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• W3091996431 abstract "Aspect based sentiment analysis, predicting sentiment polarity of given aspects, has drawn extensive attention. Previous attention-based models emphasize using aspect semantics to help extract opinion features for classification. However, these works are either not able to capture opinion spans as a whole, or not able to capture variable-length opinion spans. In this paper, we present a neat and effective structured attention model by aggregating multiple linear-chain CRFs. Such a design allows the model to extract aspect-specific opinion spans and then evaluate sentiment polarity by exploiting the extracted opinion features. The experimental results on four datasets demonstrate the effectiveness of the proposed model, and our analysis demonstrates that our model can capture aspect-specific opinion spans." @default.
• W3091996431 created "2020-10-15" @default.
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• W3091996431 date "2020-10-06" @default.
• W3091996431 modified "2023-09-27" @default.
• W3091996431 title "Aspect Sentiment Classification with Aspect-Specific Opinion Spans" @default.
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• W3091996431 hasPublicationYear "2020" @default.
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