題名:  A heuristic algorithm for solving the discrete network design problem 
作者:  Chang, Chiajuch;Chang, Shenghsiung 
貢獻者:  淡江大學運輸管理學系 
關鍵詞:  Network design;investment decision model;heuristic algorithm 
日期:  199301 
上傳時間:  20130607 10:35:57 (UTC+8) 
出版者:  Abingdon: Taylor & Francis Ltd. 
摘要:  Transportation investment is a difficult decision, especially in developing countries where numerous improvements are needed but only limited resources are available. Although many studies have suggested that the network design approach be used to solve the investment decision problem, yet the problem solving algorithms previously developed are still not sufficient to provide optimal solutions with reasonable computing cost, especially when working with large networks. In this paper we suggest a new heuristic algorithm which can be used by general planners to deal with medium and large network design problems. This algorithm is based on the concept of expected generalized travel cost, and is developed by incorporating the Poorzahedy's modified model (a previous study) in an iterative optimization‐assignment procedure. A small network which was used in other studies is chosen to test the efficiency and effectiveness of the algorithm. In addition, a real highway network with 305 links and 135 candidate additions/alternative improvements has also been applied, and the computational efficiency is presented. All the computing work was executed by using simple commercial packages with a PC‐386 machine. The results conclude that their heuristic algorithm is very effective and is much more efficient than those developed in previous studies. An extended applicability of this algorithm for solving the network design problem with variable travel demand is also discussed. 
關聯:  Transportation Planning and Technology 17(1), pp.3950 
DOI:  10.1080/03081069308717498 
顯示於類別:  [運輸管理學系暨研究所] 期刊論文
