Yang Ping


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UniEX: An Effective and Efficient Framework for Unified Information Extraction via a Span-extractive Perspective
Yang Ping | JunYu Lu | Ruyi Gan | Junjie Wang | Yuxiang Zhang | Pingjian Zhang | Jiaxing Zhang
Proceedings of the 61st Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers)

We propose a new paradigm for universal information extraction (IE) that is compatible with any schema format and applicable to a list of IE tasks, such as named entity recognition, relation extraction, event extraction and sentiment analysis. Our approach converts the text-based IE tasks as the token-pair problem, which uniformly disassembles all extraction targets into joint span detection, classification and association problems with a unified extractive framework, namely UniEX. UniEX can synchronously encode schema-based prompt and textual information, and collaboratively learn the generalized knowledge from pre-defined information using the auto-encoder language models. We develop a traffine attention mechanism to integrate heterogeneous factors including tasks, labels and inside tokens, and obtain the extraction target via a scoring matrix. Experiment results show that UniEX can outperform generative universal IE models in terms of performance and inference-speed on 14 benchmarks IE datasets with the supervised setting. The state-of-the-art performance in low-resource scenarios also verifies the transferability and effectiveness of UniEX.


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Gaussian Process based Deep Dyna-Q approach for Dialogue Policy Learning
Guanlin Wu | Wenqi Fang | Ji Wang | Jiang Cao | Weidong Bao | Yang Ping | Xiaomin Zhu | Zheng Wang
Findings of the Association for Computational Linguistics: ACL-IJCNLP 2021