A Japanese-Chinese Parallel Corpus Using Crowdsourcing for Web Mining

• URL: http://arxiv.org/abs/2405.09017v1
• Date: Wed, 15 May 2024 00:54:40 GMT
• Title: A Japanese-Chinese Parallel Corpus Using Crowdsourcing for Web Mining
• Authors: Masaaki Nagata, Makoto Morishita, Katsuki Chousa, Norihito Yasuda,
• Abstract summary: We created a Japanese-Chinese parallel corpus of 4.6M sentence pairs from bilingual websites. We used a Japanese-Chinese bilingual dictionary of 160K word pairs for document and sentence alignment. We compared the translation accuracy of the model trained on these 4.6M sentence pairs with that of the model trained on Japanese-Chinese sentence pairs from CCMatrix (12.4M), a parallel corpus from global web mining.
• Score: 20.18032411452028
• License: http://creativecommons.org/licenses/by-sa/4.0/
• Abstract: Using crowdsourcing, we collected more than 10,000 URL pairs (parallel top page pairs) of bilingual websites that contain parallel documents and created a Japanese-Chinese parallel corpus of 4.6M sentence pairs from these websites. We used a Japanese-Chinese bilingual dictionary of 160K word pairs for document and sentence alignment. We then used high-quality 1.2M Japanese-Chinese sentence pairs to train a parallel corpus filter based on statistical language models and word translation probabilities. We compared the translation accuracy of the model trained on these 4.6M sentence pairs with that of the model trained on Japanese-Chinese sentence pairs from CCMatrix (12.4M), a parallel corpus from global web mining. Although our corpus is only one-third the size of CCMatrix, we found that the accuracy of the two models was comparable and confirmed that it is feasible to use crowdsourcing for web mining of parallel data.

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