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Recap of the last lecture

  • Improving search results

    • Especially for high recall. E.g., searching for aircraft so it matches with plane; thermodynamic with heat

  • Options for improving results…

    • Global methods

      • Query expansion

        • Thesauri

        • Automatic thesaurus generation

      • Global indirect relevance feedback

    • Local methods

      • Relevance feedback

      • Pseudo relevance feedback


Speaker notes:

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