Iris Flower Classification

Task 1 · Classification

Identifies an iris flower's species (setosa, versicolor or virginica) from four measurements. Four classifiers were compared; K-Nearest Neighbours won on cross-validation.

Code on GitHub ↗ Notebook ↗

93.3%test accuracy

96.7%5-fold CV accuracy

4models compared

150flowers

Try it: measure a flower

Load a sample:

Predicted species

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Your flower (black ring) among the 120 training flowers, by petal size. The model votes using the 5 nearest flowers across all four measurements.

Pairplot of iris features by species — Petal measurements separate the species

Feature importance — Petal length & width matter most

Confusion matrices — Only versicolor/virginica get confused

Model comparison — KNN has the best cross-validation score