树回归

Regression Trees/regTrees.py

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+#-*- coding:utf-8 -*-
+import numpy as np
+
+def loadDataSet(fileName):
+    """
+    函数说明:加载数据
+    Parameters:
+        fileName - 文件名
+    Returns:
+		dataMat - 数据矩阵
+    Website:
+        http://www.cuijiahua.com/
+    Modify:
+        2017-12-09
+    """
+    dataMat = []
+    fr = open(fileName)
+    for line in fr.readlines():
+        curLine = line.strip().split('\t')
+        fltLine = list(map(float, curLine))					#转化为float类型
+        dataMat.append(fltLine)
+    return dataMat
+
+if __name__ == '__main__':
+	print(loadDataSet('ex00.txt'))