【摘要】 随着数据的大量产生,数据之间的结构和语义冲突问题变得日益严重。通过屏蔽数据源的结构、语义异构性能够有效提高信息交流、处理和反馈的效率,增强系统之间通过协作解决复杂问题的能力。本文基于本体来解决语义异构问题。重点讨论了Web数据的抽取,XML到RDF格式的数据转换,RDF之间的映射,最后给出了集成的模型。更多还原

【Abstract】 Along with a great deal of creation of the data,confliction problems between structure and the Semantic righteousness of data become increasingly serious.By shielding the data source structure,heterogeneous semantics can effectively improve the efficiency of information exchange,handling and feedback thus to enhance the capability of solving complex matters between systems.This paper is intended for the solution of heterogeneous semantics problems.The extraction of web data,data switch from XML format to RDF format,and the Mapping between RDF are discussed.And an integrated model is given in the end.更多还原