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Massive Query Expansion by Exploiting Graph Properties

Massive Query Expansion by Exploiting Graph Properties. Joan Guisado-Gámez. Josep Lluís Larriba Pey David Domínguez Sal. Problem in Information Retrieval. Query = “colored Volkswagen beetles”. Brief Introduction. Process of transforming Q O into Q E

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Massive Query Expansion by Exploiting Graph Properties

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  1. Massive Query ExpansionbyExploiting Graph Properties Joan Guisado-Gámez JosepLluísLarribaPey David Domínguez Sal

  2. Problem in Information Retrieval Query = “colored Volkswagen beetles”

  3. Brief Introduction • Process of transforming QO into QE • Detect expansion features (terms/phrases) • What kind of expansion features? • How to obtain the expansion features?

  4. Topological Query Expansion Query = “colored Volkswagen beetles” Context = “any model of Volkswagen beetles car of any color and year”

  5. Expansion Features Query = “colored Volkswagen beetles” • Most important extension Features: • “Volkswagen beetle”, “Volkswagen fusca”, “VW type 1”, “Volkswagen 1200”, “Volkswagen bug”, “Volkswagen super bug”, “VW bug”,”VWKäfer” • “Volkswagen new Beetle” • “Baja bug” • “Volkswagen group”, “VW group” • H-Shifter, engine, car, automobile,….

  6. Some Results Query = “colored Volkswagen beetles”

  7. Conclusions • Achieves good results allowing to identify new concepts. • Precision improves up to 27% • Orthogonal to linguistic techniques. • Outperforms pseudo-relevance feedback techniques.

  8. Thank you

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