Public facility space reachability analysis method and apparatus taking user features into consideration

Abstract

The present invention relates to a method and device for analyzing the spatial accessibility of public facilities in consideration of user characteristics. For traffic travel mode, the research unit constrained only by the spatial location is further divided into groups of different characteristics, and then the accessibility values ​​of public facilities are calculated for different groups of characteristics, which is conducive to analyzing public facilities from more perspectives and deeper levels. Spatial accessibility of facilities. In the process of calculating the accessibility of different groups of people, the service range of the park or the spatial range of people visiting the park under different traffic modes are calculated and fitted by using the surveyed and statistical travel time of residents to the park, which avoids the empirical method to determine the space The subjectivity brought by the range, so as to obtain the evaluation of the spatial accessibility of public facilities that is closer to the reality, and describe the rationality of the spatial distribution of public facilities more accurately.

Description

technical field [0001] The invention relates to surveying and mapping science and technology, in particular to a space accessibility analysis method, in particular to a public facility space accessibility analysis method considering user characteristics. Background technique [0002] The rational allocation of public facilities is an important manifestation of social equity. The spatial location and distribution of public facilities affect the convenience and fairness of people in need to visit these public facilities. This convenience can be analyzed with the help of spatial accessibility analysis method. Spatial accessibility analysis methods include: proportional method, shortest distance method, potential method and other methods. Among them, the two-step mobile search method based on the potential method is the most commonly used. This method not only considers the proximity of the demand crowd and public facilities, but also introduces the interaction between the cro...

AI Technical Summary

Problems solved by technology

However, while this method simplifies calculations, it also introduces errors that are inconsistent with reality, including: (1) equating the needs or characteristics of the population of the smallest research unit, thinking that they have the same demand preference (degree) for certain public facilities, Ignoring their differences, a one-size-fits-all approach treats the population of the smallest research unit as a whole. It can only examine the comprehensive accessibility value of the smallest research unit to public facilities, and cannot describe the impact of different characteristics of the population in the research unit on public facilities. Accessibility situation, which reduces the resolution of the analysis results and the ability to describe the real situation

(2) This method adopts a unified mode of transportation for all groups of people, that is, it is assumed that all people have the same space to visit public facilities, but in reality, there are often more than one mode of transportation, and the effectiveness of each mode of transportation to overcome spatial barriers is limited. different, this practice of ignoring the impact of transportation modes on service thresholds or accessibility reduces the accuracy of public facility accessibility results

(3) The attenuation function and its parameters used in this method to describe the attenuation of public facility service capacity with distance are mostly subjective judgments based on experience and lack of support from objective data, resulting in a lack of convincing results

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