This document summarizes a presentation on searching semantic web objects based on class hierarchies. The presentation discusses using class hierarchies to filter and restrict queries, recommends subclasses to refine searches, and uses an inverted index to match query terms to classes. It also covers heuristics for determining provenance of class typing information and an algorithm for recommending subclasses based on coverage of search results.

1. Searching Semantic Web Objects Based on Class Hierarchies Gong Cheng , Weiyi Ge, Honghan Wu, Yuzhong Qu Institute of Web Science, School of Computer Science and Engineering Southeast University, Nanjing, China Presentation at the WWW 2008 Workshop: Linked Data on the Web (LDOW2008) http://iws.seu.edu.cn/services/falcons/

2. Information Islands vs. Web of Data

3. Information Islands vs. Web of Data

4. Information Islands vs. Web of Data

7. Demo

8. Demo

9. Demo

10. Navigating Class Hierarchies for Query Restriction Filtering results Recommending subclasses

13. Class-inclusion Reasoning

14. Class-inclusion Reasoning (cont.)

18. Summarizing SW Objects

22. Architecture

23. RDF Sentence