(2012), to detect novel senses of a target word using this WSI method, we jointly topic model two corpora: a reference corpus -taken to represent standard usage -and a focus corpus of newer texts potentially containing novel senses.
we extract usages of a target word w from both corpora, and then topic model the pooled instances of w. Under this approach, the discovered topics are applicable to both corpora, so there is no need to reconcile two different sets of topics.