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SWARMS: A Tool for Domain Exploration in Semantic Web and its Application in FOAF Domain

SWARMS: A Tool for Domain Exploration in Semantic Web and its Application in FOAF Domain. Bangyong Liang, Jie Tang, Juanzi Li, Kehong Wang Dept. of Computer Science, Tsinghua Univ. Domain Exploration Tool. Semantic Web is made up of domain specific data Some problems still exist

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SWARMS: A Tool for Domain Exploration in Semantic Web and its Application in FOAF Domain

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  1. SWARMS: A Tool for Domain Exploration in Semantic Web and its Application in FOAF Domain Bangyong Liang, Jie Tang, Juanzi Li, Kehong Wang Dept. of Computer Science, Tsinghua Univ.

  2. Domain Exploration Tool • Semantic Web is made up of domain specific data • Some problems still exist • Visualization and Navigation • Mining • Index-based Search • Association Search • SWARMS provides an easy way to explore domain data

  3. Design Goal • Easy to migrate among domains • Sourceforge, http://www.sourceforge.net • XinhuaML, Chinese News Domain • FOAF, Friend-of-a-Friend • Manage large-scale domain specific data • Index-based search, based on Lucene • Database backend storage

  4. Current Implementation • Backend Storage • Database + Jena • Index-based Search • Lucene + Database • Visualization and Navigation • JUNG based • Layout and renderer

  5. System Components PNS DB FOAF Ontology repository Jena based FOAF API Lucene Index Repository Association Search JUNG based Visualization Index-based Search User interface

  6. Index-based Search

  7. Context Visualization

  8. Paper Cluster Visualization

  9. Friend Cluster Visualization

  10. Person View

  11. Paper View

  12. Association View

  13. Data Size • Current Ontological Data Size • >400,000 persons and their publications • foaf:knows, foaf:publications, foaf:topic, foaf:maker • jena_g1t1_stmt > 3,000,000 records

  14. Performance Analysis • Index Performance • Performance for fetching one instance’s context • 20 instances with different number of propterties are evaluated

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