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Don’t Just Translate, Summarize Too: Cross-lingual Product Title Generation in E-commerce

Making product titles informative and concise is vital to delighting e-commerce customers. Recent advances have successfully applied monolingual product title summarization to shorten lengthy product titles. This paper explores the cross-lingual product title generation task that summarizes and translates the source language product title to a shortened product title in the target language. Our main contributions are as follows, (i) we investigate the optimal product title length within the scope of e-commerce localization, (ii) we introduce a simple yet effective data filtering technique to train a length-aware machine translation system and compare it to a publicly available LLM, (iii) we propose an automatic approach to validate experimental results using an open-source LLM without human input and show that these evaluation results are consistent with human preferences.