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ISTQB Certified Tester: AI Testing (CT-AI) · ISTQB
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- Classification assigns inputs to one of a predefined set of discrete classes (e.g., spam/not-spam, cat/dog/bird). Regression predicts a continuous numeric value (e.g., temperature, price). Clustering groups similar items without predefined labels. Dimensionality reduction (e.g., PCA, t-SNE) reduces feature count while preserving structure.