Bejan, Cosmin
Nonparametric Bayesian Models for Unsupervised Event Coreference Resolution
Bejan, Cosmin, Titsworth, Matthew, Hickl, Andrew, Harabagiu, Sanda
We present a sequence of unsupervised, nonparametric Bayesian models for clustering complex linguistic objects. In this approach, we consider a potentially infinite number of features and categorical outcomes. We evaluate these models for the task of within- and cross-document event coreference on two corpora. All the models we investigated show significant improvements when compared against an existing baseline for this task.