图 书 馆
词汇关联性的实证研究及其在推荐系统中的应用An Empirical Study of Vocabulary Relatedness and Its application to Recommender Systems |
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| 课程网址: | http://videolectures.net/iswc2011_cheng_study/ |
| 主讲教师: | Gong Cheng |
| 开课单位: | 南京大学 |
| 开课时间: | 2011-11-25 |
| 课程语种: | 汉简 |
| 中文简介: |  |
| 课程简介: | When thousands of vocabularies having been published on the SemanticWeb by various authorities, a question arises as to how they are related to each other. Existing work has mainly analyzed their similarity. In this paper, we inspect the more general notion of relatedness, and characterize it from four angles: well-defined semantic relatedness, lexical similarity in contents, closeness in expressivity and distributional relatedness. We present an empirical study of these measures on a large, real data set containing 2,996 vocabularies, and 15 million RDF documents that use them. Then, we propose to apply vocabulary relatedness to the problem of post-selection vocabulary recommendation. We implement such a recommender service as part of a vocabulary search engine, and test its effectiveness against a handcrafted gold standard. |
| 关 键 词: | 语义网; 关联性; 相似性; 词汇搜索引擎 |
| 课程来源: | 视频讲座网 |
| 最后编审: | 2019-12-19：lxf |
| 阅读次数: | 51 |