Simple, Efficient and Neural Algorithms for Sparse Coding

[@noDiffe]

Like for online update rule. Correction, at first slide it is not a dictionary for sparse coding, but principal components calculated from the image patches

[@SmirkInvestigator]

What is this notation? What kind of math is this and what textbooks should I comb through?

[@MattyHild]

statistical machine learning. Look up andrew NG. specifically unsupervised learning.

[@wasaamhazm]

How extract higher level features from stack auto encoder i need explain with example