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- W4378464973 abstract "Dialogue systems are frequently updated to accommodate new services, but naively updating them by continually training with data for new services in diminishing performance on previously learnt services. Motivated by the insight that dialogue state tracking (DST), a crucial component of dialogue systems that estimates the user's goal as a conversation proceeds, is a simple natural language understanding task, we propose reformulating it as a bundle of granular example-guided question answering tasks to minimize the task shift between services and thus benefit continual learning. Our approach alleviates service-specific memorization and teaches a model to contextualize the given question and example to extract the necessary information from the conversation. We find that a model with just 60M parameters can achieve a significant boost by learning to learn from in-context examples retrieved by a retriever trained to identify turns with similar dialogue state changes. Combining our method with dialogue-level memory replay, our approach attains state of the art performance on DST continual learning metrics without relying on any complex regularization or parameter expansion methods." @default.
- W4378464973 created "2023-05-27" @default.
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- W4378464973 date "2023-05-23" @default.
- W4378464973 modified "2023-09-25" @default.
- W4378464973 title "Continual Dialogue State Tracking via Example-Guided Question Answering" @default.
- W4378464973 doi "https://doi.org/10.48550/arxiv.2305.13721" @default.
- W4378464973 hasPublicationYear "2023" @default.
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