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The on-line Vehicle Routing Problem (VRP), motivated by the research concerning on-line Traveling Salesman Problem (TSP) and on-line transportation problem, is studied in this paper. Unlike the TSP, in which the salesman has no capacity limitation, the vehicle in on-line VRP has a limited capacity. In the on-line VRP, when the capacity of the vehicle cannot satisfy the customers' request, it must...
At present, E-waste has become a considerable problem in China. Based on the multi-objective programming theory, this paper develops a fuzzy mathematic model for the location of treatment sites and transfer sites for e-wastes. Firstly, it proposes a two-phase fuzzy algorithm. Secondly, through solving the model, it conducts an analysis on the locations and numbers of these sites and how to assign...
Based on the k-taxi problem, the online taxi problem on benefit-cost graphs is proposed in this paper. The optimization of the problem is to maximize the benefit for finishing the whole request sequence under the condition that all requests are revealed with an online fashion. A relevant model is established and some concepts are formulated. After that, some online algorithms are designed and the...
In this paper, a distribution system consisting of a single manufacture and many geographically dispersed agents is studied. The manufacture distributes the trial-sale productions to many agents in an online fashion. Namely, without any information in the future, the manufacture will determine how many goods would be transported to the agents during every step. The goal is to minimize total transportation...
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