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中文摘要：
以突发事件领域为例，针对本体构建中领域概念间关系自动抽取的问题，提出了一种混合的领域概念间关系自动抽取方法，将领域概念间的关系分成关系类型未知和已知2种情况，并分别基于扩展关联规则和关系抽取规则进行抽取，同时提出了构造和自动扩展关系抽取规则的方法．实验结果表明，所提出的方法是可行和有效的，不仅能获得特定领域中存在的丰富的语义关系，而且能获得较好的性能．
英文摘要：
Aiming at automatic extraction of relationships between domain concepts in ontology construc- tion, a hybrid automatic extraction method is proposed. The relationships existing in domain concepts are classified into two kinds： one is the relationships with unknown types extracted by the extended associa- tion rule; the other is the relationships with the known types extracted by extraction rules. Meanwhile, the formation and expansion methods of extraction rules are presented. Experiments demonstrate that the proposed method is feasible and effective. It can not only obtain rich relationships in special domain, but also obtain better performance.
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Image Fusion based on Nonsubsampled Contourlet Transform and Saliency-Motivated Pulse Coupled Neural
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