database construction unit and the preset information correction unit.

[0047] The reliability comparison process is as follows:

[0048] According to the weights in the real-time engineering cost weight information and the weights in the preset engineering cost weight information, a judgment matrix is ​​constructed:

[0049] , where is the difference between the i-th weight in the real-time engineering cost and the j-th weight in the preset engineering cost weight;

[0050] Calculate the maximum eigenvalue of the judgment matrix , , where s is the order of the judgment matrix, n is the number of weights, W is the eigenvector of R, and w is the eigenvalue of the eigenvector W;

[0051] The reliability K is calculated. , and then compare the obtained reliability K with the preset threshold to obtain the comparison result.

[0052] In addition, according to the first warning information and the second warning information, the process of determining the real-time engineering information is as follows:

[0053] If the real-time engineering cost weight information is within the weight threshold area in the engineering cost information management database, the first warning information is not to generate a warning, otherwise a warning is generated;

[0054] If the reliability K is within the preset threshold, the second warning information is that no warning is generated, otherwise a warning is generated;

[0055] If neither the first warning information nor the second warning information generates a warning, no real-time engineering cost warning is generated; otherwise, a real-time engineering cost warning is generated.

[0056] Compared with the prior art, the present invention has the following beneficial effects:

[0057] The present invention can obtain the engineering cost information of historical projects. According to the different cost cycles of the engineering cost of historical projects, the engineering cost evaluation factor can be extracted from the corresponding cycle. According to the obtained engineering cost evaluation factor, the basic weight of the engineering cost and the weight of the expert group are calculated. The two weights are combined to obtain the weight threshold interval, which can avoid the single basic weight affecting the feasibility of the engineering cost. At the same time, the influence of the human factors of the expert weight is reduced, so that the constructed engineering cost information management database is more reasonable and feasible. In addition, the weight threshold interval information in the engineering cost information management database is compared with the real-time engineering cost weight information, so as to achieve the comparison of the real-time engineering cost information and ensure that the real-time engineering cost can be within the weight threshold interval information in the engineering cost information management database. At the same time, the real-time engineering cost weight information and the preset engineering cost weight information are compared for reliability, and the real-time engineering cost information, the historical engineering cost information and the preset engineering cost information are combined to achieve double information verification. In addition, when any comparison result is abnormal, an early warning will be issued to ensure the reliability of the real-time engineering cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] Figure 1 The present invention is a flowchart of the information management method for project cost.

[0059] Figure 2 This is a system diagram of the information management system for project cost according to the present invention.

[0060] Legend: 100, information input unit; 200, database construction unit; 300, preset information correction unit; 400, real-time cost determination unit. DETAILED DESCRIPTION

[0061] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example 1

[0062] like Figure 1 As shown, this embodiment provides an information management method for project cost, including the following steps:

[0063] S1. Based on the engineering cost information of historical projects, the engineering cost evaluation factors are extracted from the corresponding period, and the weight information of each engineering cost evaluation factor is calculated based on the extracted engineering cost evaluation factors. The engineering cost evaluation factors in the corresponding period and the corresponding weight information are mapped one by one to build an engineering cost information management database.

[0064] Among them, the process of calculating and obtaining the weight information of each engineering cost evaluation factor is:

[0065] In the corresponding period, calculate the cost proportion of each engineering cost evaluation factor in the corresponding period to obtain the basic weight L;

[0066] Get the ranking sequence of the engineering cost evaluation factors of the i-th expert in the expert group , where a ni The impact is greater than a (n+m)i ; Split the corresponding sorting sequence to obtain the corresponding sorting results in the sorting sequence of the i-th expert, and score all the pairwise sorting results in turn, and then add the scores of the M experts as the order relationship similarity score of the expert group, and determine the final sorting sequence of the engineering cost evaluation factor according to the order relationship similarity score;

[0067] The final project cost evaluation factor a is determined by the i-th expert ni Assign evaluation weight t ni , calculate the expert weight T=r1×t of the engineering cost evaluation factor corresponding to the i-th expert ni , where r1 is the weight coefficient of the ith expert, and then the final engineering cost evaluation factor a of the expert group is obtained. ni The average evaluation weight P;

[0068] Calculate and obtain the weight threshold interval Q of each engineering cost evaluation factor, that is, .

[0069] In this embodiment, it should be noted that the engineering cost information of historical projects will be obtained. According to the different cost cycles of the engineering costs of historical projects, the engineering cost evaluation factors can be extracted from the corresponding cycles. As a method of this embodiment, this example will obtain the basic weight of the engineering cost and the weight of the expert group, and combine the two weights to obtain the weight threshold range. This can avoid the invariance of a single basic weight that affects the feasibility of the engineering cost. At the same time, it reduces the influence of human factors on the expert weights, making the constructed engineering cost information management database more reasonable and feasible.

[0070] S2. Retrieve weight threshold interval information of the engineering cost evaluation factor from the engineering cost information management database, compare the weight threshold interval information with the preset engineering information, and correct the preset engineering information.

[0071] Among them, the process of comparing the weight threshold interval information with the preset project information and correcting the preset project information is as follows:

[0072] Obtain the engineering cost evaluation factor corresponding to the corresponding period from the preset engineering information, and calculate and obtain the budget weight of the corresponding engineering cost evaluation factor;

[0073] The obtained budget weight information is compared with the weight threshold interval information. If the budget weight is within the weight threshold interval, the corresponding budget weight is not adjusted; otherwise, the corresponding budget weight information is adjusted.

[0074] In this embodiment, it should be noted that the obtained preset project information will be compared with the weight threshold interval information in the engineering cost information management database to ensure that when the engineering information is preset, the preset engineering information can be monitored and corrected to ensure that the preset engineering information can achieve effective and reasonable management of the engineering information on the basis of meeting the engineering needs.

[0075] S3. Obtain real-time information on the project cost in the project, retrieve the weight information of the corresponding project cost evaluation factor in the corresponding period, obtain the real-time project cost weight information, compare the weight threshold interval information in the project cost information management database with the real-time project cost weight information, obtain the first warning information, and compare the real-time project cost weight information with the preset project cost weight information for reliability to obtain the second warning information, and determine the real-time project cost information based on the first warning information and the second warning information.

[0076] The reliability comparison process is as follows:

[0077] According to the weights in the real-time engineering cost weight information and the weights in the preset engineering cost weight information, a judgment matrix is ​​constructed:

[0078] , where is the difference between the i-th weight in the real-time engineering cost and the j-th weight in the preset engineering cost weight;

[0079] Calculate the maximum eigenvalue of the judgment matrix , , where s is the order of the judgment matrix, n is the number of weights, W is the eigenvector of R, and w is the eigenvalue of the eigenvector W;

[0080] The reliability K is calculated. , and then compare the obtained reliability K with the preset threshold to obtain the comparison result.

[0081] In addition, according to the first warning information and the second warning information, the process of determining the real-time engineering information is as follows:

[0082] If the real-time engineering cost weight information is within the weight threshold area in the engineering cost information management database, the first warning information is not to generate a warning, otherwise a warning is generated;

[0083] If the reliability K is within the preset threshold, the second warning information is that no warning is generated, otherwise a warning is generated;

[0084] If neither the first warning information nor the second warning information generates a warning, no real-time engineering cost warning is generated; otherwise, a real-time engineering cost warning is generated.

[0085] In this embodiment, it should be noted that the weight threshold interval information in the engineering cost information management database is compared with the real-time engineering cost weight information to obtain the first warning information, which can achieve the comparison of real-time engineering cost information and ensure that the real-time engineering cost is within the weight threshold interval information in the engineering cost information management database. At the same time, the real-time engineering cost weight information is compared with the preset engineering cost weight information for reliability to obtain the second warning information. Further, the real-time engineering cost is compared with the preset engineering cost information to ensure that the real-time engineering cost information can match the preset engineering cost information. In this embodiment, the real-time engineering cost information, the historical engineering cost information and the preset engineering cost information are combined to achieve double information verification. In addition, when any comparison result is abnormal, a warning will be issued to ensure the reliability of the real-time engineering cost. Example 2

[0086] like Figure 2 This embodiment also provides an information management system for project cost, including an information input unit 100, a database construction unit 200 and a preset information correction unit 300, wherein:

[0087] The information input unit 100 is used to input the engineering cost information of historical projects, preset engineering information, real-time engineering cost information and expert group information;

[0088] The database construction unit 200 extracts the engineering cost evaluation factors from the corresponding period based on the engineering cost information of the historical engineering, and calculates and obtains the weight information of each engineering cost evaluation factor according to the extracted engineering cost evaluation factors, maps the engineering cost evaluation factors in the corresponding period and the corresponding weight information one by one, and constructs an engineering cost information management database. The database construction unit 200 is connected to the information input unit 100;

[0089] Among them, the process of extracting the engineering cost evaluation factor from the corresponding period is:

[0090] Extract the factors that affect the project cost from the project cost information;

[0091] Based on the extracted influencing factors, the expert group determines and screens to obtain the engineering cost evaluation factors.

[0092] In addition, the process of calculating and obtaining the weight information of each engineering cost evaluation factor is as follows:

[0093] In the corresponding period, calculate the cost proportion of each engineering cost evaluation factor in the corresponding period to obtain the basic weight L;

[0094] Get the ranking sequence of the engineering cost evaluation factors of the i-th expert in the expert group , where a ni The impact is greater than a (n+m)i ; Split the corresponding sorting sequence to obtain the corresponding sorting results in the sorting sequence of the i-th expert, and score all the pairwise sorting results in turn, and then add the scores of the M experts as the order relationship similarity score of the expert group, and determine the final sorting sequence of the engineering cost evaluation factor according to the order relationship similarity score;

[0095] The final project cost evaluation factor a is determined by the i-th expert ni Assign evaluation weight t ni , calculate the expert weight T=r1×t of the engineering cost evaluation factor corresponding to the i-th expert ni , where r1 is the weight coefficient of the ith expert, and then the final engineering cost evaluation factor a of the expert group is obtained. ni The average evaluation weight P;

[0096] Calculate and obtain the weight threshold interval Q of each engineering cost evaluation factor, that is, .

[0097] The preset information correction unit 300 retrieves the weight threshold interval information of the engineering cost evaluation factor from the engineering cost information management database, compares the weight threshold interval information with the preset engineering information, and corrects the preset engineering information. The preset information correction unit 300 is connected to both the information input unit 100 and the database construction unit 200.

[0098] Among them, the process of comparing the weight threshold interval information with the preset project information and correcting the preset project information is as follows:

[0099] Obtain the engineering cost evaluation factor corresponding to the corresponding period from the preset engineering information, and calculate and obtain the budget weight of the corresponding engineering cost evaluation factor;

[0100] The obtained budget weight information is compared with the weight threshold interval information. If the budget weight is within the weight threshold interval, the corresponding budget weight is not adjusted; otherwise, the corresponding budget weight information is adjusted.

[0101] Furthermore, it also includes a real-time cost determination unit 400, which is used to obtain real-time information on the project cost in the project, retrieve the weight information of the corresponding project cost evaluation factor in the corresponding period, obtain the real-time project cost weight information, compare the weight threshold interval information in the project cost information management database with the real-time project cost weight information, obtain the first warning information, and compare the real-time project cost weight information with the preset project cost weight information for reliability to obtain the second warning information, determine the real-time project cost information based on the first warning information and the second warning information, and the real-time cost determination unit 400 is connected to the information entry unit 100, the database construction unit 200 and the preset information correction unit 300.

[0102] The reliability comparison process is as follows:

[0103] According to the weights in the real-time engineering cost weight information and the weights in the preset engineering cost weight information, a judgment matrix is ​​constructed:

[0104] , where is the difference between the i-th weight in the real-time engineering cost and the j-th weight in the preset engineering cost weight;

[0105] Calculate the maximum eigenvalue of the judgment matrix , , where s is the order of the judgment matrix, n is the number of weights, W is the eigenvector of R, and w is the eigenvalue of the eigenvector W;

[0106] The reliability K is calculated. , and then compare the obtained reliability K with the preset threshold to obtain the comparison result.

[0107] In addition, according to the first warning information and the second warning information, the process of determining the real-time engineering information is as follows:

[0108] If the real-time engineering cost weight information is within the weight threshold area in the engineering cost information management database, the first warning information is not to generate a warning, otherwise a warning is generated;

[0109] If the reliability K is within the preset threshold, the second warning information is that no warning is generated, otherwise a warning is generated;

[0110] If neither the first warning information nor the second warning information generates a warning, no real-time engineering cost warning is generated; otherwise, a real-time engineering cost warning is generated.

[0111] In this embodiment, it should be noted that the information input unit 100 is used to input the engineering cost information of historical projects, preset engineering information, real-time engineering cost information and expert group information, and transmits the engineering cost information of historical projects and the expert group information to the database construction unit 200. The database construction unit 200 extracts the engineering cost evaluation factors from the corresponding period based on the engineering cost information of the historical projects, and calculates and obtains the weight information of each engineering cost evaluation factor based on the extracted engineering cost evaluation factors, maps the engineering cost evaluation factors in the corresponding period and the corresponding weight information one by one, and constructs an engineering cost information management database. The information input unit 100 transmits the preset engineering information to the preset information correction unit 300, and the preset information correction unit 300 The weight threshold interval information of the engineering cost evaluation factor will be retrieved from the database construction unit 200, the weight threshold interval information will be compared with the preset engineering information, the preset engineering information will be corrected, and the corrected preset engineering information will be obtained. The information entry unit 100 will also transmit the real-time engineering cost information to the real-time cost determination unit 400. The real-time cost determination unit 400 will also retrieve information from the database construction unit 200. The real-time cost determination unit 400 will compare the weight threshold interval information in the engineering cost information management database with the real-time engineering cost weight information to obtain the first warning information, and compare the real-time engineering cost weight information with the preset engineering cost weight information for reliability to obtain the second warning information. According to the first warning information and the second warning information, the real-time engineering cost information is determined.

[0112] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0113] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. The information management method for engineering cost is characterized by: The following steps are involved: S1. Based on the engineering cost information of historical projects, the engineering cost evaluation factors are extracted from the corresponding period, and the weight information of each engineering cost evaluation factor is calculated based on the extracted engineering cost evaluation factors, and the engineering cost evaluation factors in the corresponding period and the corresponding weight information are mapped one by one to build an engineering cost information management database; The process of calculating and obtaining the weight information of each engineering cost evaluation factor is as follows: In the corresponding period, calculate the cost proportion of each engineering cost evaluation factor in the corresponding period to obtain the basic weight L; Get the ranking sequence of the engineering cost evaluation factors of the i-th expert in the expert group , where a ni The impact is greater than a (n+m)i ; Split the corresponding sorting sequence to obtain the corresponding sorting results in the sorting sequence of the i-th expert, and score all the pairwise sorting results in turn, and then add the scores of the M experts as the order relationship similarity score of the expert group, and determine the final sorting sequence of the engineering cost evaluation factor according to the order relationship similarity score; The final project cost evaluation factor a is determined by the i-th expert ni Assign evaluation weight t ni , calculate the expert weight T=r1×t of the engineering cost evaluation factor corresponding to the i-th expert ni , where r1 is the weight coefficient of the ith expert, and then the final engineering cost evaluation factor a of the expert group is obtained. ni The average evaluation weight P; Calculate and obtain the weight threshold interval Q of each engineering cost evaluation factor, that is, ; S2. Retrieving weight threshold interval information of the engineering cost evaluation factor from the engineering cost information management database, comparing the weight threshold interval information with the preset engineering information, and correcting the preset engineering information; S3, obtaining real-time information on the project cost in the project, retrieving the weight information of the corresponding project cost evaluation factor in the corresponding period, obtaining the real-time project cost weight information, comparing the weight threshold interval information in the project cost information management database with the real-time project cost weight information, obtaining the first warning information, and performing a reliability comparison between the real-time project cost weight information and the preset project cost weight information to obtain the second warning information, and determining the real-time project cost information according to the first warning information and the second warning information; The reliability comparison process is as follows: According to the weights in the real-time engineering cost weight information and the weights in the preset engineering cost weight information, a judgment matrix is ​​constructed: , where is the difference between the i-th weight in the real-time engineering cost and the j-th weight in the preset engineering cost weight; Calculate the maximum eigenvalue of the judgment matrix , , where s is the order of the judgment matrix, n is the number of weights, W is the eigenvector of R, and w is the eigenvalue of the eigenvector W; The reliability K is calculated. , and then compare the obtained reliability K with the preset threshold to obtain a comparison result; The process of determining the real-time project cost information according to the first warning information and the second warning information is as follows: If the real-time engineering cost weight information is within the weight threshold area in the engineering cost information management database, the first warning information is not to generate a warning, otherwise a warning is generated; If the reliability K is within the preset threshold, the second warning information is that no warning is generated, otherwise a warning is generated; If neither the first warning information nor the second warning information generates a warning, no real-time engineering cost warning is generated; otherwise, a real-time engineering cost warning is generated.

2. The information management method for construction cost according to claim 1 is characterized in that: In step S1, the process of extracting the engineering cost evaluation factor from the corresponding period is: Extract the factors that affect the project cost from the project cost information; Based on the extracted influencing factors, the expert group determines and screens to obtain the engineering cost evaluation factors.

3. The information management method for construction cost according to claim 1 is characterized in that: In step S2, the process of comparing the weight threshold interval information with the preset engineering information and correcting the preset engineering information is as follows: Obtain the engineering cost evaluation factor corresponding to the corresponding period from the preset engineering information, and calculate and obtain the budget weight of the corresponding engineering cost evaluation factor; The obtained budget weight information is compared with the weight threshold interval information. If the budget weight is within the weight threshold interval, the corresponding budget weight is not adjusted; otherwise, the corresponding budget weight information is adjusted.

4. An information management system for construction cost, using the information management method for construction cost as claimed in any one of claims 1 to 3, characterized in that: It comprises an information input unit (100), a database construction unit (200) and a preset information correction unit (300), wherein: The information input unit (100) is used to input historical engineering cost information, preset engineering information, real-time engineering cost information and expert group information; The database construction unit (200) extracts the engineering cost evaluation factors from the corresponding period based on the engineering cost information of the historical projects, and calculates and obtains the weight information of each engineering cost evaluation factor according to the extracted engineering cost evaluation factors, maps the engineering cost evaluation factors in the corresponding period and the corresponding weight information one by one, and constructs an engineering cost information management database. The database construction unit (200) is connected to the information input unit (100); The preset information correction unit (300) retrieves weight threshold interval information of the engineering cost evaluation factor from the engineering cost information management database, compares the weight threshold interval information with the preset engineering information, and corrects the preset engineering information. The preset information correction unit (300) is connected to both the information input unit (100) and the database construction unit (200).

5. The information management system for construction cost according to claim 4 is characterized in that: The system also includes a real-time cost determination unit (400), which is used to obtain real-time information on the project cost in the project, retrieve the weight information of the corresponding project cost evaluation factor in the corresponding period, obtain the real-time project cost weight information, compare the weight threshold interval information in the project cost information management database with the real-time project cost weight information, obtain first warning information, and compare the real-time project cost weight information with the preset project cost weight information for reliability, obtain second warning information, and determine the real-time project cost information based on the first warning information and the second warning information. The real-time cost determination unit (400) is connected to the information input unit (100), the database construction unit (200) and the preset information correction unit (300).

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