| Summary: | 博士 === 國立交通大學 === 資訊科學系所 === 92 === Currently, the technologies of hardware and software about the Internet and information processing are developed in a very high pace. Applying these new technologies into the area of information retrieval is very successful. Because of the importance of information retrieval via the network, there are lots of prior studies dedicated in these related topics, and they have already got plenty of successful outcomes, but most of those researches always assume that the platforms by means of those technologies have good quality networks and high computing power CPU. For those poor quality networks, low computing power CPU, and resource-constrained mobile devices, obviously, most of the previous research outcomes usually can’t be easily adopted.
The objective of this dissertation is to study such resource-constrained mobile computing circumstances for information retrieval and related applications, and to propose a feasible framework to solve such situation. In this dissertation, we take care all situations that a mobile user may run into, and then propose a framework for the mobile devices with low-computing-power and poor-quality-networks to retrieval the information he is interested in from the network. In our design, a mobile user can retrieve the information from the network or the Internet via his/her networked mobile device. The mobile devices may include mobile phones, PDA, or mini-notebook PCs. Because the interface and operating model of those mobile devices are very diverse, to uniform the user interface among these devices, we utilize e-mail protocol and mobile agent technologies for the user to retrieve the information from the network or the Internet.
Because the e-mail is one of the most popular applications for all networked devices, and the e-mail protocol and e-mail client operation are common and uniform in those networked devices, the information retrieval operating interface will be unified. That is, the user may utilize the unified interface of our proposed framework to design, operate, and execute some mobile agents in the server-side, and those mobile agents will retrieve the information for the user in a very good computing environment. The user doesn’t need to worry about what kind of the mobile device he/she will use in the whole information retrieval process.
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