|
With the popularity of the Internet and the development of online information explosive growth. As of the end of 2009, the scale of Chinese Internet users reached 384 million, penetration rate reached 28.9%, the global number of sites has exceeded 200 million, number of pages, tens of billions. The impact of the Internet on people work, live further increase. User comments active reached an unprecedented level, whether domestic or international, major events, can be formed quickly online public opinion to express their views through the network, spread ideas. How to correctly grasp the dynamics of the network of public opinion, provide an accurate basis for scientific decision-making, is the core task of the Internet public opinion. In such a wealth of web resources, how to search public opinion information is a difficult thing. Specialized search engine development is the best way to solve this problem. Side of the vertical search engine for a specific area, a specific group of people or a particular need to provide a certain value of information and related services, the search feature is designed, refined, deep search results not with loitering information. Ordinary web search as the main features of an integrated search, horizontal search, both search accuracy and quality of the correlation is difficult to meet the large amount of information search, it is difficult to meet the pursuit of accurate personalized, professional search needs. In general, the vertical search engine for a professional search engine industry, search engine breakdown and extension. This paper describes the system structure and functional characteristics of vertical search engines, vertical search engine technology for the construction of public opinion patrol control system was demonstrated and improved, designed for vertical search engine Web crawler, in-depth analysis on Heritrix and Lucene has good practical network public opinion on the basis of a high-performance, high-load, reasonable, effective, standardized and practical system to achieve rapid monitoring of network public opinion. The system can quickly monitor network public opinion information network public opinion data and information is organized finishing, storage, processing, indexing, to facilitate the management of public opinion to complete the day-to-day work; same time, the system also supports a friendly and intuitive user interface, simple to operate, user-friendly . Systematization, standardization and automation of the overall design of the development goals of the public opinion, the system is added to the vertical search engine technology in the design of the public opinion, the system, the network public opinion management, to improve the overall level of management of the network of public opinion.
|