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Extended biwords

  • Parse the indexed text and perform part-of-speech-tagging (POST).

  • Bucket the terms into (say) Nouns (N) and articles/prepositions (X).

  • Call any string of terms of the form NX*N an extended biword.

    • Each such extended biword is now made a term in the dictionary.

  • Example: catcher in the rye

                   N           X   X    N

  • Query processing: parse it into N’s and X’s

    • Segment query into enhanced biwords

    • Look up in index: catcher rye


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