Search Results for author: Zifeng Cheng

Found 4 papers, 4 papers with code

Unifying Token and Span Level Supervisions for Few-Shot Sequence Labeling

1 code implementation16 Jul 2023 Zifeng Cheng, Qingyu Zhou, Zhiwei Jiang, Xuemin Zhao, Yunbo Cao, Qing Gu

However, these methods are only trained at a single granularity (i. e., either token level or span level) and have some weaknesses of the corresponding granularity.

Metric Learning

Controlling Class Layout for Deep Ordinal Classification via Constrained Proxies Learning

1 code implementation1 Mar 2023 Cong Wang, Zhiwei Jiang, Yafeng Yin, Zifeng Cheng, Shiping Ge, Qing Gu

For deep ordinal classification, learning a well-structured feature space specific to ordinal classification is helpful to properly capture the ordinal nature among classes.

Ordinal Classification

Learning to Classify Open Intent via Soft Labeling and Manifold Mixup

1 code implementation16 Apr 2022 Zifeng Cheng, Zhiwei Jiang, Yafeng Yin, Cong Wang, Qing Gu

In our method, soft labeling is used to reshape the label distribution of the known intent samples, aiming at reducing model's overconfident on known intents.

intent-classification Intent Classification +1

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