Search Results for author: Guoqiang Wu

Found 10 papers, 7 papers with code

DiffAIL: Diffusion Adversarial Imitation Learning

1 code implementation11 Dec 2023 Bingzheng Wang, Guoqiang Wu, Teng Pang, Yan Zhang, Yilong Yin

To address this issue, we propose a method named diffusion adversarial imitation learning (DiffAIL), which introduces the diffusion model into the AIL framework.

Imitation Learning

Towards Understanding Generalization of Macro-AUC in Multi-label Learning

1 code implementation9 May 2023 Guoqiang Wu, Chongxuan Li, Yilong Yin

We theoretically identify a critical factor of the dataset affecting the generalization bounds: \emph{the label-wise class imbalance}.

Generalization Bounds Multi-Label Learning

Revisiting Discriminative vs. Generative Classifiers: Theory and Implications

1 code implementation5 Feb 2023 Chenyu Zheng, Guoqiang Wu, Fan Bao, Yue Cao, Chongxuan Li, Jun Zhu

Theoretically, the paper considers the surrogate loss instead of the zero-one loss in analyses and generalizes the classical results from binary cases to multiclass ones.

Few-Shot Learning Image Classification +1

Deep Ensemble as a Gaussian Process Posterior

no code implementations29 Sep 2021 Zhijie Deng, Feng Zhou, Jianfei Chen, Guoqiang Wu, Jun Zhu

Deep Ensemble (DE) is a flexible, feasible, and effective alternative to Bayesian neural networks (BNNs) for uncertainty estimation in deep learning.

Variational Inference

On the Convergence of Prior-Guided Zeroth-Order Optimization Algorithms

1 code implementation NeurIPS 2021 Shuyu Cheng, Guoqiang Wu, Jun Zhu

Finally, our theoretical results are confirmed by experiments on several numerical benchmarks as well as adversarial attacks.

Stability and Generalization of Bilevel Programming in Hyperparameter Optimization

1 code implementation NeurIPS 2021 Fan Bao, Guoqiang Wu, Chongxuan Li, Jun Zhu, Bo Zhang

Our results can explain some mysterious behaviours of the bilevel programming in practice, for instance, overfitting to the validation set.

Hyperparameter Optimization

Rethinking and Reweighting the Univariate Losses for Multi-Label Ranking: Consistency and Generalization

no code implementations NeurIPS 2021 Guoqiang Wu, Chongxuan Li, Kun Xu, Jun Zhu

Our results show that learning algorithms with the consistent univariate loss have an error bound of $O(c)$ ($c$ is the number of labels), while algorithms with the inconsistent pairwise loss depend on $O(\sqrt{c})$ as shown in prior work.

Computational Efficiency Multi-Label Classification

Multi-label classification: do Hamming loss and subset accuracy really conflict with each other?

1 code implementation NeurIPS 2020 Guoqiang Wu, Jun Zhu

On the other hand, when directly optimizing SA with its surrogate loss, it has learning guarantees that depend on $O(\sqrt{c})$ for both HL and SA measures.

General Classification Multi-Label Classification

Joint Ranking SVM and Binary Relevance with Robust Low-Rank Learning for Multi-Label Classification

1 code implementation5 Nov 2019 Guoqiang Wu, Ruobing Zheng, Yingjie Tian, Dalian Liu

RBRL inherits the ranking loss minimization advantages of Rank-SVM, and thus overcomes the disadvantages of BR suffering the class-imbalance issue and ignoring the label correlations.

General Classification Multi-Label Classification

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