Obtaining Lists of Themes, Gists, and Theme Summaries

The following table describes lists of themes, gists, and theme summaries.

Table 5-1 Lists of Themes, Gists, and Theme Summaries

Output Type Description

List of Themes

A list of the main concepts of a document.

You can generate list of themes where each theme is a single word or phrase or where each theme is a hierarchical list of parent themes.

Gist

Text in a document that best represents what the document is about as a whole.

Theme Summary

Text in a document that best represents a given theme in the document.

To obtain this output, you use procedures in the CTX_DOC supplied package. With this package, you can do the following:

  • Identify documents by ROWID in addition to primary key

  • Store results in-memory for improved performance