Anchor Words Algorithm

Spectral methods offer scalable alternatives to Markov chain Monte Carlo and expec- tation maximization. However, these new methods lack the rich priors associated with probabilistic models. We examine Arora et …...

The anchor words algorithm performs provably efficient topic model inference by finding an approximate convex hull in a high-dimensional word co-occurrence space. However, the existing greedy al- gorithm often selects …...