PPT Slide

Discretization (Dougherty et al., 1995)

Global Local

- 1RD (Holte)

- Adaptive Quantizers

- ChiMerge (Kerber) - Vector Quantization

Supervised - D-2 (Catlett) - Hierarchical Maximum

- Entropy-based (Fayyad) Entropy

- Supervised MCC

(Monothetic Constrast Criterion)

- Predictive Value Max

- Equal width interval Unsupervised - Equal frequency interval - k-means clustering

- Unsupervised MCC

Necessary in many cases but lost information and hard to interpret

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