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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 - PowerPoint PPT Presentation
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SWARMS: A Tool for Domain Exploration in Semantic Web and its
Application in FOAF Domain
Bangyong Liang,Jie Tang,Juanzi Li,
Kehong WangDept. of Computer Science, Tsinghu
a Univ.
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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
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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
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Current Implementation Backend Storage
Database + Jena
Index-based Search Lucene + Database
Visualization and Navigation JUNG based Layout and renderer
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System Components
PNSDB
Jena basedFOAF API
FOAFOntologyrepository
Lucene
IndexRepository
Index-basedSearch
JUNG basedVisualization
Association Search
User interface
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Index-based Search
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Context Visualization
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Paper Cluster Visualization
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Friend Cluster Visualization
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Person View
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Paper View
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Association View
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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
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Performance Analysis Index Performance
Performance for fetching one instance’s context 20 instances with differen
t number of propterties are evaluated
Keyword Number of Results
Time(seconds)
Li 921 0.11(s)
Zhang 759 0.11(s)
James 545 0.09(s)
Liang 180 0.09(s)
Tim 156 0.09(s)
Baul 0 0.09(s)
Max(s) Min(s) Average(s)
0.02 0.01 0.014