Machine Learning, Artificial Intelligence, Statistics, Math, Mathematics.
https://math.stackexchange.com/questions/1646008/derivative-of-l-1-norm Matrix Theorems . (2018). Stattrek.com. Retrieved 31 August 2018, from https://stattrek.com/matrix-algebra/matrix-theorems.aspx analysis?, W. (2018). What is the relationship between independent component analysis and factor