From 8b8f14440f8761a26c4a761f11a1e64c0741c8cf Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=90=B4=E6=9D=A8=E6=B4=8B?= <2445091977@qq.com>
Date: Sat, 2 Nov 2024 21:43:52 +0800
Subject: [PATCH] =?UTF-8?q?=E6=9B=B4=E6=96=B0=20function.py?=
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---
 function.py | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/function.py b/function.py
index 85844f4..7353415 100644
--- a/function.py
+++ b/function.py
@@ -4,8 +4,7 @@ id = "202210423224"
 name = "吴杨洋"
 
 def sigmoid(z):
-    z = np.clip(z, -500, 500)  # 限制 z 的值范围以避免溢出
-    return 1 / (1 + np.exp(-z))
+    return 1 / (1 + np.exp(-np.clip(z, -500, 500)))
 
 def train_logreg(X, y, numIter=1000, learning_rate=0.01, lambda_reg=0.01, batch_size=64):
     m, n = X.shape
@@ -55,8 +54,7 @@ def load_data(filepath):
     data_number = len(y)
     y_train = np.array([1 if y[j] == '2' or y[j] == '3' else 0 for j in range(data_number)])
     X = np.array(data_list)
-    X_train = np.insert(X, 0, 1, axis=1)  # 添加偏置项
-    return X_train, y_train
+    return X, y_train
 
 def standardize(X):
     mean = X.mean(axis=0)