图 书 馆
RDF知识图的有效搜索Effective Searching of RDF Knowledge Graphs |
|
| 课程网址: | http://videolectures.net/iswc2018_arnaout_effective_rdf_graphs/ |
| 主讲教师: | Hiba Arnaout |
| 开课单位: | 马克斯·普朗克信息学研究所 |
| 开课时间: | 2018-11-22 |
| 课程语种: | 英语 |
| 中文简介: |  |
| 课程简介: | RDF knowledge graphs are typically searched using triple-pattern queries. Often, triple-pattern queries will return too many or too few results, making it difficult for users to find relevant answers to their information needs. To remedy this, we propose a general framework for effective searching of RDF knowledge graphs. Our framework extends both the searched knowledge graph and triple-pattern queries with keywords to allow users to form a wider range of queries. In addition, it provides result ranking based on statistical machine translation, and performs automatic query relaxation to improve query recall. Finally, we also define a notion of result diversity in the setting of RDF data and provide mechanisms to diversify RDF search results using Maximal Marginal Relevance. We evaluate the effectiveness of our retrieval framework using various carefully-designed user studies on DBpedia, a large and real-world RDF knowledge graph. |
| 关 键 词: | RDF知识图; 三重模式查询; 有效搜索RDF知识图; RDF搜索结果多样化的机制 |
| 课程来源: | 视频讲座网 |
| 数据采集: | 2022-12-29：cyh |
| 最后编审: | 2022-12-29：cyh |
| 阅读次数: | 33 |