Search Results for author: Guowei Xu

Found 8 papers, 5 papers with code

ACE : Off-Policy Actor-Critic with Causality-Aware Entropy Regularization

no code implementations22 Feb 2024 Tianying Ji, Yongyuan Liang, Yan Zeng, Yu Luo, Guowei Xu, Jiawei Guo, Ruijie Zheng, Furong Huang, Fuchun Sun, Huazhe Xu

The varying significance of distinct primitive behaviors during the policy learning process has been overlooked by prior model-free RL algorithms.

Continuous Control Efficient Exploration

Towards Arbitrary Text-driven Image Manipulation via Space Alignment

no code implementations25 Jan 2023 Yunpeng Bai, Zihan Zhong, Chao Dong, Weichen Zhang, Guowei Xu, Chun Yuan

Then, the text input can be directly accessed into the StyleGAN space and be used to find the semantic shift according to the text description.

Attribute Image Manipulation

Automatic Task Requirements Writing Evaluation via Machine Reading Comprehension

1 code implementation15 Jul 2021 Shiting Xu, Guowei Xu, Peilei Jia, Wenbiao Ding, Zhongqin Wu, Zitao Liu

A TR writing question may include multiple requirements and a high-quality essay must respond to each requirement thoroughly and accurately.

Machine Reading Comprehension

Robust Learning for Text Classification with Multi-source Noise Simulation and Hard Example Mining

1 code implementation15 Jul 2021 Guowei Xu, Wenbiao Ding, Weiping Fu, Zhongqin Wu, Zitao Liu

Despite that pre-trained models achieve state-of-the-art performance in many NLP benchmarks, we prove that they are not robust to noisy texts generated by real OCR engines.

Optical Character Recognition Optical Character Recognition (OCR) +2

Representation Learning from Limited Educational Data with Crowdsourced Labels

1 code implementation23 Sep 2020 Wentao Wang, Guowei Xu, Wenbiao Ding, Gale Yan Huang, Guoliang Li, Jiliang Tang, Zitao Liu

Extensive experiments conducted on three real-world data sets demonstrate the superiority of our framework on learning representations from limited data with crowdsourced labels, comparing with various state-of-the-art baselines.

Face Recognition Machine Translation +1

Dolphin: A Spoken Language Proficiency Assessment System for Elementary Education

no code implementations1 Aug 2019 Wenbiao Ding, Guowei Xu, Tianqiao Liu, Weiping Fu, Yujia Song, Chaoyou Guo, Cong Kong, Songfan Yang, Gale Yan Huang, Zitao Liu

In our offline experiments, we show that Dolphin improves both phonological fluency and semantic relevance evaluation performance when compared to state-of-the-art baselines on real-world educational data sets.

Math

Learning Effective Embeddings From Crowdsourced Labels: An Educational Case Study

1 code implementation18 Jul 2019 Guowei Xu, Wenbiao Ding, Jiliang Tang, Songfan Yang, Gale Yan Huang, Zitao Liu

In practice, the crowdsourced labels are usually inconsistent among crowd workers given their diverse expertise and the number of crowdsourced labels is very limited.

Representation Learning

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