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Collection vs. Document frequency

  • The collection frequency of t is the number of occurrences of t in the collection, counting multiple occurrences.

  • Example:

  • Word

  • Collection frequency

  • Document frequency

  • insurance

  • 10440

  • 3997

  • try

  • 10422

  • 8760

  • Which word is a better search term (and should get a higher weight)?

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