Design And Implementation Of Network Public Opinion Monitoring System For The Ministry Of Public Security Based On WEB Data Mining Technology

The Internet bring people convenience, wealth and benefits, but also bring the aspects of reactionary, yellow and network crime. The dark side is slowly eroding the weak willed and motivated people. If analyzed based on nature and technology, the internet belongs to a completely open information environment, all of the network users can be the source of information and all of Internet users are able to select the information. It is precisely because of these characteristics of the Internet platform, many problems have been caused. The public security organs are the maintenance of social stability function management department. How to use the coping mode of operation of police information network platform for effective and timely has become the focus of much needed attention. That can ensure the scientific decision-making of the public security organs and is most important to improve the working efficiency of the public security organs.The main work of this paper can be summarized as follows:1. The paper has firstly analyzed the research background and significance of network public opinion monitoring system, expounded the research status at home and abroad for network public opinion and the feasibility analysis.2. The paper has analyzed the characteristics of public opinion, key areas and the main difficulties, and has elaborated the key technology of system, involves: web crawler technology, the technology of information filtering, segmentation technique and Web information mining technology.3. This paper has briefly technology designed the demand analysis and other aspects of public security public opinion monitoring system, and has designed the three major functions of the system in detail. The three functions are indicated the following. ①Comprehensive collection of public opinion information. The system can collect all kinds of public information in the Internet, traversal within the specified range of Web space(Webpage or web site), and put public information store the collected to information retrieval in the database, pending further excavation and analysis of public opinion information. ② Monitoring public opinion information. The system can crawls Webpage URL address, URL address and will crawl into systematic analysis, filtering, storage, indexing, and convenient and fast query and localization of the follow-up, the analysis results of this series of the process of income to will provide feedback and a guiding role information on the capture process and subsequent, according to the efficient search strategy, with the help of the web crawler technology from the message queue. ③ The early warning of Public opinion information. The system adopts the technology of Chinese segmentation, network public opinion information mining, mining association between objects in a large amount of information in the sample, and has the purpose of extracting information, thus providing information effective characteristic parameters for early warning value.4. The paper has realized the various functions of public security public opinion monitoring system and has tested the system function and performance. The research of paper has showed that the public security public opinion monitoring system is practical, effective and security.In a word, network public opinion monitoring system has integrated the Internet search technology and intelligent information processing technology. Through the capture, classification, clustering, analysis, mining of the massive network information, the system can ensure that the public security organs can timely and accurate grasp of the network public opinion of social news or events; fully understand the trend of thought of people; form analysis report and monitoring of early warning, provide an effective basis to fully grasp the Internet public opinion for the public security organs.