Interview questions

Card-Not-Present Fraud Detection for a Market Dominated by Online Spending

Companies: Visa

ML System Design · Trust & Safety

Choose a Parameter to Reduce Underfitting in Gradient-Boosted Trees

Companies: C3 Ai

ML Fundamentals · Supervised Learning

Choose and compute recommender evaluation metrics

Companies: Meta

Choose and justify ML algorithms for tabular prediction

Companies: Capital One

Choose Between Fine-Tuning and RAG for Client Chatbot

Companies: Amazon

Choose Between Precision and Recall for a Classification Decision

Companies: Citadel

Choose clustering vs regression; explain KNN

Companies: Thumbtack

Communication & Stakeholders · Unsupervised Learning

Choose evaluation metrics for imbalanced risk model

Companies: Onemain Financial

Choose Labels and Losses for Multiple Engagement Outcomes

Companies: Snapchat

Model Evaluation · Supervised Learning

Choose linear regression or decision tree appropriately

Companies: TikTok

Choose LoRA for Fine-Tuning and Explain Its Limitations

Companies: Siemens

Fine-Tuning & Alignment Techniques

Choose metrics for fake-user classifier

Companies: Meta

Choose ML metrics under asymmetric costs

Companies: Meta

Choose Models for Imbalanced Data and Time-Series Forecasting

Companies: Amazon

Supervised Learning · Time Series & Forecasting

Choose models for trading tasks

Companies: Citadel

ML Fundamentals · Model Evaluation

Choose optimal posted price under adverse selection

Companies: Imc

Choose Precision, Recall, or F1 for Agent Evaluation

Companies: ByteDance

Model Evaluation

Choose Ranking Functions, Customer Value Metrics, and Predictive Models

Companies: ByteDance

Metrics & KPIs · SQL

Choose regularization norms and model formulations

Companies: Amazon

Choose threshold under asymmetric costs

Companies: Meta

Choose Tokenization and Dense or Sparse Retrieval

Companies: C3 Ai

Choosing Between Retrieval-Augmented Generation and Fine-Tuning for an LLM Product

Companies: Intuit

AI Product Management · Fine-Tuning & Alignment Techniques