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Personalized Search and Visualization for YourNews

Personalized Search and Visualization for YourNews. Jae-wook Ahn PAWS Meeting 03/23/2007. Personalized Search. Baseline Standard vector spaced model based search TF-IDF weighting Krovetz stemming Cosine similarity Personalization Query expansion by N UM terms N = 5.

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Personalized Search and Visualization for YourNews

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  1. Personalized Search and Visualization for YourNews Jae-wook Ahn PAWS Meeting 03/23/2007

  2. Personalized Search • Baseline • Standard vector spaced model based search • TF-IDF weighting • Krovetz stemming • Cosine similarity • Personalization • Query expansion by N UM terms • N = 5

  3. Personalized visualization • VIBE visualization • POI – query terms • Documents – Search results (news articles) • Personalization • POI separation • User query terms • UM terms • POI presentation • Dual positioning of POI’s (cf. circular) • Color coding

  4. Personalized visualization (cont’d) • Users can see, • Roles of each query term – baseline VIBE • How automatic query expansion (or personalization) works • Roles of user query terms – baseline search • Roles of system UM terms - personalized search

  5. Demonstration • http://ir.exp.sis.pitt.edu/gale/news

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