Research On Some Key Techniques Of Content Acquisition For Network Media

In order to maintain a good public opinion on Internet, information should be safely controlled. The security and management of Internet information content should focus on obtaining information released by important network media, that is, to gather information posted on Internet.Under the support of Shanghai Science and Technology Committee's project, "The Technique of Internet Media Information Security and Management & Control Engine", author of this thesis involved in the development of the information retrieval module for the cyberspace public opinion management and control platform. Related to some key techniques of content acquisition for Internet media, this thesis proposes some projects to improve the system performance of current Internet media content acquisition system, and enhance the performance of the retrieval module.Firstly, this thesis reviews the techniques and theories of Internet media content acquisition, and enumerates related theories and techniques such as content negotiation, status identification and Web information acquisition. After reviewing these techniques and theories, the thesis goes deep into content negotiation mechanism for Internet. Through analysis, the method of adopting content negotiation mechanism in content acquisition system of current Internet media is given.Under the above theories and by adding authentication module, this thesis proposes the information acquisition scenario for authentication website based on Cookie. Hence, the shortcomings of current authentication website's information acquisition system are solved.In order to resolve the problem that current information retrieval platform can not retrieve web page through identity authentication, this thesis proposes the project "Web Page Retrieval Based on Identity Authentication". Under the research of the identity authentication negotiation, one of the network negotiation techniques, the thesis adds the intellectualized identity authentication model to the original information retrieval platform to realize the project.Then, this thesis studies current popular Meta Search based on content negotiation mechanism and solves the problem of classical Search Engine's high query accuracy in single scope and query precision imbalance in mass scope.Based on the related techniques of content negotiation, this thesis proposes the above projects. They mend the shortcomings of acquisition scope of content acquisition techniques for existing network media more and more narrow, making the platform adapt to the development of the internet excellently, enhance the performance, and improve the efficiency of management and control.