PGM Learning Notes:
LDA Gibbs Sampler - LDA01: name select LDA02: Reference: Kevin Murphy's book Ch. 27, https://github.com/wiseodd/probabilistic-models/blob/master/models/bayesian/lda_gibbs.py
LTM re-implementation - Zhao, Bo, et al. "A bayesian approach to discovering truth from conflicting sources for data integration." Proceedings of the VLDB Endowment 5.6 (2012): 550-561.