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- W4328114449 abstract "Abstract Most existing deep learning-based sentiment classification methods need large human-annotated data, but labeling large amounts of high-quality emotional texts is labor-intensive. Users on various social platforms generate massive amounts of tagged opinionated text (e.g., tweets, customer reviews), providing a new resource for training deep models. However, some of the tagged instances have sentiment tags that are diametrically opposed to their true semantics. We cannot use this tagged data directly because the noisy labeled instances have a negative impact on the training phase. In this paper, we present a novel Simple Weakly-supervised Contrastive Learning framework (SWCL). We use the contrastive learning strategy to pre-train the deep model on the large user-tagged data (referred to as weakly-labeled data) and then the pre-trained model is fine-tuned on the small human-annotated data. We refine the contrastive loss function to better exploit inter-class contrastive patterns, making contrastive learning more applicable to the weakly-supervised setting. Besides, multiple sampling on different sentiment pairs reduces the negative impact of label noises. SWCL captures the diverse sentiment semantics of weakly labeled data and improves their suitability for downstream sentiment classification tasks. Our method outperforms the other baseline methods in experiments on the Amazon review, Twitter, and SST-5 datasets. Even when fine-tuned on 0.5 percent of the training data (i.e. 32 instances), our framework significantly boosts the deep models’ performance, demonstrating its robustness in a few-shot learning scenario." @default.
- W4328114449 created "2023-03-22" @default.
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- W4328114449 date "2023-03-21" @default.
- W4328114449 modified "2023-09-25" @default.
- W4328114449 title "A Simple Weakly-Supervised Contrastive Learning Framework for Few-shot Sentiment Classification" @default.
- W4328114449 doi "https://doi.org/10.21203/rs.3.rs-2699220/v1" @default.
- W4328114449 hasPublicationYear "2023" @default.
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