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Improving Semantic Search via Integrated Personalized Faceted and Visual Graph Navigation

Improving Semantic Search via Integrated Personalized Faceted and Visual Graph Navigation. Michal Tvarožek, Michal Barla, György Frivolt, Marek Tom ša , Mária Bieliková. { Tvarozek,barla,frivolt,tomsa,bielik } [at] fiit.stuba.sk Institute of Informatics and Software Engineering

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Improving Semantic Search via Integrated Personalized Faceted and Visual Graph Navigation

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  1. Improving Semantic Search via Integrated Personalized Faceted and Visual Graph Navigation Michal Tvarožek, Michal Barla,György Frivolt, Marek Tomša, Mária Bieliková {Tvarozek,barla,frivolt,tomsa,bielik} [at] fiit.stuba.sk Institute of Informatics and Software Engineering Faculty of Informatics and Information Technologies Slovak University of Technology in Bratislava

  2. Motivation • Semantic Web applications • Search and navigation related issues • Difficult construction of queries and ambiguity • Open ended and exploratory tasks • Complex and hard to use search interfaces • Insufficiency of classical faceted browsers • Suitability of visual approaches SOFSEM 2008, High Tatras, Slovakia

  3. Personalized faceted and visual browsing SOFSEM 2008, High Tatras, Slovakia

  4. Example: Faceted browser SOFSEM 2008, High Tatras, Slovakia

  5. Faceted browsing challenges • Managing information overload • Too many facets (complex information spaces) • Too many restrictions (large information spaces) • Still too many search results • Hard to understand instance details • Advanced exploratory tasks SOFSEM 2008, High Tatras, Slovakia

  6. Faceted browser enhancements SOFSEM 2008, High Tatras, Slovakia

  7. Facet adaptation, annotation, recommendation SOFSEM 2008, High Tatras, Slovakia

  8. Faceted browser enhancements SMAP 2007

  9. Example: Visual navigation SOFSEM 2008, High Tatras, Slovakia

  10. Navigating search results • Hierarchical clusters • Cluster size annotation • Similarity annotation • Annotations • Property summarization • Most frequent properties SOFSEM 2008, High Tatras, Slovakia

  11. Navigating instance neighborhoods SOFSEM 2008, High Tatras, Slovakia

  12. Navigating instance properties SOFSEM 2008, High Tatras, Slovakia

  13. Relevance and user models • Automatic acquisition from user behavior • User characteristics (long-term and short-term) • In-session behavior • Global trends and popularity • Similar users and social relations SOFSEM 2008, High Tatras, Slovakia

  14. Conclusions (1) • Evaluation with multiple domain ontologies • Scientific publications (mapekus.fiit.stuba.sk) • Digital photographs • Prototype implementation • Factic + ClusterNavigator/Clusterer • Java, Sesame, OWL + Prefuse, MySQL SOFSEM 2008, High Tatras, Slovakia

  15. Conclusions (2) • Integrated faceted and visual navigation • Personalization improves user experience • Future work • Handling multiple/multi-domain ontologies • Leveraging social networks for clustering, navigation and visualization SOFSEM 2008, High Tatras, Slovakia

  16. mapekus.fiit.stuba.sk SOFSEM 2008, High Tatras, Slovakia

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