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Indexing enhances the efficiency of Information Retrieval systems by enabling faster query processing, reducing I/O operations, and supporting advanced search features. It transforms linear searches into quick lookups through structures like inverted indexes, which map terms to documents. Additionally, relevance feedback and query expansion techniques improve retrieval results by modifying queries based on user feedback, although they can lead to query drift if not managed carefully.

Author

sreenidhithiyagu

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EN