Can you walk me through the factor design logic in one of the projects listed on your resume? What was your thought process and rationale behind selecting and constructing those factors? In your resume, you mentioned a trading/investment strategy. Could you explain the core logic and ideas behind it? How did it perform in backtests or live trading (e.g., Sharpe ratio, drawdown, returns)? How did you validate the factors or strategy in your project? What robustness checks did you perform (e.g., out-of-sample testing, subsample analysis)? What challenges did you face when implementing the strategy, and how did you address them? How would you test if a factor has predictive power? What statistical methods would you use? Explain the difference between in-sample and out-of-sample overfitting in factor models. How do you handle multicollinearity among factors?