Note | Batch Gradient Descent Algorithm

Overview In the linear regression prediction, we want to find a hypothesis function to predict the future outcome. The method in supervised learning is by using loads of training data sets and a learning algorithm to let the result of the hypothesis function close to the real value as possible as we can. ...

March 14, 2021 路 5 min 路 873 words 路 Wenbo

Note | Eigenvector and Eigenvalue Review

Basic Method When learning the eigenvalue and eigenvector, we are commonly given an equation at the beginning $$ AX = \lambda X \tag{1} $$ Where A is the matrix X is the eigenvector $\lambda$ is the eigenvalue Take an example Q: Find the eigenvalues and eigenvectors of the matrix $$ A = \begin{bmatrix} 1&1&-2\ -1&2&1\ 0&1&-1 \end{bmatrix} $$ A: To get the answer, firstly apply the equation (1) : $$ AX = \lambda X \tag{1} $$ ...

March 13, 2021 路 2 min 路 379 words 路 Wenbo