Reading Cohort Decay Curves Without Overfitting
Why the steepest drop in month two often reflects onboarding gaps rather than product failure — and how to annotate curves so executives ask better questions.
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Practical writing on segmentation choices, cohort interpretation, and reporting decisions for retail and membership businesses in Korea.
Segmenting Korean Retail Shoppers by Visit Rhythm
Department stores and specialty retailers in Busan and Seoul often share transaction data but define 'active' differently. We outline a rhythm-based segmentation that travel and holiday peaks do not distort.
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When to Resegment Your Customer Base
Segments built during a single acquisition push rarely survive two full fiscal years. Signs that your current groupings need redefinition — and what to preserve from the old model.
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Cohort Tables vs Segmentation Matrices: Choosing the Right View
Board members often request 'the segmentation slide' when a cohort table would answer the actual question. A practical guide to matching visualization type to the decision at hand.
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