video traking–andrew ng: machine learningg

Video one

• what is machine learning
• supervised and unsupervised learning
• regression and classification problem
• clustering problem

Video two

• what is a linear regression problem
• what is contour plots/figures
• what is a cost function
• how is gradient descent algorithm defined

so here’s my rundown of the questions above

• what is a linear regression problem

A regression problem is a concept that goes against the classification problem. The former predicts a real value, while the latter predicts a limited set of discrete value. And a linear regression maps a single feature $x$ to a single value $y$. And the function that does the mapping(technical term $hypothesis$ function) can be represented by $h=​$