An Autonomous And Distributed System On Information Collecting And Retrieval

The development of the science and technology in the field of communication and Internet provides more convenient access to the acquisition and utility of information and produces potential influence on our living style and the world gradually.Normally, one tends to feel helpless at the huge amount of information. Thus, it is prompted to seek a method by which we can get the right information conveniently and instantly. Presently, such expectation is realized to a certain degree by searching engine, one of the most important Web applications.However, searching engine built on centralized system structure displays some defects in robustness and expansibility, leading to discontinuous system services and high maintenance cost. Moreover, when the Internet goes into Web2.0, which is characteristic of'individuation'and'interaction', insufficiency on capability was disclosed within searching engine itself.To solve afore mentioned problems, a distributed system service architecture for information collection and retrieval, based on searching engine technology is established. Firstly, this system monitors particular information sources in real time, detects and downloads the newly-released one as soon as possible and makes index for information retrieve services. Secondly, this system is so well distributed and interacted that it bears excellent robustness and...