TfidfVectorizer函数主要用于,将文档(句子)等通过 tf-idf值来进行表示,也就是用一个tf-idf值的矩阵来表示文档(句子也可). from sklearn.feature_extraction.text import TfidfVectorizer 1. 其函数源代码很长,这里只展示: class TfidfVectorizer(CountVectorizer): """Convert a collection of raw documents to a…
sklearn.linear_model.LinearRegression.score score(self, X, y, sample_weight=None) Returns the coefficient of determination R^2 of the prediction. The coefficient R^2 is defined as (1 - u/v), where u is the residual sum of squares ((y_true - y_pred) *…