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Based WebHarvest the Chinese financial news search engine design and implementation

Author: SuiYuHang
Tutor: XueZhiDong
School: Huazhong University of Science and Technology
Course: Software Engineering
Keywords: Search Engine Web crawler Chinese word segmentation
CLC: TP311.52
Type: Master's thesis
Year: 2011
Downloads: 30
Quote: 0
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Abstract


With the rapid development of Internet , the amount of information it hosts exploding , therefore, how to effectively use these rich information resources has become a topic of concern researchers . In today's Internet search engines play a very important role in the field , which is the main tool for knowledge and information . Meanwhile, with the further expansion of user needs , access to more accurate and deep professional information , to become a new search engine requirements . The new changes in demand for the current , this paper presents a webharvet -based Chinese-language news search engine. First details of the search engine's system architecture, and then from the network reptiles, indexing engine , Web servers , and which relates to some of the algorithms described in detail. And on this basis , developed a webharvet -based Chinese-language news search engine. In short, the news search engine is based on the initial list to specify the URL of a Web page for page parsing , and to resolve to create indexed news credited to the database after the user access the web server on the client and on the index remove the corresponding database news and information . Apart from the common search engine-related components , the system design of a concurrent network reptiles, taking into account the performance requirements at the same time taking into account the accuracy of news data capture , and on this basis, add filters , text to go heavy, persistent and a series of components. In reptiles related components used to build a number of proven design patterns for the integration of the various modules and functions optimized. The index is partly based Lunece indexing by IKanalyzer for Chinese word segmentation and lexical analysis, and continuously updated data for the combined indexing and optimization. In addition, the combination of user needs, and permissions to add user ratings and other related operations , the main purpose is to develop a user-oriented experience good Chinese news search engine. In introducing the search engine sections, detailed description of the relevant technical point while building the system lists the relevant code and logic diagrams.

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