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Situation Monitor System is a software system combining technologies of both search engine and web mining, which is utilized by companies to monitor and supervise the public opinions related to them. This system processes by automatically collecting of the info, filtering sensitive words, smart gathering and classifying info, detecting key words, focusing on hot topics, statistically analyzing data and etc. The practical value of applying this system lies in providing public opinion bulletins, special topics, analysis reports for the decision makers, therefore, who can monitor the status of the public opinions, make correct guidance and supply analysis basis.Situation Monitor System introduced in this thesis is based on the core of "Nutch"+"Solr" and is shown as B/S structure. It uses effective technical theory research,combines with the real market needs and professional development team in order to achieve the goal of situation monitor system.The writer will introduce the system function, value and system needs from technical side. The thesis includes Nutch, solr, spring, j Query, hadoop, Quartz, Open Flash Chart and HTML/RIA technology. Through the description of system structure,target and bound of structure, also the software design of use case view,development view, date view, to show the system design structure. Finally, though many method to describe the system view to present a achievement and situation of whole system.The system owns a complete situation monitor and decision process in system setting and information collection, smart analyze, information publish. Using effective information screen method to achieve the accurate, on time information collection feature. User can order custom setting, organization setting, right, information source, UI type, short note and analyze report. The system is also presented by the abundant and stand-out point. Compare to other situation system monitor in market, this system presented by the writer has an clear advantage.
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