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A method for extracting time-space trajectories of public transport passengers

An extraction method, a technology of space-time trajectory, applied in data processing applications, instruments, calculations, etc., can solve the problems of extracting the alighting station, ignoring the dynamic changes of passenger individual travel characteristics, and being unable to extract, so as to achieve the effect of improving accuracy

Active Publication Date: 2019-08-20
SOUTH CHINA UNIV OF TECH
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AI Technical Summary

Problems solved by technology

There are two problems in this method: 1) For each passenger, it is difficult to judge the alighting station for the last boarding card record on a single travel day
2) The site attraction right method is used to extract the macroscopic passenger flow situation between site pairs, which cannot extract or even ignore the dynamic travel characteristics of individual passengers revealed by the full sample card swiping data
3) In the existing method, if the matching of the passenger's boarding site fails, other information cannot be used to extract the alighting site

Method used

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  • A method for extracting time-space trajectories of public transport passengers
  • A method for extracting time-space trajectories of public transport passengers

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Embodiment

[0033] A method for extracting time-space trajectories of public transport passengers, the steps of which are as follows: figure 1 shown, including the following steps:

[0034]The first step is to extract the ride records of each passenger in the passenger ride record data of the full sample, and sort them in chronological order. Wherein each piece of passenger ride record data includes: the passenger identification, the passenger identification adopts the IC card number identification; The vehicle identification, the vehicle identification includes the license plate number; the line identification of the vehicle; the passenger's alighting station; the alighting time, the alighting time includes the hour, minute and second of the date and time; geographic coordinate information.

[0035] The second step is to scan each travel date. If there are more than two ride records on the travel date, here, record the boarding stations of the two adjacent rides (kth and k+7th) records...

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Abstract

The invention discloses a method for extracting public transport passenger trip space-time tracks. Data resources of full-sample passenger bus-taking records and bus running records are fused; based on the continuous trip chain method, starting from similarity analysis of everyday bus station tracks of each passenger, similar trip days are extracted; a statistical sample space is constructed to mine passenger activity rules; by means of the Bayesian estimation method, getting-off stations of one-ticket bus passenger card-swiping bus-taking records are extracted more reasonably and accurately, and trip tracks of the passengers are reduced from missing information. According to the method, implicit passenger individual activity rules in full-sample card-swiping data can be fully utilized for reasonably deducing the card-swiping getting-off stations of the passengers, and follow-up public transit network section flow statistics and data mining are promoted.

Description

technical field [0001] The invention relates to the technical field of intelligent public transportation, in particular to a method for extracting time-space trajectories of public transportation passengers. Background technique [0002] In recent years, bus IC cards have been widely used, improving the boarding efficiency and payment convenience of card-holders. With the increase in the number of card-holders, the swiping records of bus IC cards have become a new way to obtain passenger flow information at low cost, and have attracted great attention from domestic and foreign bus researchers. [0003] At present, the more popular applications for card swiping records are: under one or more specified time scales, for a specific line, obtain the passenger flow of boarding, passenger flow of getting off, and OD passenger flow between stations; for For some designated lines, obtain the passenger transfer flow between its stations; for all lines in a specific area, obtain the b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F16/2458G06Q50/26
Inventor 翁小雄刘永鑫李莹呙娟姚树申
Owner SOUTH CHINA UNIV OF TECH
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