# Probabilistic Matrix Factorization Tutorial

Probabilistic latent semantic analysis. Highly similar to UCSD's 'CSE 250B. The p-bit fluctuates probabilistically between 0 and 1, and can be pinned to one or the other state based on the magnitude and sign of its input. 5- Matrix Factorization: A Simple Tutorial and Implementation in Python. The inductive step is important. Singular value decomposition (SVD) is a means of decomposing a a matrix into a product of three simpler matrices. Non-Negative Matrix Factorization " Data V # ˇ "Basis Vectors W #" Weights H # A matrix factorization where everything is non-negative V 2RF T + - original non-negative data W 2RF K + - matrix of basis vectors, dictionary elements H 2RK T + - matrix of activations, weights, or gains K