¿Qué es Dictionary method, sentiment score, document embedding?

A dictionary method scores a document by counting the words it contains from fixed word lists. A sentiment score is such a measure of tone, for instance the share of negative words, or negative minus positive words over all words. A document embedding maps a document to a vector of real numbers (word counts weighted by rarity, or the output of a trained language model) so that documents with similar content have nearby vectors.