Name: WikiMatrix
Description: t 135M parallel sentences for
  1620 different language pairs, out of which
  only 34M are aligned with English
Provider: JHU, Facebook
Paper Title: WikiMatrix: Mining 135M Parallel Sentences
  in 1620 Language Pairs from Wikipedia
Tasks: machine translation
Venue Name: European Chapter of the Association for Computational Linguistics
Authors: Holger Schwenk,Vishrav Chaudhary,Shuo Sun,Hongyu Gong,Francisco Guzmán
Abstract: We present an approach based on multilingual sentence embeddings to automatically extract parallel sentences from the content of Wikipedia articles in 96 languages, including several dialects or low-resource languages. We do not limit the extraction process to alignments with English, but we systematically consider all possible language pairs. In total, we are able to extract 135M parallel sentences for 16720 different language pairs, out of which only 34M are aligned with English. This corpus is freely available. To get an indication on the quality of the extracted bitexts, we train neural MT baseline systems on the mined data only for 1886 languages pairs, and evaluate them on the TED corpus, achieving strong BLEU scores for many language pairs. The WikiMatrix bitexts seem to be particularly interesting to train MT systems between distant languages without the need to pivot through English.