更新 function.py
Gitea Actions Experiment Test / Experiment-Actions (push) Failing after 1m10s

This commit is contained in:
2024-11-03 19:41:29 +08:00
parent dccd1b0850
commit 956b168eef
+25 -6
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@@ -21,12 +21,14 @@ import numpy as np
"""
请在这里填写学号和姓名,不填写即成绩无效。
"""
id = "202210423xxx"
name = "test_name"
id = "202210423108"
name = "雷武"
# 这里写自己的代码实现
def train_logreg(X, y, other_params="你自己设置一些其它参数"):
def sigmoid(z):
return 1 / (1 + np.exp(-z))
def train_logreg(X, y, learning_rate=0.01, iterations=1000):
"""
对率回归训练函数。
@@ -38,9 +40,21 @@ def train_logreg(X, y, other_params="你自己设置一些其它参数"):
Returns:
- numpy array: 训练得到的权重。
"""
m, n = X.shape
weights = np.zeros(n)
bias = 0
for i in range(iterations):
linear_model = np.dot(X, weights) + bias
y_pred = sigmoid(linear_model)
dw = (1 / m) * np.dot(X.T, (y_pred - y))
db = (1 / m) * np.sum(y_pred - y)
def predict_logreg(inX, weights):
weights -= learning_rate * dw
bias -= learning_rate * db
return weights, bias
def predict_logreg(inX, weights, bias):
"""
对率回归预测函数。
@@ -51,7 +65,9 @@ def predict_logreg(inX, weights):
Returns:
- int: 预测的分类标签。
"""
linear_model = np.dot(inX, weights) + bias
y_pred = sigmoid(linear_model)
return 1 if y_pred >= 0.5 else 0
# 这里也写自己的代码实现
def load_data(filepath):
@@ -65,7 +81,10 @@ def load_data(filepath):
- np.array: 特征数据。
- np.array: 标签数据。
"""
data = np.loadtxt(filepath, delimiter=',')
X = data[:, :-1]
y = data[:, -1].astype(int)
return X, y
if __name__ == "__main__":
# 以下代码可用于测试,可自行随意修改