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Aspect-based sentiment analysis (ABSA) task aims to associate a piece of text with a set of aspects and meanwhile infer their respective sentimental polarities. Up to now, the state-of-the-art approaches are built upon fine-tuning of various pre-trained language models. They commonly aim to learn the aspect-specific representation in the corpus. Unfortunately, the aspect is often expressed implicitly through a set of representatives and thus renders implicit mapping process unattainable unlessarXiv:2203.11702v1 fatcat:re2ibha7crfzxi4ospnfb7is6a