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Language models: pro & con

  • Novel way of looking at the problem of text retrieval based on probabilistic language modeling

      • Conceptually simple and explanatory

      • Formal mathematical model

      • Natural use of collection statistics, not heuristics (almost…)

    • LMs provide effective retrieval and can be improved to the extent that the following conditions can be met

      • Our language models are accurate representations of the data.

      • Users have some sense of term distribution.*

        • *Or we get more sophisticated with translation model

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