Detect and suppress bad sellers robustly
Company: TikTok
Role: Data Scientist
Category: Machine Learning
Difficulty: hard
Interview Round: Technical Screen
Overview: This question evaluates a candidate's competence in designing end-to-end machine learning risk systems, including label strategy and triage, feature engineering and leakage control, modeling with cost-sensitive losses, evaluation and calibration, ranking integration, and human-in-the-loop operations.
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