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PRP and BIR

  • Getting reasonable approximations of probabilities is possible.

  • Requires restrictive assumptions:

    • term independence

    • terms not in query don’t affect the outcome

    • boolean representation of documents/queries/relevance

    • document relevance values are independent

  • Some of these assumptions can be removed

  • Problem: either require partial relevance information or only can derive somewhat inferior term weights


Speaker notes:

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