| Summary: | 碩士 === 中華大學 === 企業管理學系碩士班 === 98 === In the shipping market, shippers usually have individual preferences due to differences in interest, cognition, motivation, subjective perception, and corporate culture between ship operators and them. Ocean freight forwarders are intermediate between shippers and ship operators. In their choice of ship operators for shippers, service quality attributes are important evaluation criteria. Based on service quality attributes proposed by previous research, this study proposed 11 attributes for evaluation of ship operators.
Since Ant System (AS) was introduced by Dorigo in 1992, it has been extensively studied by many scholars. In recent years, it has also been successfully applied to many complicated optimization problems. This study applied AS to freight forwarders’ choice of ship operators for shippers. It assumed that each expert has preference for certain ship operators, and such preference could be viewed as visibility in the AS. Besides, pheromone was defined as the number of experts choosing each ship operator. The probability that a ship operator should be chosen could be estimated based on visibility and accumulation of pheromones.
This study considered two different models. One is the fixed preference model, in which expert opinions do not change over time, and the other is the variable preference model, in which expert preference varies with the learning curve. This study applied AS to a practical case involving choice of ship operators. Through analysis of experts’ choice by their preference for ship operators and ship operators’ service quality, this study expected to provide some reference to shipping operators.
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