Design And Realization Of The Public Opinion Monitoring System

The electronic public opinions are some strong influence and coloring comments and views which focus on some of the hot spots in real life by the public spread through the Internet. They are mainly realized and strengthened through BBS forum, blogs, and news heel sticks and so on. Today, transmission information and interactive opinions are unprecedented swiftly. The expressions of the electronic public opinions are also increasingly diversification. The negative of the electronic public opinions which are guided not property will form a large threat to the public safety of society. For some government departments’ parts, how to strength monitoring timely and guide effectively of the electronic public opinion and how to resolve actively the crisis of the electronic public opinion have important practical significance to maintain social stability and stimulate national development. At the same time, the public opinion surveillance is public opinion survey and sampling, which is an important basis for decision-making by the government administrative departments or enterprises.This article is developed a public opinion monitoring system on the basis of in-depth study of full-text search. It main research Chinese word and full-text search engine based on Markov model. The main body of the system is development completed by the use of C language. This system is a easy to use and powerful public opinion surveillance system.The main work of this article includes the following aspects:1. It puts forward an overall framework which includes the data acquisition module, data indexing module, data analysis module and user application interface four parts based on fully analysis to the system. Four modules have relatively independent functions, unified and standard communication interfaces, Full and effective information transmission. They reduce to the minimum of degree of coupling between different modules. 2. It improve algorithm of simhash, and puts forward the key word order of algorithm of simhash. This algorithm improves the accuracy of the inquiry greatly, especially improves the passage of the duplicate checking effect greatly.3. It introduces in detail to understanding and application of technology of FreeICTCLAS and Xapian. It also designs a indexing and retrieval database. This system is developed and completed by using C language and a small amount of C#languageThe main functions of this system include collection and collation of the network information, indexing and retrieval of information, analysis and application of information. From the application level, it Main divides into public opinion hotspot, forewarning, focus, full tracking, fuzzy search and other functions.To sum up, this system is a public opinion surveillance system based on the basis of full text retrieval and full analysis network public opinion monitoring demand.