| Summary: | 碩士 === 逢甲大學 === 資訊工程學系 === 107 === The number of people who surf over the electronic commerce has reached to 1.6 billion. Many traditional commerce behaviors have been switched to the electronic platform. Among them, an E-auction mechanism has been considered as the most popular activity in E-commerce model. However, it relies on the assumption that a fully trusted third party is required to guarantee the system, which is hard to be implemented in the real world. In this study, we aim to design an ad hoc combinatorial double auction framework based on the blockchain technique. The properties of decentralization and non-tempering can be used to realize a fair transaction and enhance the flexibility without the third party. A participant can follow his/her willing to launch an auction play with the adoption of smart contract. Furthermore, the reputation mechanism has been introduced to confirm the reliability of the framework, in which the risk from malicious attackers can be effectively lowered down. In particular, an improved genetic algorithm is designed to figure out an optimal pairing solution within a reasonable period. Experimental results have demonstrated that the new framework can fulfill most of the transactions to benefit both seller and buyer no matter how many people and commodities have involved into the auction.
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