LexExp is an open-source, data-centric lexicon expansion system that generates spelling variants of lexical expressions in a lexicon using a phrase embedding model, lexical similarity-based natural language processing methods and a set of tunable threshold decay functions. The system is customizable, can be optimized for recall or precision and can generate variants for multi-word expressions.

Availability and implementation

Code available at:; data and resources available at:

Supplementary information

Supplementary data are available at Bioinformatics online.

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