---------------------------------------------------------------------------
IndexError Traceback (most recent call last)
<ipython-input-69-fab03f1fce4e> in <module>()
----> 1 adaboost.buildStump(dataArr, labelArr, D)
/home/cavin/Documents/BookData/machinelearninginaction/Ch07/adaboost.py in buildStump(dataArr, classLabels, D)
44 predictedVals = stumpClassify(dataMatrix, i, threshVal, inequal)
45 errArr = np.mat(np.ones((m, 1)))
---> 46 errArr[predictedVals == labelMat] = 0
47 weightedError = D.T * errArr
48 print("""split: dim %d, thresh %.2f, thresh inequal:
IndexError: index 1 is out of bounds for axis 1 with size 1
P120 程序清单7-1 单层决策树生成函数
def buildStump(dataArr, classLabels, D):
...
errArr[predictedVals == labelMat] = 0
在3.6版本的anaconda下执行会提示错误：
解决方法：
errArr[predictedVals == labelMat.T] = 0
也就是把labelMat转置，出现这个错误原因是predictedVals和labelMat的shape不同导致的