[熱身賽第二輪] 評估分類系統(1) [Warm-up Round 2] Evaluating Classification Systems (1)
Team 473
小汐旁門左道
教學主題
Topic
[熱身賽第二輪] 評估分類系統(1)
[Warm-up Round 2] Evaluating Classification Systems (1)
其他模型
Others
Big Concept: Evaluating Classification Systems
Topic: Why 99% Accuracy Can Still Be a Bad Model
Bloom's Taxonomy: understand, remember
Learning Goal: Explain why accuracy alone can be misleading on imbalanced datasets, and describe a case where a 99% accurate model is still not useful.
Key Learning Points: class imbalance; majority-class baseline
學生背景
Student Persona
Grade: 10th gradeFocus Time: 15 minutesBackground Knowledge: Has: percentages, ratios; Lacks: confusion matrices, precision, recall, and cost-sensitive evaluation.