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Bayesian Networks for Text Retrieval (Turtle and Croft 1990)

  • Standard probabilistic model assumes you can’t estimate P(R|D,Q)

    • Instead assume independence and use P(D|R)

  • But maybe you can with a Bayesian network*

  • What is a Bayesian network?

    • A directed acyclic graph

    • Nodes

      • Events or Variables

        • Assume values.

        • For our purposes, all Boolean

    • Links

      • model direct dependencies between nodes

Speaker notes:

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