Public traffic system space-time reachability modeling method of considering network connectivity time varying characteristics
A technology of network connectivity and public transport system, which is applied in the modeling field of the spatial and temporal accessibility of public transport system, can solve the problems of neglecting that the connectivity of public transport network changes with time, and cannot truly reflect the spatial and temporal accessibility of public transport system, etc. To achieve a more reasonable effect of the calculation results
Active Publication Date: 2016-06-15
HARBIN INST OF TECH
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The existing spatial-temporal accessibility modeling methods determine the connectivity status of bus stops based on the spatial relationship between bus lines and stops, ignoring the characteristics of bus network connectivity that changes over time. Therefore, the calculated potential route area Can not truly reflect the space-time accessibility of the bus system
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[0054] A method for modeling the spatio-temporal accessibility of public transport systems considering the time-varying characteristics of network connectivity, the method comprising the following steps:
[0055] (1) Modeling the topology structure of the bus network: taking each stop in the bus system (stops with different geographic locations but the same stop name) as a "vertex", for any pair of stops, if the stop If there is a bus line connecting two stations in a certain direction, then a "directed arc" is established between the stations (if there are multiple bus lines in the same direction between two stations, only one directed arc is established), forming A directed graph depicting the bus network topology;
[0056] (2) Define the connection state between the station pair: when the "starting station" of the station pair in a certain direction has a bus arriving for the first time every day, define the station pair to be in the connected state in this direction. When...
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The present invention relates to a public traffic system space-time reachability modeling method of considering network connectivity time varying characteristics, and relates to the technology field of modeling the public traffic system space-time reachability. According to the present invention, the influence of the arrival time and the departure time of the beginning and ending buses at the beginning and ending stations and the stations along the way of the bus routes of a public traffic system to the public traffic network connectivity is considered fully, the change of a network arc weight at different time periods during one day is utilized to reflect the change of the connected state between the adjacent stations, and a built time varying weighting directed graphical model of the public traffic network on the basis accords with the reality of the public traffic network better. According to the present invention, a potential path area algorithm designed on the basis of building the time varying weighting directed graphical model of the public traffic network takes the public traffic network connectivity modeling as a part of the public traffic system space-time reachability modeling, so that the potential path calculation of the bus trip individuals by utilizing the public traffic system to participate in the social activities accords with the reality better.
Description
technical field [0001] The invention relates to the technical field of modeling the time-space accessibility of a public transport system, in particular to the modeling technology of the time-space accessibility of a public transport system considering the time-varying characteristics of network connectivity. Background technique [0002] The spatio-temporal accessibility of the public transport system refers to the spatial range that a public transport traveler can reach by using the public transport system under the condition of a given time budget, travel destination and departure time from any station of the public transport system, reflecting the The spatial constraints of public transport travelers participating in social activities are usually measured by the area covered by the potential routes of public transport travelers (potential route area). The spatio-temporal accessibility modeling method of the public transport system refers to the calculation process of the...
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IPC IPC(8): G06Q10/04G06Q10/06G06Q50/30
CPCG06Q10/047G06Q10/06312G06Q50/30
Inventor 程绍武王成谢兵张琎
Owner HARBIN INST OF TECH
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