在目前網際網路的應用中，訊息仲介服務已經充份展現其實用性。如何建立一個在網際網路中運作的訊息撮合及通報系統且提供準確的訊息過濾機制，是一個重要的課題。

　　本文以研究如何運用發佈/訂閱之非同步通訊模型及XML技術來實現一個以內容為基礎之訊息撮合及通報系統，此系統為運作於網際網路中訊息的撮合、通報及傳遞之應用服務提供良好的解決方案。對資訊提供者而言，可以透過方便的介面輕易的提供資訊而不需要撰寫程式；對使用者而言，能夠準確的訂閱想要的訊息，並且方便的取得。研究中，一方面利用發佈/訂閱之非同步通訊模型及主動通報機制，建立訊息撮合及通報系統。另一方面引用XML格式標準、語意明確及可延伸性等特性來建構訊息的內容格式及準確的訊息過濾機制。

　　Event brokering service has demonstrated its usefulness in Internet. How to construct an event brokering system which operates on Internet and provides accurate filtering mechanism is an important challenge.

　　In this thesis, we investigate how to apply publish/subscribe asynchronous communication model and XML technology to construct a content-based event brokering system. The system provides a good solution to event matching, notification and transmission services that can operate on Internet. With the system, the information providers can provide information easily without programming via a convenient user interface, and end users can subscribe objects of interest accurately and get them conveniently. We take advantages of the publish/subscribe communication model and push technology to construct the event brokering system. Furthermore, we make use of XML’s features such as standardization, explicit meaning and extensibility to structure contents and to get accurate matching.

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