In the current web, it is not possible to manage information resources manually and intelligently. And most users prefer more accurate information. To overcome these limitations of the current web, the Semantic web wa...
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ISBN:
(纸本)9788955191318
In the current web, it is not possible to manage information resources manually and intelligently. And most users prefer more accurate information. To overcome these limitations of the current web, the Semantic web was conceived. Unlike the current web, in the Semantic web, metadata and ontology will play important roles for advancedinformation retrieval systems. For describing semantics and reasoning about information resources on the web, RDF, RDF Schema and OWL are proposed by W3C. OWL has rich expressive power and is considered as the next standard language for describing metadata and ontology. the related information resources are placed in distributed systems on the web. So, for providing seamless services without the awareness of far distance, efficient management of the distributed information resources is required. And to be provided with richer query results, people need to acquire related informationthrough integrating the distributed ontologies. Among languages for describing metadata and ontology, only OWL can support dispersibility of web. In this paper, first we classify features of OWL for supporting distributed environment on the web and propose strategies for united query processing of the distributed ontologies. Secondly, we suggest methods of storing ontologies according to the proposed strategies. Finally, we propose an indexing method to improve query answering performance.
Relevance analysis is a regular and important task in many technical fields. We can get the relevance score by measuring (or quantifying) the result of relevance analysis. In this paper we have reviewed two main tools...
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ISBN:
(纸本)9780769529301
Relevance analysis is a regular and important task in many technical fields. We can get the relevance score by measuring (or quantifying) the result of relevance analysis. In this paper we have reviewed two main tools for relevance measure, which are the covariance and the mutual information, and we have discussed that there may be some problems in relevance measure if we use the above two methods, then we give the definition on Partial Condition Entropy(PCE) based on the informationtheory and presented a new method for relevance measure by using the PCE. there are mainly three advantages for relevance measure by using our method: (1) the relevance degree can be compared more easy than other methods because the score of relevance calculation is equal to a numeral between 0 and 1;(2) By using the method, we can not only know whether there is relevance between the considered events but also get a special score that represents the relevance degree of these events;(3) When we calculate the PCE, we needn't know all the conditional probability density, so our method is more flexible than the calculation of mutual information. To demonstrate the usefulness of our method for relevance measure, we apply it to the sentence relevance analysis in Natural languageprocessing(NLP). We find that our result of relevance measure is a more truly reflection on the relationship between the sentences.
te@chernavi is an application for the secure management of personal information and students' records in school. It aims to support schools that are undergoing big changes brought by structural reforms of the Japa...
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ISBN:
(纸本)9780387693101
te@chernavi is an application for the secure management of personal information and students' records in school. It aims to support schools that are undergoing big changes brought by structural reforms of the Japanese society from the perspective of school administration, which is a key part of school management. It realizes also a secure system irrespective of platforms thanks to system development with open resources.
the traditional English text chunking approach identifies phrases by using only one model and phrases withthe same types of features. It has been shown that the limitations of using only one model are that: the use o...
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ISBN:
(纸本)9780769529301
the traditional English text chunking approach identifies phrases by using only one model and phrases withthe same types of features. It has been shown that the limitations of using only one model are that: the use of the same types of features is not suitable for all phrases, and data sparseness may also result. In this paper, a divide-conquer strategy is proposed and applied in the identification of English phrases. And then, this strategy is rapid transplanted to Chinese text chunking. this strategy divides the task of chunking into several sub-tasks according to sensitive features of each phrase and identifies different phrases in parallel. then, a two-stage decreasing conflict strategy is used to synthesize each sub-task's answer, where the main features are: one, each phrase uses its own sensitive features;two, avoidance of data sparseness. through testing on public corpus (English) and Chinese Penn Treebank (Chinese), F score of English chunking achieves to 95.14% and that of Chinese chunking is 95.23%. these results are state of the art withthe best results that have been reported..
Within the larger area of automatic acquisition of knowledge from the web, we introduce a method for extracting relevant attributes, or quantifiable properties, for various classes of objects. the method extracts attr...
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Within the larger area of automatic acquisition of knowledge from the web, we introduce a method for extracting relevant attributes, or quantifiable properties, for various classes of objects. the method extracts attributes such as capital city and President for the class Country, or cost, manufacturer and side effects for the class Drug, without relying on any expensive language resources or complex processing tools. In a departure from previous approaches to large-scale information extraction, we explore the role of web query logs, rather than web documents, as an alternative source of class attributes. the quality of the extracted attributes recommends query logs as a valuable, albeit little explored, resource for information extraction.
Knowledge Management Platform plays an important role in helping spread knowledge of individuals or groups across organizations. Many current knowledge management platforms met with deficiencies of poor tacit knowledg...
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ISBN:
(数字)9780387754949
ISBN:
(纸本)9780387754932
Knowledge Management Platform plays an important role in helping spread knowledge of individuals or groups across organizations. Many current knowledge management platforms met with deficiencies of poor tacit knowledge exploitation, slow knowledge update, limited knowledge sharing and weak user participation. this paper attempts to find solutions to those problems by integrating web2.0 with knowledge management, and design a web2.0-based Knowledge Management Platform. A web2.0-based knowledge management model is put forth, and the framework and technology architecture of our platform has also been researched.
these days, web services, which are based on XML and consist of several XML-related technologies, have been emerging as a promising technology, and it seems that web services may be used in the field of network manage...
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ISBN:
(数字)9780387754949
ISBN:
(纸本)9780387754932
these days, web services, which are based on XML and consist of several XML-related technologies, have been emerging as a promising technology, and it seems that web services may be used in the field of network management. In this paper, we examine web services as a XML-based approach to network management. Since web services are a Service-Oriented Architecture (SOA) more than just a set of technologies, it could be used in XML-based network management, not only at the technology level, but also at the architecture level, which has many remarkable advantages and may be more effective in network management along withthe concepts of Peer-to-Peer and Point-to-Point, in order to make a better use of its capability. Correspondingly, two models are presented to further demonstrate the potential of web services in XML-based network management.
Recent efforts in the area of learning technology have resulted in a considerable improvement in the interoperability of digital education resources. On the basis of sharing and integration of digital educational reso...
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ISBN:
(纸本)9780387754659
Recent efforts in the area of learning technology have resulted in a considerable improvement in the interoperability of digital education resources. On the basis of sharing and integration of digital educational resources, knowledge processing and service considers the Semantic knowledge extraction of metadata of educational resources, Construction ontology for educational resources, and combining the users personality characteristics, providing semantic-based personalized retrieval and delivery services. in this paper, we work out the architecture of knowledge processing and service system for digital education, then discuss the semantic representation of digital education resources, semantic mining and discovery of digital education resources and personalized knowledge delivery service.
the 3D video is the core technology of next generation multimedia service for providing the best quality service to the users. this paper propose the structure of the ObjectDescriptor(OD) steam which can provide the m...
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For every organization, the management information system is not only a computer-based human-machine system that can support and help the administrative supervisor but also an open technology system for society. It sh...
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ISBN:
(数字)9780387754949
ISBN:
(纸本)9780387754932
For every organization, the management information system is not only a computer-based human-machine system that can support and help the administrative supervisor but also an open technology system for society. It should supply the interaction function that face the organization and environment, besides gather, transmit and save the information. the authors starts withthe intension of contingency theory and design a web-based management information system for academic degree & graduate education which is based on analyzing of work flow of domestic academic degree and graduate education system. What's more, the application of the system is briefly introduced in this paper.
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