GDEX is an abbreviation for “Good Dictionary EXamples”. It is a system for evaluation of sentences with respect to their suitability to serve as dictionary examples. When GDEX is on, good dictionary example candidates will be displayed first in a concordance making it easy for lexicographers to identify suitable example sentences in a corpus.

To make the concordance result screen display only good dictionary examples:

  • Select a corpus and make a concordance.
  • Click on View Options in the left-hand side menu.
  • Tick the Sort good dictionary examples (GDEX) tickbox.
  • You can also specify how many sentences should be sorted using GDEX (the default is 100).
  • If more than one GDEX configuration is available for the selected corpus a drop down list is shown to select the configuration. The configuration selected at this place is also used for sorting sentences in TickBox Lexicography (TBL).
  • When you click on “Change View Options”, your concordance will have the specified number of lines sorted at the start of the concordance (the best at the top). All other concordance lines will be placed positioned beneath these and are not ranked by the GDEX quality.

See the manual for GDEX.


Adam Kilgarriff, Miloš Husák, Katy McAdam, Michael Rundell and Pavel Rychlý (2008). GDEX: Automatically finding good dictionary examples in a corpus. In Proceedings of the 13th EURALEX International Congress. Spain, July 2008, pp. 425–432.