From dba5d710c5c2aa6b89affc9c2a84ccef6383e1f2 Mon Sep 17 00:00:00 2001
From: wit-df <weixin_44199684@gitcode.net>
Date: Mon, 3 Jul 2023 16:25:21 +0800
Subject: [PATCH] =?UTF-8?q?=E5=88=A0=E9=99=A4=20linear=5Fregression.py?=
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---
 linear_regression.py | 32 --------------------------------
 1 file changed, 32 deletions(-)
 delete mode 100644 linear_regression.py

diff --git a/linear_regression.py b/linear_regression.py
deleted file mode 100644
index 429036d..0000000
--- a/linear_regression.py
+++ /dev/null
@@ -1,32 +0,0 @@
-import numpy as np
-
-# 线性回归（正规方程法）
-class LinearRegression_Equation:
-    # 根据公式计算w，是n*1的2维矩阵
-    def fit(self, X, y):
-        self.w = np.linalg.inv(X.T.dot(X)).dot(X.T).dot(y)
-    
-    # 根据公式(4.1)计算预测结果，是m*1的2维矩阵
-    def predict(self, X):
-        return X.dot(self.w)
-
-# 线性回归（梯度下降法）
-class LinearRegression_GD:
-    def __init__(self,
-        N = 1000,           # 训练轮数
-        lr = 0.01           # 学习率
-        ) -> None:
-        self.N = N
-        self.lr = lr
-    
-    def fit(self, X, y):
-        m, n = X.shape
-        w = np.zeros((n, 1))
-        y = y.reshape(-1, 1)
-        for _ in range(self.N):
-            gradient = 1 / m * X.T.dot(X.dot(w) - y)
-            w -= self.lr * gradient
-        self.w = w
-    
-    def predict(self, X):
-        return X.dot(self.w)
\ No newline at end of file
-- 
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