Rethinking Attribute Representation and Injection for Sentiment Classification (D19-1)
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| Challenge: | Existing models that use text attributes to improve sentiment classification use text as a categorical feature. |
| Approach: | They propose to represent attributes as chunk-wise importance weight matrices and consider four locations to inject attributes. |
| Outcome: | The proposed method outperforms the state-of-the-art and outperformed previous models. |
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Effective Attention Modeling for Aspect-Level Sentiment Classification (C18-1)
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| Challenge: | Aspect-level sentiment classification aims to determine sentiment polarity of review sentence towards opinion target . main challenge is to separate different opinion contexts for different targets . |
| Approach: | They propose a method that captures the semantic meaning of the opinion target and a model that incorporates syntactic information into the attention mechanism. |
| Outcome: | The proposed method captures the semantic meaning of the opinion target and incorporates syntactic information into the attention mechanism. |
Exploiting Rich Textual User-Product Context for Improving Personalized Sentiment Analysis (2023.findings-acl)
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| Challenge: | Typical approaches do not exploit the potential of historical reviews or do not make full use of user/product associations. |
| Approach: | They propose to use historical reviews to initialize user and product representations and incorporate textual associations via a user-product cross-context module. |
| Outcome: | The proposed method outperforms existing state-of-the-art models on IMDb, Yelp and Longformer benchmarks. |
Aspect-Based Sentiment Analysis as Fine-Grained Opinion Mining (2020.lrec-1)
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| Challenge: | a large body of research has been done on aspect-based sentiment analysis (ABSA) for almost two decades . aspect-Based sentiment analysis is a task that extracts sentiment/opinions from text in terms of targets . |
| Approach: | They propose a meaning-preserving annotation scheme for aspect-based sentiment analysis . they then apply it to two popular ABSA datasets to examine their results . |
| Outcome: | The proposed approach improves the state of aspect-based sentiment analysis (ABSA) by preserving the meaning of the sentiment. |
Cold-Start Aware User and Product Attention for Sentiment Classification (P18-1)
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| Challenge: | Existing models do not deal with cold-start problem typical in review websites. |
| Approach: | They propose a Hybrid Contextualized Sentiment Classifier that uses word encoder and Cold-Start Aware Attention to pool word vectors. |
| Outcome: | The proposed model performs significantly better on famous datasets despite having less complexity and can be trained much faster. |
Improving Document-Level Sentiment Analysis with User and Product Context (2020.coling-main)
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| Challenge: | Existing work that improves document-level sentiment analysis by encoding user and product information has been limited to considering only the text of the current review. |
| Approach: | They propose to incorporate all available historical review text belonging to the author of the review in question and investigate the inclusion of his- torical reviews associated with the current product. |
| Outcome: | The proposed model improves on IMDB, Yelp 2013 and Yelpan 2014 datasets by more than 2 percentage points in the best case. |
MA-BERT: Learning Representation by Incorporating Multi-Attribute Knowledge in Transformers (2021.findings-acl)
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| Challenge: | Existing methods for incorporating external attribute knowledge into deep neural networks are concatenating multiple attributes to word/text representation or treating them as biases to adjust attention distribution. |
| Approach: | They propose a multi-attribute BERT to incorporate external attribute knowledge into deep neural networks. |
| Outcome: | The proposed method outperforms existing models and models on three benchmark datasets. |
If you’ve got it, flaunt it: Making the most of fine-grained sentiment annotations (2021.eacl-main)
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| Challenge: | a recent study shows that annotating sentiments is difficult and difficult. |
| Approach: | They propose to integrate holder and expression information into sentiment analysis to improve target extraction . they perform experiments on eight English datasets to determine whether annotating expressions improves target extraction. |
| Outcome: | The proposed approach improves target extraction and classification on English datasets. |
Improving Multi-label Emotion Classification via Sentiment Classification with Dual Attention Transfer Network (D18-1)
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| Challenge: | Existing approaches to emotion detection are lexicon-based, graphical model-based and linear classifier-based. |
| Approach: | They propose a transfer learning architecture to divide sentence representation into two different feature spaces which capture general sentiment words and other important emotion-specific words via a dual attention mechanism. |
| Outcome: | The proposed model can capture general sentiment words and other emotion-specific words via a dual attention mechanism on two benchmark datasets. |
CHEER-Ekman: Fine-grained Embodied Emotion Classification (2025.acl-short)
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| Challenge: | Emotions manifest through physical experiences and bodily reactions, yet identifying such embodied emotions in text remains understudied. |
| Approach: | They propose to extend existing binary embodied emotion dataset with Ekman’s six basic emotion categories. |
| Outcome: | The proposed dataset outperforms existing methods with large language models. |
Attribute Alignment: Controlling Text Generation from Pre-trained Language Models (2021.findings-emnlp)
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| Challenge: | Large language models can generate text with sentiment polarity or specific topics without changing the original model parameters. |
| Approach: | They propose a method for controlling text generation by aligning disentangled attribute representations. |
| Outcome: | The proposed method shows large performance gains while maintaining diversity and fluency. |