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@@ -251,7 +251,7 @@ def regression1():
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#test for LWLR
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def regression2():
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xArr, yArr = loadDataSet("testData/Regression_data.txt")
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xArr, yArr = loadDataSet("input/08.Regression/data.txt")
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yHat = lwlrTest(xArr, xArr, yArr, 0.003)
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xMat = mat(xArr)
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srtInd = xMat[:,1].argsort(0) #argsort()函数是将x中的元素从小到大排列,提取其对应的index(索引),然后输出
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@@ -265,7 +265,7 @@ def regression2():
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#test for ridgeRegression
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def regression3():
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abX,abY = loadDataSet("testData/Regression_abalone.txt")
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abX,abY = loadDataSet("input/08.Regression/abalone.txt")
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ridgeWeights = ridgeTest(abX, abY)
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fig = plt.figure()
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ax = fig.add_subplot(111)
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@@ -275,7 +275,7 @@ def regression3():
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#test for stageWise
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def regression4():
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xArr,yArr=loadDataSet("testData/Regression_abalone.txt")
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xArr,yArr=loadDataSet("input/08.Regression/abalone.txt")
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stageWise(xArr,yArr,0.01,200)
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xMat = mat(xArr)
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yMat = mat(yArr).T
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@@ -289,4 +289,4 @@ if __name__ == "__main__":
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# regression1()
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regression2()
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# regression3()
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# regression4()
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# regression4()
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