更新 function.py
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This commit is contained in:
2024-10-29 08:39:05 +08:00
parent 889f4909b2
commit 3ceac3241d
+14 -3
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@@ -50,10 +50,21 @@ def train_logreg(X, y, learning_rate=0.01, iterations=1000, regularization=0.0):
return weights, bias return weights, bias
def predict_logreg(inX, weights): def predict_logreg(inX, weights, bias):
# 确保 inX 是一维数组
if inX.ndim == 2 and inX.shape[1] == 1:
inX = inX.flatten()
elif inX.ndim > 1:
raise ValueError("Input data should be one-dimensional or a column vector.")
# 计算线性输出
linear_output = np.dot(inX, weights) + bias linear_output = np.dot(inX, weights) + bias
y_predicted = 1 if linear_output >= 0 else 0 # 简化判断条件,因为逻辑回归输出已经通过sigmoid函数处理
return y_predicted # 应用sigmoid函数(如果需要的话)
# sigmoid_output = 1 / (1 + np.exp(-linear_output))
# 这里可以返回线性输出或sigmoid输出,取决于您的需求
return linear_output
# 这里也写自己的代码实现 # 这里也写自己的代码实现
def load_data(filepath): def load_data(filepath):