Results 81 to 90 of about 114,653,411 (178)

Dial-a-Ride [PDF]

open access: yes, 2003
The Dial-a-Ride problem is a Vehicle Routing problem in its most general form. The problem was formulated in the beginning of the 1970's and since then a large number of researchers have worked on developing efficient algorithms for use in automated ...
Jørgensen, Rene Munk
core  

The Online Dial-a-Ride Problem under Reasonable Load

open access: yes, 1999
In this paper, we analyze algorithms for the online dial-a-ride problem with request sets that fulfill a certain worst-case restriction: roughly speaking, a set of requests for the online dial-a-ride problem is reasonable if the requests that come up in ...
Krumke, Sven   +2 more
core   +1 more source

Solving the dynamic dial-a-ride problem : case study of fukang buses

open access: yes, 2013
碩士復康巴士乃針對身心障礙者而設立之及門服務運輸系統;此類服務亦稱之為撥召運輸系統。復康巴士營運至今,規模漸大,而車輛利用率始終偏低。本研究之目的即在於改善現有派車與路徑規劃方式以提升車輛之利用率;由於考量動態需求,因而形成一個動態撥召問題,也增加了求解的複雜性。   本研究以0-1整數規劃建模,並以先分群後規劃路徑策略分解原來問題。這樣的策略形成兩階段的求解過程:在第一階段以掃描法分配需求點至各鄰近車輛,第二階段則以最佳化軟體求解各車輛之路徑規劃。藉由多種分群組合的方式反覆找出較佳的解答 ...
蔡孟儒; Tsai, Meng-Ru
core  

Dynamic programming based metaheuristics for the dial-a-ride problem

open access: yes, 2016
International audienceThe organization of a specialized transportation system to perform transports for elderly and handicapped people is usually modeled as dial-a-ride problem.
Puchinger, Jakob   +2 more
core   +1 more source

Space-time clustering-based method to optimize shareability in real-time ride-sharing. [PDF]

open access: yesPLoS One, 2022
Alisoltani N   +3 more
europepmc   +1 more source

Online multi-server dial-a-ride problems [PDF]

open access: yes, 2006
. In an online dial-a-ride problem, a crew of servers has to process transportation requests as they arrive in real time. Possible ob-jective functions include minimizing the makespan and minimizing the sum of completion times.
Bonifaci, V., Lipmann, M., Stougie, L.
openaire   +4 more sources

An Asymmetric Multiple Traveling Salesman Problem with Backhauls to solve a Dial-a-Ride problem

open access: yes, 2015
Publisher Copyright: © 2015 IEEE.Nowadays, public transportation has become an essential area for the actual society, which directly affects the quality of life. There are different sort of public transportation systems.
E. Onieva   +11 more
core   +1 more source

Online multi-server dial-a-ride problems Online multi-server dial-a-ride problems

open access: yes, 2020
. In an online dial-a-ride problem, a crew of servers has to process transportation requests as they arrive in real time. Possible objective functions include minimizing the makespan and minimizing the sum of completion times.
Leen Stougie   +2 more
core  

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