The Multilingual Amazon Reviews Corpus
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Abstract (arXiv)
We present the Multilingual Amazon Reviews Corpus (MARC), a large-scale collection of Amazon reviews for multilingual text classification. The corpus contains reviews in English, Japanese, German, French, Spanish, and Chinese, which were collected between 2015 and 2019. Each record in the dataset contains the review text, the review title, the star rating, an anonymized reviewer ID, an anonymized product ID, and the coarse-grained product category (e.g., 'books', 'appliances', etc.) The corpus is balanced across the 5 possible star ratings, so each rating constitutes 20% of the reviews in each language. For each language, there are 200,000, 5,000, and 5,000 reviews in the training, development, and test sets, respectively. We report baseline results for supervised text classification and zero-shot cross-lingual transfer learning by fine-tuning a multilingual BERT model on reviews data. We propose the use of mean absolute error (MAE) instead of classification accuracy for this task, since MAE accounts for the ordinal nature of the ratings.
Key facts. Cited by 142 papers in the map (data through 7 Oct 2026). First posted on arXiv 6 Oct 2020.
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Citing papers per year: 2021: 5; 2022: 28; 2023: 43; 2024: 38; 2025: 20; 2026: 8.
142 papers.
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- 2026To MRL or not to MRL: Text Embeddings are Robust to Truncation Without Matryoshka Learning, Except In Heavy Truncation Scenarios15 May 2026
- 2026LLM-Augmented Semantic Steering of Text Embedding Projection Spaces3 May 2026
- 2026ShadowPEFT: Shadow Network for Parameter-Efficient Fine-Tuning21 Apr 2026
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