Align a new corpus to a fitted model's vocabulary

Maps a new corpus's terms onto the term indices of a fitted faSTM model, dropping out-of-vocabulary terms — the preprocessing needed before inferring topics for new documents (cf. stm::alignCorpus).

Usage

align_corpus(newdata, model)

Arguments

newdata

A faSTM_corpus, quanteda dfm, or document-term matrix.

model

A faSTM fit.

Value

A list with per-document ids (0-based indices into model$vocab) and counts, plus dropped (count of out-of-vocabulary term tokens).