With the development and wide spread of computer and Internet, men have entered the information epoch. The information resources have grown explosively. Thus, how to help internet users exactly find the information that they want becomes an important mission of the information retrieval. Considering that most of traditional information retrieval techniques are based on string
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With the rapid development of Internet, the number of sites and webpage on the Internet grows explosively. Facing the massive information, it is very difficult for users to discover real-time information by scanning web. The real-time monitoring of web information requires users to discover valuable information from enormous information pages, but users can only monitor
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With the development of e-commerce, number of goods on shopping site is increasing. Using search engines to search product is becoming more and more difficult. Therefore, how to influence the search results according to the user’s own characteristics, their interests and their preferences, according to the user’s information and commodity information, allowing users to quickly
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EMV, which is established conjunctly by Europay, MasterCard and Visa, is a standard defining functionality for payment system IC card, and its latest version is EMV2000 specification. The dissertation first does a brief introduction of EMV application specification. EMV standard adopts asymmetric cryptography of doing offline data authentication for IC Card, and it supports only
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Along with the amount of Web documents on Internet grows rapidly, we are facing a lot of new challenges in the research of Web search. A vast majority of queries to search engines are short and under-specified and users may have completely different intentions for the same query. Currently, most of the main Web search
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As the available information increases, the inability to process, assimilate and use such large amount of information becomes more and more apparent. The problems of “the overloading information” and “the confusing resources” cause people to feel helpless.Currently available web news retrieval systems face a number of problems in that web-based news retrieval requires the ability
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With the swift development and popularization of World-Wide Web, Internet has become the primary channel for spreading information. Then, Knowledge Community comes out, through which people can connect with each other and share knowledge conveniently.At the same time, we should attach importance to the reconstruction of the website in order to let such problem by
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The paper introduces the significance of the research, the status quo of personalized customization at domestic and international, and the main research contents. It gives the architecture of personalized columns customization based on the client, functional module, and the main techniques. It describes the development, the definition and the process of data mining.Combining with the
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As the main tool of information-obtaining in the Internet, search engine has been widely applied in all kinds of fields. Recent years, with more and more emergencies such as local war, terrorism, earth*****s, tsunami, snow disasters, fire disasters, infectious disease and serious accidents in coal safety production and electricity stable transportation, some crisis management, forewarn
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Electronic commerce has become popular with the rapid development of Internet.E-Commerce system has been accumulated a mass of access data, which is significantresource for the enterprise. Data Mining is devoted to data analysis and understanding,finding potential knowledge in the data. So a large number of useful potentialinformation can be taken out from the data which
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