摘要：
import pandas as pd import numpy as np import matplotlib.pyplot as plt # 准备数据 data = pd.read_csv("./digit recognizor.csv") x = data.iloc[:,1:] # 特征矩阵 阅读全文
摘要：
import pandas as pd data = pd.read_csv("./digit recognizor.csv") x = data.iloc[:,1:] y = data.iloc[:,0] x.shape (42000, 784) 方差过滤 VarianceThreshold fr 阅读全文
摘要：
二值化与分段 sklearn.preprocessing.Binarizer from sklearn.preprocessing import Binarizer import pandas as pd data = pd.read_csv("./data_full", index_col=0) 阅读全文
摘要：
处理缺失值 import pandas as pd import numpy as np df = pd.read_csv("./Narrativedata.csv", index_col=0) df.info() <class 'pandas.core.frame.DataFrame'> Int6 阅读全文