随笔分类 -  Scikit-Learn

摘要：#-*- coding: utf-8 -*- import pandas as pd from random import shuffle import matplotlib.pyplot as plt #导入Matplotlib datafile = '../data/model.xls' data = pd.read_excel(datafile) data = data.as_matr... 阅读全文

摘要：#-*- coding: utf-8 -*- #构建并测试CART决策树模型 import pandas as pd #导入数据分析库 from random import shuffle #导入随机函数shuffle，用来打乱数据 import matplotlib.pyplot as plt #导入Matplotlib datafile = '../data/model.xls' #数据... 阅读全文

摘要：#-*- coding: utf-8 -*- #逻辑回归 自动建模 import numpy as np import pandas as pd from sklearn.linear_model import LogisticRegression as LR from sklearn.linear_model import RandomizedLogisticRegression as RLR... 阅读全文

摘要：#-*- coding: utf-8 -*- #主成分分析 降维 import pandas as pd #参数初始化 inputfile = '../data/principal_component.xls' outputfile = '../tmp/dimention.xls' #降维后的数据 data = pd.read_excel(inputfile, header = None) ... 阅读全文

摘要：Spyder Ctrl + 4/5: 块注释/块反注释 本文总结的是我们大家在python中常见的数据预处理方法，以下通过sklearn的preprocessing模块来介绍; 1. 标准化（Standardization or Mean Removal and Variance Scaling) 阅读全文