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Update FM_train.py
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Chapter_3 Factorization Machine/FM_train.py

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@@ -34,7 +34,7 @@ def sigmoid(inx):
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def initialize_v(n, k):
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'''初始化交叉项
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input: n(int)特征的个数
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k(int)FM模型的度
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k(int)FM模型的交叉向量维度
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output: v(mat):交叉项的系数权重
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'''
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v = np.mat(np.zeros((n, k)))

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