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A Markov random field model for term dependencies
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Novelty and diversity in information retrieval evaluation
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Selectively diversifying web search results
CIKM '10 Proceedings of the 19th ACM international conference on Information and knowledge management
Result diversification based on query-specific cluster ranking
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A Diagnostic Study of Search Result Diversification Methods
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Which queries stand to gain or loose from diversifying their results? Some queries are more difficult than others for diversification. Across a number of conceptually different diversification methods, performance on such queries tends to deteriorate after applying these diversification methods, even though their initial performance in terms of relevance or diversity tends to be good.