generated from LufsX/Experiment-LogReg
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-4
@@ -101,12 +101,12 @@ def predict_logreg(inX, weights):
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Returns:
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Returns:
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- int: 预测的分类标签。
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- int: 预测的分类标签。
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"""
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"""
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# 确保输入样本的特征数量与训练时一致
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# 确保输入样本是二维数组
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if inX.shape[0] != weights.shape[0] - 1:
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if inX.ndim == 1:
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raise ValueError("输入样本的特征数量与训练时不一致")
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inX = inX.reshape(1, -1) # 将一维数组转换为二维数组
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# 添加偏置项
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# 添加偏置项
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inX = np.insert(inX, 0, 1, axis=1) # 在特征向量的开头插入偏置项
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inX = np.hstack([np.ones((inX.shape[0], 1)), inX]) # 在特征向量的开头添加偏置项
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z = np.dot(inX, weights)
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z = np.dot(inX, weights)
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y_pred = 1 / (1 + np.exp(-z))
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y_pred = 1 / (1 + np.exp(-z))
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return 1 if y_pred > 0.5 else 0
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return 1 if y_pred > 0.5 else 0
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