袁兴宇,王挺,周会平,肖君. 以本体构造中文信息过滤中的需求模型[J]. 中文信息学报, 2006, 20(3): 65-71.
YUAN Xing-yu,WANG Ting,ZHOU Hui-ping,XIAO Jun. Constructing On tology-Based Requirement Model in Chinese Information Filtering. , 2006, 20(3): 65-71.
以本体构造中文信息过滤中的需求模型
袁兴宇1,王挺1,周会平1,肖君2
1.国防科技大学计算机学院 2.上海远程教育集团
Constructing On tology-Based Requirement Model in Chinese Information Filtering
YUAN Xing-yu1,WANG Ting1,ZHOU Hui-ping1,XIAO Jun2
1.School of Computer, National University ofDefense Technology 2.Shanghai Distance Education Group
Abstract：In the task of information filtering, the profile of the user’s interests and preferences is the key to the performance of the system. In the vector space model, the profile is usually represented as a set of features, but this kind of profile can not exactly reftect the user’s information requirements for the lack of the semantic information. This paper proposes an approach to construct the user’s profile based on ontology. In our method, the features in the vector space model are defined as the instances in the ontology, and their semantic relations are represented by the means of concept-properties model. We also designed a method to compute the semantic association between the instances according to the length of their paths in the ontology graph. Furthermore, the semantic relation between the document and the profile is calculated through the semantic association between the features.
2006, Vol. 20 
