A comprehensive unsupervised learning project analyzing credit card customer behavior. By integrating PCA for dimensionality reduction, t-SNE for manifold visualization, and a hybrid clustering approach (K-Means + DBSCAN), this report identifies four distinct behavioral personas: The VIP Shoppers, The Active Transactors, The Revolving Borrowers, and The Inactive users. Includes technical justifications for median imputation, feature scaling, and outlier detection to drive strategic financial recommendations.

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NBN sponge distributions for 7 of some of the UK's most common and charismatic sponge species.