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• W2807389917 abstract "Sentiment classification typically relies on a large amount of labeled data. In practice, the availability of labels is highly imbalanced among different languages, e.g., more English texts are labeled than texts in any other languages, which creates a considerable inequality in the quality of related information services received by users speaking different languages. To tackle this problem, cross-lingual sentiment classification approaches aim to transfer knowledge learned from one language that has abundant labeled examples (i.e., the source language, usually English) to another language with fewer labels (i.e., the target language). The source and the target languages are usually bridged through off-the-shelf machine translation tools. Through such a channel, cross-language sentiment patterns can be successfully learned from English and transferred into the target languages. This approach, however, often fails to capture sentiment knowledge specific to the target language, and thus compromises the accuracy of the downstream classification task. In this paper, we employ emojis, which are widely available in many languages, as a new channel to learn both the cross-language and the language-specific sentiment patterns. We propose a novel representation learning method that uses emoji prediction as an instrument to learn respective sentiment-aware representations for each language. The learned representations are then integrated to facilitate cross-lingual sentiment classification. The proposed method demonstrates state-of-the-art performance on benchmark datasets, which is sustained even when sentiment labels are scarce." @default.
• W2807389917 created "2018-06-13" @default.
• W2807389917 creator A5031457464 @default.
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• W2807389917 creator A5091003789 @default.
• W2807389917 date "2018-06-07" @default.
• W2807389917 modified "2023-09-23" @default.
• W2807389917 title "Emoji-Powered Representation Learning for Cross-Lingual Sentiment Classification" @default.
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• W2807389917 doi "https://doi.org/10.48550/arxiv.1806.02557" @default.
• W2807389917 hasPublicationYear "2018" @default.
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