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- Ue-Pyng Wen, Y. H. Yang
- Computers & OR
- 1990

Several algorithms have been developed to solve the two-level linear programming problem during the past years. In this paper, we will formulate the mixed integer two-level linear programming problem and develop both the exact and heuristic solution procedures based on the branch-and-Lund technique for solving the problem. Computational experience and… (More)

- Chi-Jen Lin, Ue-Pyng Wen
- Fuzzy Sets and Systems
- 2004

- Kuen-Ming Lan, Ue-Pyng Wen, Hsu-Shih Shih, E. Stanley Lee
- Appl. Math. Lett.
- 2007

A combined neural network and tabu search hybrid algorithm is proposed for solving the bilevel programming problem. To illustrate the approach, two numerical examples are solved and the results are compared with those in the literature. c © 2006 Elsevier Ltd. All rights reserved.

- Ue-Pyng Wen, Kuen-Ming Lan, Hsu-Shih Shih
- European Journal of Operational Research
- 2009

The Hopfield neural network (HNN) is one major neural network (NN) for solving optimization or mathematical programming (MP) problems. The major advantage of HNN is in its structure can be realized on an electronic circuit, possibly on a VLSI (very large-scale integration) circuit, for an on-line solver with a parallel-distributed process. The structure of… (More)

- Chi-Jen Lin, Ue-Pyng Wen
- European Journal of Operational Research
- 2003

- Yun-Chu Chen, Shu-Cherng Fang, Ue-Pyng Wen
- European Journal of Operational Research
- 2013

0377-2217/$ see front matter 2012 Elsevier B.V. A http://dx.doi.org/10.1016/j.ejor.2012.09.003 ⇑ Corresponding author. Tel.: +886 35742653; fax: E-mail address: upwen@ie.nthu.edu.tw (U.-P. Wen This study considers pricing policies in a supply chain with one manufacturer, who sells a product to an independent retailer and directly to consumers through an… (More)

- Ue-Pyng Wen, Wayne F. Bialas
- Computers & OR
- 1986

- Chyi-Bao Yang, Ue-Pyng Wen
- Computers & OR
- 2005

More and more multimedia applications rely on the ability of networks to provide multicast communications. Network survivability becomes a critical issue in network planning, design, and operation to reduce the impacts of failures in high-speed networks. A rapid and cost-e1ective restorable network must be planned to maintain network survivability and use… (More)

- Chi-Jen Lin, Ue-Pyng Wen
- APJOR
- 2007

- Chi-Jen Lin, Ue-Pyng Wen, Pei-Yi Lin
- Appl. Soft Comput.
- 2011

This paper concentrates on sensitivity analysis of the fuzzy assignment problem (FAP). Since most real environments are uncertain, the FAP is more realistic than the assignment problem in application. Owing to the high degeneracy of the FAP, as that of the assignment problem, traditional sensitivity analysis, called Type I sensitivity analysis, which… (More)