評價模型質(zhì)量的指標：
https://scikit-learn.org/stable/modules/model_evaluation.html#regression-metrics
1????
variance?is the?expectation?of the squared?deviation?of a?random variable?from its?mean. In other words, it measures how far a set of numbers is spread out from their average value
2
線性回歸
3
多項式回歸 & 廣義可加模型(GAM)：
gam 每一個變量都用一個非線性函數(shù)來代替垃瞧，但是模型本身保持整體可加性
gam
生成多項式?純項 交叉項?截距項的方法
https://scikit-learn.org/stable/modules/generated/sklearn.preprocessing.PolynomialFeatures.html?highlight=poly#sklearn.preprocessing.PolynomialFeatures
5
調(diào)用pyGAM
gam
6
多元回歸的重要問題
https://zhuanlan.zhihu.com/p/109808497
f_stat
