AI engineering glossary · Feature engineering data prep
What is tomek links?
Tomek links: A pair of points from opposite classes that are each other's nearest neighbour. Removing the majority-class member of each pair cleans the class boundary and reduces noise, and is used as an undersampling technique.
Tomek links: an example
If a non-fraud point and a fraud point are each other's nearest neighbour, the non-fraud one is dropped.
Related terms
More Feature engineering data prep terms
- Training-serving skew
- Undersampling
- Unit vector scaling
- Unknown category handling
- Variance threshold
- Weight of evidence
- Window feature
- Winsorization
Where you learn it
Tomek links is part of the AI Engineering Program, which teaches it with notes, a hands-on lab and an exam. The first lesson is free.