Research on Chinese Ontology Instance Extension Based on SVM

Jie Liu, Guang Wang, Zukai Jiang
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引用次数: 4

Abstract

Extension of ontology instance is the important part of ontology maintenance. In this paper, a novel and effective method is proposed to extending ontology instances from Chinese free text, which is achieved with classification using support vector machine (SVM). Firstly, classification features are extracted in terms of syntax and semantics from the training texts and the new texts based on the existed Chinese ontology. Then the ontology is turned into tree hierarchical structure which is used as the training and learning strategy of SVM classifier. Finally new ontology instances are extracted from the new texts according to the training results. The advantage of this method is that the semantic of ontology elements in texts is made full use of, and instances extraction and classification are completed in the identical procedure at same time. Experimental results show that the average accuracy of instances extraction and classification reached 86.6%, which is satisfactory.
基于支持向量机的中文本体实例扩展研究
本体实例的扩展是本体维护的重要组成部分。本文提出了一种基于支持向量机(SVM)分类的中文自由文本本体扩展方法。首先,在已有中文本体的基础上,从训练文本和新文本中提取语法和语义分类特征;然后将本体转化为树状层次结构,作为支持向量机分类器的训练和学习策略。最后根据训练结果从新的文本中提取新的本体实例。该方法的优点是充分利用了文本中本体元素的语义,在同一过程中同时完成了实例抽取和分类。实验结果表明,实例提取和分类的平均准确率达到86.6%,令人满意。
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