| 基于RDFS的用户本体的构建与优化研究 |
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| 引用本文： | 宋丹辉.基于RDFS的用户本体的构建与优化研究[J].图书馆学研究,2012(13):2-8. |
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| 作者姓名： | 宋丹辉 |
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| 作者单位： | 中国科学院文献情报中心 |
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| 摘 要： | 文章提出了一种基于本体的用户建模方法。首先,基于用户兴趣概念集合,分别从同主题源本体的RDFS闭包中抽取子本体,然后采用多策略映射方法将其合并形成初始用户本体;其次,基于各类用户Web使用数据,挖掘高频关键词,追踪用户兴趣变化,构建增量本体;然后,利用衰减函数和相关阈值,将增量本体与初始用户本体合并,在增加新概念及其关系的同时,剔除不再感兴趣的概念,以实现用户本体的自动优化。
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| 关 键 词： | 用户建模 用户本体 RDFS 本体合并 |
The Research on Construction and Optimization of RDFS-Based User Ontology |
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| Song Danhui.The Research on Construction and Optimization of RDFS-Based User Ontology[J].Researches in Library Science,2012(13):2-8. |
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| Authors: | Song Danhui |
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| Institution: | Song Danhui |
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| Abstract: | The paper proposed an ontology-based user modeling approach.We first collected interesting concepts from users,and extracted the sub-ontologies from corresponding RDFS Closures,then mapped and merged them to get the initial user ontology.Secondly,using various types of Web data,we explored new interesting concepts from high-frequency words,and constructed the adding ontology.Based on this,using the decay function and two thresholds,we merged the adding ontology and initial user ontology,not only adding new concepts and their relations,but also removing the old concept which were no longer interested by users,and optimizing the user ontology automatically. |
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| Keywords: | user model user ontology RDFS ontology merging |
| 本文献已被 CNKI 等数据库收录！ |
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