ParaCotta: Synthetic Multilingual Paraphrase Corpora from the Most Diverse Translation Sample Pair

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We release our synthetic parallel paraphrase corpus across 17 languages: Arabic, Catalan, Czech, German, English, Spanish, Estonian, French, Hindi, Indonesian, Italian, Dutch, Romanian, Russian, Swedish, Vietnamese, and Chinese.

• Our method relies only on monolingual data and a neural machine translation system to generate paraphrases, hence simple to apply.
• We generate multiple translation samples using beam search and choose the most lexically diverse pair according to their sentence BLEU.
• We compare our generated corpus with the \texttt{ParaBank2}.