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Subspace Clustering Method (II): Correlation-Based Methods

• Subspace search method: similarity based on distance or density
• Correlation-based method: based on advanced correlation models
• Ex. PCA-based approach:
• Apply PCA (for Principal Component Analysis) to derive a set of new, uncorrelated dimensions,
• then mine clusters in the new space or its subspaces
• Other space transformations:
• Hough transform
• Fractal dimensions