In a July 6, 2022 Facebook post, Zuckerberg explained why Meta AI’s recent No Language Left Behind (NLLB) project merits attention. Specifically, Meta AI tweeted, the company built an AI model capable of translating between 200 languages — for a total of 40,000 different translation directions. The authors reported that their model achieved a 44% improvement in BLEU, thus “laying important groundwork towards realizing a universal translation system.” But, as to be expected, improvement was not uniform across language pairs, with little to no improvement for pairs such as Armenian into English or French into Wolof.

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