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 Large Scale Real-time Ridesharing with Service Guarantee on Road Networks


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The mean occupancy rates of personal vehicle trips in the United States is only 1.6 persons per vehicle mile. Urban traffic gridlock is a familiar scene. Ridesharing has the potential to solve many environmental, congestion, and energy problems. In this paper, we introduce the problem of large scale real-time ridesharing with service guarantee on road networks. Servers and trip requests are dynamically matched while waiting time and service time constraints of trips are satisfied. We first propose two basic algorithms: a branch-and-bound algorithm and an integer programing algorithm. However, these algorithm structures do not adapt well to the dynamic nature of the ridesharing problem. Thus, we then propose a kinetic tree algorithm capable of better scheduling dynamic requests and adjusting routes on-the-fly. We perform experiments on a large real taxi dataset from Shanghai. The results show that the kinetic tree algorithm is faster than other algorithms in response time.



Autor: Yan Huang; Ruoming Jin; Favyen Bastani; Xiaoyang Sean Wang

Fuente: https://archive.org/



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