小编邀请您，先思考：
1 特征工程是什么？如何做特征工程？
Feature engineering is the process of transforming raw data into features that better represent the underlying problem to the predictive models, resulting in improved model accuracy on unseen data.
Feature engineering is manually designing what the input x’s should be.
资料：
https://machinelearningmastery.com/discover-feature-engineering-how-to-engineer-features-and-how-to-get-good-at-it/
