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# Feature Engineering for Financial ML
name: feature-engineering
description: Feature engineering for financial ML — lag features, rolling stats, ranks.
origin: ECT
## When to Activate
- User is building ML models for financial prediction
- Constructing features from price, volume, fundamental, or alternative data
- Applying cross-sectional standardization or time-series transformations
- Performing feature selection to reduce dimensionality and multicollinearity
- Designing feature pipelines that respect temporal constraints (no leakage)
## First Questions