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Full-Text Articles in Operations Research, Systems Engineering and Industrial Engineering

A Service Choice Model For Optimizing Taxi Service Delivery, Shih-Fen Cheng, Xin Qu Sep 2009

A Service Choice Model For Optimizing Taxi Service Delivery, Shih-Fen Cheng, Xin Qu

Shih-Fen CHENG

Taxi service has undergone radical revamp in recent years. In particular, significant investments in communication system and GPS devices have improved quality of taxi services through better dispatches. In this paper, we propose to leverage on such infrastructure and build a service choice model that helps individual drivers in deciding whether to serve a specific taxi stand or not. We demonstrate the value of our model by applying it to a real-world scenario. We also highlight interesting new potential approaches that could significantly improve the quality of taxi services.


Bi-Criteria Single Facility Location Problem With Limited Distances, Ali Shahabi, Amin Vafadar Nikjoo, Mohammad Reza Kazemi Feb 2009

Bi-Criteria Single Facility Location Problem With Limited Distances, Ali Shahabi, Amin Vafadar Nikjoo, Mohammad Reza Kazemi

Amin Vafadarnikjoo

This paper deals with a bi-criteria model for locating single new facility on the plane where the effective service distance becomes a constant when the actual distance attains or exceeds a certain value. The criteria that are used in this bi-criteria model are minisum, that minimizes the sum of all the transportation costs and minimax, that minimizes the maximum distances from the new facility to the demand points. By using a mixed integer programming formulation, the model is transformed to an easier form, and then the technique of fuzzy programming has been applied to solve it. A numerical example is …