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City center evaluation method based on mobile phone signaling

A mobile phone signaling, urban technology, applied in the direction of telephone communication, instruments, electrical components, etc., can solve the problems of urban center system identification and evaluation work constraints, poor spatial accuracy, etc.

Inactive Publication Date: 2017-09-22
TONGJI UNIV +3
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Problems solved by technology

Since the census data is based on a certain census unit, the spatial accuracy is poor, and only statistical units such as streets that may contain the center are identified
Therefore, the identification and evaluation of urban center systems are greatly constrained

Method used

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  • City center evaluation method based on mobile phone signaling
  • City center evaluation method based on mobile phone signaling
  • City center evaluation method based on mobile phone signaling

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Embodiment Construction

[0024] Such as figure 1 As shown, the city center evaluation method based on mobile phone signaling of the present invention includes three steps of preprocessing, identification and evaluation.

[0025] For the preprocessing of mobile phone signaling data, take the anonymous mobile phone signaling data of 14 days in two consecutive weeks in Shanghai as an example. Data processing draws on existing methods, including three steps: first, select the minimum distance between 0:00-6:00 on weekdays and other record points as the current day’s residence, and then select the weekday (10 days) residence Repeat distance and minimum method to identify stable place of residence (for users who have identified a large difference in place of residence over multiple days, they are considered to have no stable place of residence), and finally it is concluded that there are 7.52 million users with stable places of residence and work, accounting for the same year. 31% of. In the second step, ...

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Abstract

A city center evaluation method based on mobile phone signaling comprises three steps of pretreatment, recognition and evaluation. According to OD records, two kinds of city resident behaviors (one is commuting and the other one is life going out) are recognized, and commuting and life going out OD information serves as basis data for recognizing and evaluating two city centers; simple linear regression is adopted, as for a unit j around each target grid unit i in an R range, the distance Dij between the unit j and the unit i is calculated, the visit density value yj at the j is extracted, and univariate linear regression is carried out on the yj and the Dij. As for selection on a proper radius R, with a greedy algorithm as reference, a point which needs to be recognized as a center is determined in advance, searching of the radius R is expanded from a small radius step by step, one recognition result is generated in the case of one time of radius searching, and the best predetermined center recognition effect is selected from the results as the final recognition result.

Description

technical field [0001] The invention belongs to the field of city planning and design, in particular to a method for evaluating city centers based on mobile phone signaling. Background technique [0002] Assessing the urban center system as a whole is one of the key points in the study of urban spatial structure, and it is also one of the basic tasks of urban overall planning. Past studies generally use census statistics, such as population census data and economic census data. Since the census data is based on certain census units, the spatial accuracy is poor, and only statistical units such as streets that may contain centers are identified. Therefore, the identification and evaluation of urban center systems are greatly constrained. Contents of the invention [0003] The purpose of the present invention is to provide a method for evaluating city centers based on mobile phone signaling. [0004] A mobile phone signaling-based urban center evaluation method, including...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/26H04M1/725
CPCG06Q10/0639G06Q50/26H04M1/72403
Inventor 晏龙旭王德王灿谢栋灿钟炜菁
Owner TONGJI UNIV
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