更新 function.py

2024-11-02 21:40:08 +08:00
parent 8e9a0a3b29
commit d9b6dd8180
1 changed files with 1 additions and 2 deletions
@@ -4,8 +4,7 @@ id = "202210423224"
 name = "吴杨洋"
 def sigmoid(z):
-    """Sigmoid 激活函数，添加 clipping 防止溢出"""
+    z = np.clip(z, -500, 500)  # 限制 z 的值范围以避免溢出
    z = np.clip(z, -500, 500)  # 限制 z 的值范围
    return 1 / (1 + np.exp(-z))
 def train_logreg(X, y, numIter=1000, learning_rate=0.01, lambda_reg=0.01, batch_size=64):