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Extracts a table containing one row per unique document keyword found in the database, where a keyword is unique by the keyword itself and the type of keyword it is (author or ISI). The resulting table contains the following columns:

  • keyword: The keyword.
  • type: The type of the keyword. Keywords are either provided by the authors of the papers, or generated by ISI automatically

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  • occurrences_

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  • in_dataset: The number of times

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  • this unique keyword occurs in the dataset. Keywords from authors are counted

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  • separately from keywords generated by ISI.