Analysis of Hub Location Decision in a Duopolistic Market

[[abstract]]軸幅式網路可以簡化飛航路網的航線數，且具有集貨功能可使航空公司降低營運成本而提升市場競爭力，因此在航空路網規劃中佔有相當重要的地位。以往飛航網路的研究大都探討市場僅存在一家航空公司的觀點進行網路規劃，然而實際上現今航空市場是少數幾家航空公司的寡占競爭市場，故本研究即以雙占競爭為基礎，考慮一個軸幅式航空網路，兩家競爭航空公司分為一間領導者，另一間為追隨者，進入市場具有先後順序關係，市場佔有率為根據票價與旅行時間為基礎的羅吉特函數，建立數學規劃模型，並根據其進入市場的先後順序關係，建立一套求解流程，決定兩家航空公司的轉運站位置與票價以及飛航路網配置，以求得各自獲得所能得到最大利潤。最後利用實際的兩岸航空客運資料對模式進行測試，以驗證模式之實用性與正確性。[[abstract]]This study addresses the competitive airline network design problem in a duopolistic market. Two airlines are assumed entering the market sequentially. The one who makes the first move is called leader and the other one is follower. The market share represented by a logit model is assumed to be affected by the prices and travel distances. A bi-level model is proposed to describe the behavior for the competitors. The upper level formulates the leader‘s decision, while the lower level represents the follower‘s problem. The bi-level is a mixed integer nonlinear problem. Due to the absence of effective solution algorithms, a heuristic solution procedure will be developed to solve the proposed model. Finally, the model will be tested by the air passenger data collected from Taiwan and Mainland China. A sensitivity analysis will be also tested to investigate the interactions between different parameters.[[note]]NSC98-2221-E327-02