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Figure Nutch -based search engines love blog design and implementation

Author: ChenBiKun
Tutor: ZhangHuaiTao
School: Zhengzhou University
Course: Library science
Keywords: Lucene Nutch Search Engine Theme Search Engine LIS blog Blog
CLC: G250.73
Type: Master's thesis
Year: 2011
Downloads: 144
Quote: 0
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Abstract


With the rise of Web2.0 concepts and technologies, global Internet users to enjoy a rich variety of interactive information services, blog it is this interactive information services typical. In this background, the field of library and information science students, researchers, etc. have set up blog for information exchange. However, LIS blog dispersed, Bowen uneven quality status for the profession to use the inconvenience, although Google blog search, Baidu blog search and other topics related to search engine has solved some problems, but still can not meet the map intelligence community needs of users. This paper attempts to solve this problem is to build LIS blog search engines, in order to meet the needs of users LIS. This article first search engine-related technologies and LIS blog for analysis, followed by the introduction of the open source search engine Nutch Nutch developed based on LIS blog search engine design, re-design plan developed pursuant to the appropriate topic search engines, finally subject to the experimental method to evaluate the performance of search engines. The main contents of this chapter are as follows: an introduction. This chapter introduces the thesis topic background, significance of the topic, research status, using research methods and innovations. 2 search engine-related technologies and LIS blog analysis. This chapter analyzes the search engines, search engines operating principle theme, pointing out that the main difference between the two lies in information collection module and web content analysis module in two parts, the theme improved search engine web crawlers and web content module and analysis module adds theme thesaurus for information filtering. Second, from the blog site structure, blog page content, blog link structure between the three aspects LIS blog for analysis, to increase the comprehensive understanding of LIS blog. 3 Nutch Nutch introduction and operation of the system environment configuration and operation. This chapter first describes the open source search engine Nutch's basic situation and frame structure, Nutch have a preliminary understanding. Then configure Nutch system's operating environment and a detailed explanation of its operation process, the operating principle for Nutch and detailed structure further understanding. 4 Based on the LIS blog Nutch search engine design. This chapter based software engineering, first analyze the search engine system to achieve the goal, to solve problems and feasibility, and then through the use case diagrams (Use Case Diagram) and sequence diagrams (Sequence Diagram) on the system user needs to elaborate, and finally gives the overall system design and detailed design. Figure 5 Based on Nutch search engines love blog the core module. This chapter describes the detailed design of the three core modules to achieve. The first is the use of library and information science theory and practice of information retrieval on the theme resource discovery module to achieve, followed by analysis by software acquisition strategy reptiles module implementation and, finally, according to user needs for improved retrieval module. Six experimental test analysis and conclusion. This chapter begins by setting up a series of parameters and based on these parameters were six experimental test, then the test results are analyzed. Finally, the author summarizes the LIS blog search engine features and deficiencies, and to make future improvements are discussed.

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CLC: > Culture, science,education, sports > Information and knowledge dissemination > Library science,librarianship > Library science > Library automation,networking > Development and utilization of network resources
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