This page is a brief overview of the development of the word sketch indices over time.
version 4 (released 2015)
- fixed issues in indexing very small corpora
- changes to score computations (documented on the page Statistics used in Sketch Engine)
version 3 (released 2014; internal use only)
- added commonest match indices
- uses more compact index structure to reduce index size on large corpora
version 2 (released 2011)
- added collocation positions indices
