为了使用Python实现多元线性回归的模型,我们首先要了解多元线性回归模型(multivariable linear regression model )的基本信息,解释它的构成、了解它的数学原理以及我们如何通过一系列数据得到我们需要的模型。 其次,我们需要了解评估一个线性模型好坏的标准,也就是我们的损失函数(loss function)或者称为代价函数(cost function...
How to find the gradient of a function So, how do you find the gradient of a function? For single variable functions like f(x) = x ** 2, the gradient is the derivative of the function, which is given as a vector with one element - [2x]. For multivariable functions like f(x1,...
24:01 069 Understanding Multivariable Regression06:08 070 How to Shuffle and Split Training & Testing Data 10:22 071 Runninga Multivariable Regression 08:43 072 How toCalculate the Model Fit with R-Squared 04:21 073 Introductionto Model Evaluation 02:40 074 Improving Model by Transforming...
So, how do you find the gradient of a function? For single variable functions likef(x) = x ** 2, the gradient is the derivative of the function, which is given as a vector with one element -[2x]. For multivariable functions likef(x1, x2) = x1 ** 3 - x2 ** 2, the gradien...