Why do we need the Semantic Web?

According to recent reports, the world sites on the Internet has more than 100 million, the Internet has become the largest building in human history database, which involves almost all the known areas. Internet use is now written in HTML page as a data carrier, which intertwined through a hyperlink, so people can easily access the data. HTML language is one of the technologies supporting the Internet, which the prosperity of the Internet has played an indelible role. Undeniably, HTML language has its inherent flaws - as a performance-oriented markup language, it only defines the tags used to format the data set, and the lack of clearly marking the meaning of data. This resulted in the HTML page, the data in the form of its blend together, the computer only to understand how to display a page, but it does not really "understand" the information on this page. Therefore, a number of Internet-based applications such as e-commerce, intelligent information retrieval, intelligent agents, has not really intelligent and automated. Internet researchers, has been trying to solve the problem. So far, the search engine technology is the most successful attempt. Search engine technology to natural language processing (Natural Language Processing, NLP) based in the related areas of the large amount of theoretical research and practical application, but still faces great difficulties, the information query precision and recall is difficult to further. Now the search engine, mostly through keyword search, to find the information you need, it would also bring a lot of interference from irrelevant information, we need to manually re-filter. For example, if you use the keyword "apple" and the search engine simply can not know that you are looking for a fruit, or looking for information about Apple, or Apple's brand jeans. Root of the problem is that "Apple" is the word on the computer does not have the "semantic."

Semantic Web is committed to change this situation, it is the focus of research is how the information that the computer can understand and deal with the forms, that is with a "semantic." The concept of the Semantic Web, "meaning" is the core, can be between man and computer, computer to computer without deviation between the way the message is semantic. The basic idea of the Semantic Web is the Internet any resources to conduct a structured descriptions and the introduction of semantics, so the computer can understand the information on the Internet. Of course, the computer can not really like people to think, but by setting standards, using the standard descriptions of the meaning, the computer can automatically according to the standard analysis and reasoning, will be integrated with network services, enabling automated intelligent services into possible.