← All modelsalgorithm
K-Nearest Neighbors
beginnersupervised
non parametricclassificationregressiontabular
KNN predicts from the labels of the most similar stored examples.
Mechanisms
nearest neighborsdistance
Properties
local methodnonlinear
Constraints
poor extrapolationrequires scalingsensitive to high dimensionslow inference
Practical profile
- Explainability
- medium
- Training cost
- low
- Inference cost
- high
- Data appetite
- medium