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"They are trained on a corpora of books, articles and websites, even the entirety of English Wikipedia, but these texts rarely feature emoji."

For example, corpora, specifically the corpora used for legal corpus linguistics, contains millions of words from TV programs, magazines, and newspapers — news sources.

Publishers might strike licensing deals, of course, making their text available to large firms for inclusion in their corpora.

For most people, these two corpora are enough entertainment for a lifetime.

Linguists use machine-learning techniques for mining large text corpora to detect how the structure of a language lends meaning to its words.