I'm majoring industrial engineering on a master's course. Recently, I've realized that I need to study statistical perspective on M.L.
So I'm studying the book Introduction to statistical learning with myself. But it seems to lack of mathematical background. On the other hand, Element of statistical learning is too hard for me so I barely understand it.
Can you have any recommendation just middle of ESL and ISLR?: which includes richly and kindly explanations on math and statistics?