【摘要】 提出了一种基于本体的,综合改进的spread activation算法和语义分析的混合检索方法。通过改进的spread activa-tion算法和本体实例之间语义关联强弱的分析,得到一组查询词的相似词集合,从而提高了查询关键字到本体概念映射的完整性与准确性。设计实现了相应的检索系统,实验表明,该系统可以有效地提高检索的查全率与查准率。更多还原

【Abstract】 Bring forward a hybrid retrieval method which integrates the spread activation arithmetic and semantic analysis based on ontology.The semantic analysis between the modified spread activation arithmetic and ontological samples can get the similar words aggregate of the words you want to search for to enhance the integrity and accuracy of the ontology mapping of keywords.The design can realize the corresponding retrieval system,and the experiment also indicates that this system can improve recall ratio and precision ratio effectively.更多还原