SPRITE: Generalizing Topic Models with Structured Priors

Michael Paul, Mark Dredze
We introduce SPRITE, a family of topic models that incorporates structure into model priors as a function of underlying components. The structured priors can be constrained to model topic hierarchies, factorizations, correlations, and supervision , allowing SPRITE to be tailored to particular settings. We demonstrate this flexibility by constructing a SPRITE-based model to jointly infer topic hierarchies and author perspective, which we apply to corpora of political debates and online reviews.
more » ... e show that the model learns intuitive topics, outperforming several other topic models at predictive tasks.