AI engineering glossary · Feature engineering data prep
What is lemmatization?
Lemmatization: Reducing a word to its dictionary base form, called the lemma, using vocabulary and grammar knowledge, so 'better' becomes 'good' and 'was' becomes 'be'. It is slower than stemming but yields real words.
Lemmatization: an example
'Feet' is lemmatised to 'foot' and 'running' to 'run'.
Related terms
More Feature engineering data prep terms
- Listwise deletion
- Log transform
- Mahalanobis distance
- Max-abs scaling
- Mean imputation
- Median imputation
- Min-max scaling
- Missing at random
Where you learn it
Lemmatization is part of the AI Engineering Program, which teaches it with notes, a hands-on lab and an exam. The first lesson is free.