With the development of Internet, net resources became increasingly rich.However, traditional search engine exist many disadvantages. For example, it returned the web pages not the exact answers, the precision is very low. Furthermore, it was too difficult to understand the purpose because traditional search engine which based on the keyword index did not deal with
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In nature, the technology of virtual reality is a human-computer interaction method. In the past, it’s difficult to promote the technology of virtual reality because of the specialized equipments and expensive hardware. Nowadays, with the rapid development of Web 3D, desktop virtual reality system has applied into all works of life, which greatly reduces the
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Along with the development of the network, the quantity of information increases sharply but lacks of designability and that makes it harder to find necessary knowledge for the user, and also the difficulty of maintaining the information system is greatly increased. Based on this, through the establishment and sharing of the ontology efficiently so as
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Traditional information retrieval on the mass excavation of the depth of information resources are very limited and can not meet user needs in the semantic knowledge, the main reason is to describe the information resources of different formats may exist between a semantic link, but can not use semantic links Description of existing expressing it.
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With the development of the Internet , finding information throw search engines has becomes a part of people’s everyday life. The users only need to enter a query keyword, and then search engines return the best matched page links from the Web. But search engines can not return the direct answers. Users need to filter
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With the development of the times, users are no longer satisfied with traditional information retrieval to provide simple link. Automatic question answering in recent years has been paid a lot of attention in many scientific research institutions in China and abroad, but a mature Chinese question answering system has not yet appeared relatively, especially the
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The integrable-ware teaching system overcomes the drawbacks of teaching ideas fixed in the traditional courseware model, which has a high degree of flexibility and reorganization; it not only has the advantages of the traditional courseware such as”visual, image”, but also incorporates the advantages of a”blackboard”teaching mode such as”flexible, free, and easy to expand”.It is a”building
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Context Awareness as one of the key topics of Ubiquitous Computing, through the data processing on the data from ubiquitous network, detects the user’s context, then provides appropriate services according to the detected context. When applied on detecting the danger of users, it is called danger aware.This paper discusses how to detect kids’danger in the
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During the design of modern products, as the increase of products’function, their structures are much more complicated. So, may be it need to unite a number of units together to complete one product’s design, and these units may be located in different locations. Thus, distributed and collaborative products design has an important significance. This dissertation
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As an efficient hierarchical structure and semantics concept model, Ontology have aroused the concern of many researchers at home and abroad since introduced into the computer science, and is widely applied to many areas of computer science.Ontology construction method consists of manual method and semi-automatic method. Manual method has many drawbacks, such as project complexity,
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