图 书 馆
利用虚拟现实探索语义社会网络Exploring Semantic Social Networks using Virtual Reality |
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| 课程网址: | http://videolectures.net/iswc08_halpin_essn/ |
| 主讲教师: | Harry Reeves Halpin |
| 开课单位: | 万维网联盟 |
| 开课时间: | 2008-11-24 |
| 课程语种: | 英语 |
| 中文简介: |  |
| 课程简介: | We present Redgraph, the first generic virtual reality visualization program for Semantic Web data. Redgraph is capable of handling large data-sets, as we demonstrate on social network data from the U.S. Patent Trade Office. We develop a Semantic Web vocabulary of virtual reality terms compatible with GraphXML to map graph visualization into the Semantic Web itself. Our approach to visualizing Semantic Web data takes advantage of user-interaction in an immersive environment to bypass a number of difficult issues in 3-dimensional graph visualization layout by relying on users themselves to interactively extrude the nodes and links of a 2-dimensional graph into the third dimension. When users touch nodes in the virtual reality environment, they retrieve data formatted according to the data’s schema or ontology. We applied Redgraph to social network data constructed from patents, inventors, and institutions from the United States Patent and Trademark Office in order to explore networks of innovation in computing. Using this data-set, results of a user study comparing extrusion (3-D) vs. no-extrusion (2-D) are presented. The study showed the use of a 3-D interface by subjects led to significant improvement on answering of fine-grained questions about the data-set, but no significant difference was found for broad questions about the overall structure of the data. Furthermore, inference can be used to improve the visualization, as demonstrated with a data-set of biotechnology patents and researchers. |
| 关 键 词: | 虚拟现实; 可视化程序; 图形可视化 |
| 课程来源: | 视频讲座网 |
| 最后编审: | 2019-04-28：cwx |
| 阅读次数: | 63 |