(2012a) chose the C that minimizes the KL divergence betweenQ i,• and the reconstruction based on the anchor word's conditional word vec- (3) The anchor method is fast, as it only depends on the size of the vocabulary once the cooccurrence statistics Q are obtained.
it does not support rich priors for topic models, while MCMC (Griffiths and Steyvers, 2004) and variational EM (Blei et al., 2003) methods can.