SentiInc: Incorporating Sentiment Information into Sentiment Transfer Without Parallel Data

Sentiment-to-sentiment transfer involves changing the sentiment of the given text while preserving the underlying information. In this work, we present a model SentiInc for sentiment-to-sentiment transfer using unpaired mono-sentiment data. Existing sentiment-to-sentiment transfer models ignore the valuable sentiment-specific details already present in the text. We address this issue by providing a simple framework for encoding sentiment-specific information in the target sentence while preserving the content information. This is done by incorporating sentiment based loss in the back-translation based style transfer. Extensive experiments over the Yelp dataset show that the SentiInc outperforms state-of-the-art methods by a margin of as large as equation ~11% in G-score. The results also demonstrate that our model produces sentiment-accurate and information-preserved sentences.

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Task Dataset Model Metric Name Metric Value Global Rank Benchmark
Text Style Transfer Yelp Review Dataset (Large) SentiInc G-Score (BLEU, Accuracy) 59.17 # 1
Text Style Transfer Yelp Review Dataset (Small) SentiInc G-Score (BLEU, Accuracy) 66.25 # 2


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