Domain-Lifelong Learning for Dialogue State Tracking via Knowledge Preservation Networks | |
Liu QB(刘庆斌)2,3; Cao PF(曹鹏飞)2,3; Liu C(刘操)1; Chen JS(陈见耸)1; Cai XL(蔡勋梁)1; Yang F(杨帆)1; He SZ(何世柱)2,3; Liu K(刘康)2,3; Zhao J(赵军)2,3 | |
2021-11 | |
会议日期 | 2021-11 |
会议地点 | online |
DOI | 10.18653/v1/2021.emnlp-main.176 |
英文摘要 | Dialogue state tracking (DST), which estimates user goals given a dialogue context, is an essential component of task-oriented dialogue systems. Conventional DST models areusually trained offline, which requires a fixed dataset prepared in advance. This paradigmis often impractical in real-world applications since online dialogue systems usually involve continually emerging new data and domains. Therefore, this paper explores Domain-Lifelong Learning for Dialogue State Tracking(DLL-DST), which aims to continually train a DST model on new data to learn incessantly emerging new domains while avoiding catastrophically forgetting old learned domains.To this end, we propose a novel domain-lifelong learning method, called Knowledge Preservation Networks (KPN), which consists of multi-prototype enhanced retrospection and multi-strategy knowledge distillation, to solve the problems of expression diversity and combinatorial explosion in the DLL-DST task. Experimental results show that KPN effectively alleviates catastrophic forgetting and outperforms previous state-of-the-art lifelong learning methods by 4.25% and 8.27% of whole joint goal accuracy on the MultiWOZ benchmark and the SGD benchmark, respectively. |
内容类型 | 会议论文 |
源URL | [http://ir.ia.ac.cn/handle/173211/46634] |
专题 | 模式识别国家重点实验室_自然语言处理 |
通讯作者 | Zhao J(赵军) |
作者单位 | 1.Meituan, Beijing, China 2.School of Artificial Intelligence, University of Chinese Academy of Sciences, Beijing, China 3.National Laboratory of Pattern Recognition, Institute of Automation,Chinese Academy of Sciences, Beijing, China |
推荐引用方式 GB/T 7714 | Liu QB,Cao PF,Liu C,et al. Domain-Lifelong Learning for Dialogue State Tracking via Knowledge Preservation Networks[C]. 见:. online. 2021-11. |
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