Machine Learning, Gradient Descent, Stochastic Gradient, Batch Gradient Descent, Regression.
in 3-D. When we choose (1,1), we choose the cost function at (1,1) and take a step in the direction of negative gradient. Then we choose (3,4) and its cost function and take a step, and so on. We use batch gradient descent to find a best fit of parameters for the whole data in one go, which uses