SWOC - Semantic Wonder Cloud: Exploratory Search in DBpedia - SWIM 2010

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Inspired by the Google Wonder Wheel, we present Semantic Wonder Cloud (SWOC): a tool that helps users in knowledge exploration within the DBpedia dataset by adopting a hybrid approach. We describe both the architecture and the user interface. The system exploits not only pure semantic connections in the underlying RDF graph but it mixes the meaning of such information with external non-semantic knowledge sources, such as web search engines and tagging systems. Semantic Wonder Cloud allows the user to explore the relations between resources of knowledge domain via a simple and intuitive graphical interface. The system is available at http://sisinflab.poliba.it/semantic-wonder-cloud/index/ SWIM 2010 - 2nd International Workshop on Semantic Web Information Management The paper won the "Best Workshop Paper Award" at 10th International Conference on Web Engineering, ICWE 2010, held in Vienna, July 05-09, 2010. Presented by Roberto Mirizzi (http://sisinflab.poliba.it/mirizzi - roberto.mirizzi -at- gmail.com) Vienna (Austria), July 05, 2010

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Semantic Wonder Cloud: exploratory search in DBpedia Roberto Mirizzi1, Azzurra Ragone1,2, Tommaso Di Noia1, Eugenio Di Sciascio1 1Politecnico di Bari Via Orabona, 4 70125 Bari (ITALY) 2Universityof Trento Via Sommarive, 14 38100 Trento (ITALY)

SWOC (Semantic Wonder Cloud): the interface

Conclusion and Future work,[object Object]

Inspiration: Google Wonder Wheel ExploratorySearch in Google… …nice, butthereis no “semantics” in it. You can notdiscovernewknowledgeexploiting the meaningof a term (keyword/tag/query)

SWOC: SemanticWonderCloud http://sisinflab.poliba.it/semantic-wonder-cloud/index/

What is behind SWOC? (III) … … Knowledge_representation Data_management Internet_architecture … XML-based_standards Distribute_computing_architecture Semantic_Web Web_services Semantic_Web_Services OWL-S Triplestores Folksonomy … Web_service_specifications Internet_search Enterprise_application_integration Microformtas … … Legend skos:subject skos:broader Category Article

The functionalarchitecture Back-end Google Bing SPARQL Ext. Info Sources Yahoo! Graph Explorer Context Analyzer Delicious Ranker DBpedia Lookup Service Storage XML documents SQL2XML Converter Graph Generator Resource Selector Interface

DBpedia-Ranker: ranking Graph-based ranking ?r1 ?r2 isSimilar hasValue v Externalsources-based ranking

DBpedia-Ranker: contextanalysis The samesimilaritymeasureisused in the contextanalysis C ?c1 Algorithm: If(v>THRESHOLD) then r1belongsto the context; add r1to the graphexplorationqueue Else r1doesnotbelongto the context; exclude r1fromgraphexploration EndIf ?c2 belongsTo ?r1 ?c… ?cN hasValue Example: C = {ProgrammingLanguages, Databases, Software} DoesDennis Ritchiebelongsto the givencontext? v

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SWOC - Semantic Wonder Cloud: Exploratory Search in DBpedia - SWIM 2010

1. Semantic Wonder Cloud: exploratory search in DBpedia Roberto Mirizzi1, Azzurra Ragone1,2, Tommaso Di Noia1, Eugenio Di Sciascio1 1Politecnico di Bari Via Orabona, 4 70125 Bari (ITALY) 2Universityof Trento Via Sommarive, 14 38100 Trento (ITALY)

3. SWOC (Semantic Wonder Cloud): the interface

4. Background technologies

5. SWOC: how it works

6. Ranking in Linked Data (DBpedia)

8. Inspiration: Google Wonder Wheel ExploratorySearch in Google… …nice, butthereis no “semantics” in it. You can notdiscovernewknowledgeexploiting the meaningof a term (keyword/tag/query)

9. SWOC: SemanticWonderCloud http://sisinflab.poliba.it/semantic-wonder-cloud/index/

10. Whatisbehind SWOC? (I)

11. Whatisbehind SWOC? (II)

12. What is behind SWOC? (III) … … Knowledge_representation Data_management Internet_architecture … XML-based_standards Distribute_computing_architecture Semantic_Web Web_services Semantic_Web_Services OWL-S Triplestores Folksonomy … Web_service_specifications Internet_search Enterprise_application_integration Microformtas … … Legend skos:subject skos:broader Category Article

13. The functionalarchitecture Back-end Google Bing SPARQL Ext. Info Sources Yahoo! Graph Explorer Context Analyzer Delicious Ranker DBpedia Lookup Service Storage XML documents SQL2XML Converter Graph Generator Resource Selector Interface

14. DBpedia-Ranker: ranking Graph-based ranking ?r1 ?r2 isSimilar hasValue v Externalsources-based ranking

15. DBpedia-Ranker: contextanalysis The samesimilaritymeasureisused in the contextanalysis C ?c1 Algorithm: If(v>THRESHOLD) then r1belongsto the context; add r1to the graphexplorationqueue Else r1doesnotbelongto the context; exclude r1fromgraphexploration EndIf ?c2 belongsTo ?r1 ?c… ?cN hasValue Example: C = {ProgrammingLanguages, Databases, Software} DoesDennis Ritchiebelongsto the givencontext? v

16. Evaluation (I) http://sisinflab.poliba.it/evaluation

17. Evaluation (II) http://sisinflab.poliba.it/evaluation/data

18.

19.

20. Test ouralgorithmswithdifferentdomains

21. Extract more fine grainedcontexts

22. Enrich the extractedcontextusingalsorelevantproperties

23. Integrateourapproachwithrealexistingsystems

24.