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Weighting may differ in queries vs documents

  • Many search engines allow for different weightings for queries vs. documents

  • SMART Notation: denotes the combination in use in an engine, with the notation ddd.qqq, using the acronyms from the previous table

  • A very standard weighting scheme is: lnc.ltc

  • Document: logarithmic tf (l as first character), no idf and cosine normalization

  • Query: logarithmic tf (l in leftmost column), idf (t in second column), no normalization …

  • A bad idea?


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