行動網格下基於本體論的資訊擷取代理人產生器

Ontology-Based Information Retrieval Agent Generator for Mobile Grid

駱宇承(Yu-Cheng Luo)

指導教授 ： 張玉山

國立臺北大學/電機資訊學院/通訊工程研究所/碩士(2008年)

摘要

由於無線通訊技術的發達，整合網格計算與無線網路顯得格外重要，而在行動網格環境中，萃取資訊或知識發現的議題也變得愈來愈重要，要將無線環境中所發佈的資訊實現智慧型推理和自動化處理並不容易，因此，本研究在目前語意網和智慧型代理人研究的基礎上，綜合了資訊檢索、知識表示、多重代理人等多方面的技術，在本篇論文提出並實現了一個基於知識本體 (Ontology) 並能夠實現語意資訊檢索的多代理人系統架構，它包括User Agent (UA)、Reasoning Agent (RA)、Mobile Information Retrieval Agent Generating Agent (MIRA-GA)、Information Service Agent (ISA) 及Knowledge-Synthesizing Agent (KSA)。利用代理人的特性來增加資訊擷取及知識發現的即時性與便利性，而利用行動裝置亦可解決機動性之不足。此外，行動代理人描述語言 (Mobile Agent Description Language, MADL) 是我們提出的一種新的描述語言，它主要是以XML來描述行動代理人的介面及行為，MIRA-GA可依據MADL的描述自動生成可執行於行動網格環境中的行動資訊擷取代理人 (Mobile Information Retrieval Agent, MIRA)，進而利用MIRA達成知識的發現。最後我們將以查詢熱門歌手為例，來驗證本系統在實務上的應用。

關鍵字

行動網格 ； 本體論 ； 資訊擷取 ； 行動代理人

並列摘要

Due to the accelerating development of wireless communication technology, the integration of grid computing and wireless networking has become increasingly important. The issue of information extraction and knowledge representation has also become prominent in the mobile grid environment. It is challenging, however, for published information to possess the ability of intelligent inference and automatic processing in a wireless environment. This research is therefore based on current knowledge about semantic web and intelligent agent, and it combines several technologies, including information retrieval, knowledge representation, and multi-agent.
In this thesis, we propose and implement an ontology-based, multi-agent system architecture that is capable of semantic information retrieval. The architecture includes UA, RA, GA, ISA, and KSA. The agents not only enhance the immediacy and convenience of information retrieval and knowledge discovery, but also improve the mobility of mobile devices. Moreover, we propose a new descriptive language, MADL, which predominantly uses XML to describe the interface and behavior of mobile agent. MIRA-GA can use the description of MADL to produce MIRA to execute in the mobile grid environment, thus to achieve knowledge discovery. This thesis ends with an example of searching popular singers to present a practical application of our proposed architecture.

並列關鍵字

Mobile Grid ； Ontology ； Information Retrieval ； Mobile Agent

參考文獻

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