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- W4288255027 abstract "Text attributes, such as user and product information in product reviews, have been used to improve the performance of sentiment classification models. The de facto standard method is to incorporate them as additional biases in the attention mechanism, and more performance gains are achieved by extending the model architecture. In this paper, we show that the above method is the least effective way to represent and inject attributes. To demonstrate this hypothesis, unlike previous models with complicated architectures, we limit our base model to a simple BiLSTM with attention classifier, and instead focus on how and where the attributes should be incorporated in the model. We propose to represent attributes as chunk-wise importance weight matrices and consider four locations in the model (i.e., embedding, encoding, attention, classifier) to inject attributes. Experiments show that our proposed method achieves significant improvements over the standard approach and that attention mechanism is the worst location to inject attributes, contradicting prior work. We also outperform the state-of-the-art despite our use of a simple base model. Finally, we show that these representations transfer well to other tasks. Model implementation and datasets are released here: https://github.com/rktamplayo/CHIM." @default.
- W4288255027 created "2022-07-28" @default.
- W4288255027 creator A5009993083 @default.
- W4288255027 date "2019-08-26" @default.
- W4288255027 modified "2023-10-17" @default.
- W4288255027 title "Rethinking Attribute Representation and Injection for Sentiment Classification" @default.
- W4288255027 doi "https://doi.org/10.48550/arxiv.1908.09590" @default.
- W4288255027 hasPublicationYear "2019" @default.
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