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Matthews Correlation Coefficient Quiz

Test confusion-matrix reasoning, MCC calculations and class-imbalance pitfalls with examples of spam filters and defect detection.

İlgili kılavuz yollarıMatthews Correlation Coefficient
Soru 1 arasında 8

A filter labels all 1,000 messages legitimate when 990 truly are legitimate. Why is its 99% accuracy insufficient evidence of useful spam detection?