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Context-sensitive correction

  • Need surrounding context to catch this.

  • First idea: retrieve dictionary terms close (in weighted edit distance) to each query term

  • Now try all possible resulting phrases with one word “fixed” at a time

    • flew from heathrow

    • fled form heathrow

    • flea form heathrow

  • Hit-based spelling correction: Suggest the alternative that has lots of hits.

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