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Fengwei Zhou

12 accepted papers

2026

EvoComp: Learning Visual Token Compression for Multimodal Large Language Models via Semantic-Guided Evolutionary Labeling

CVPR 2026

Recent Multimodal Large Language Models (MLLMs) have demonstrated strong performance on vision-language understanding tasks, yet their inference efficiency is often hampered by the large number of visual tokens, particularly in high-resolution or multi-image scenarios. To address this issue, we prop

Cited by 0SourceScholar
2023

DAMix: Exploiting Deep Autoregressive Model Zoo for Improving Lossless Compression Generalization

AAAI 2023technical

Deep generative models have demonstrated superior performance in lossless compression on identically distributed data. However, in real-world scenarios, data to be compressed are of various distributions and usually cannot be known in advance. Thus, commercially expected neural compression must have…

Cited by 1SourcePDFScholar
2023

Explore and Exploit the Diverse Knowledge in Model Zoo for Domain Generalization

ICML 2023poster

The proliferation of pretrained models, as a result of advancements in pretraining techniques, has led to the emergence of a vast zoo of publicly available models. Effectively utilizing these resources to obtain models with robust out-of-distribution generalization capabilities for downstream tasks…

Cited by 13SourcePDFScholar
2023

Fair-CDA: Continuous and Directional Augmentation for Group Fairness

AAAI 2023technical

In this work, we propose Fair-CDA, a fine-grained data augmentation strategy for imposing fairness constraints. We use a feature disentanglement method to extract the features highly related to the sensitive attributes. Then we show that group fairness can be achieved by regularizing the models on t…

Cited by 3SourcePDFScholar
2023

Your Contrastive Learning Is Secretly Doing Stochastic Neighbor Embedding

ICLR 2023poster

Contrastive learning, especially self-supervised contrastive learning (SSCL), has achieved great success in extracting powerful features from unlabeled data. In this work, we contribute to the theoretical understanding of SSCL and uncover its connection to the classic data visualization method, stoc…

2022

OoD-Bench: Quantifying and Understanding Two Dimensions of Out-of-Distribution Generalization

CVPR 2022oral

Deep learning has achieved tremendous success with independent and identically distributed (i.i.d.) data. However, the performance of neural networks often degenerates drastically when encountering out-of-distribution (OoD) data, i.e., when training and test data are sampled from different distribut…

Cited by 125PDFcodeScholar
2022

ZooD: Exploiting Model Zoo for Out-of-Distribution Generalization

NeurIPS 2022accept

Recent advances on large-scale pre-training have shown great potentials of leveraging a large set of Pre-Trained Models (PTMs) for improving Out-of-Distribution (OoD) generalization, for which the goal is to perform well on possible unseen domains after fine-tuning on multiple training domains. Howe…

Cited by 19SourcePDFScholar
2021

Adversarial Robustness for Unsupervised Domain Adaptation

ICCV 2021poster

Extensive Unsupervised Domain Adaptation (UDA) studies have shown great success in practice by learning transferable representations across a labeled source domain and an unlabeled target domain with deep models. However, current work focuses on improving the generalization ability of UDA models on…

Cited by 46PDFScholar
2021

DecAug: Out-of-Distribution Generalization via Decomposed Feature Representation and Semantic Augmentation

AAAI 2021technical

While deep learning demonstrates its strong ability to handle independent and identically distributed (IID) data, it often suffers from out-of-distribution (OoD) generalization, where the test data come from another distribution (w.r.t. the training one). Designing a general OoD generalization frame…

Cited by 86SourcePDFScholar
2021

MetaAugment: Sample-Aware Data Augmentation Policy Learning

AAAI 2021technical

Automated data augmentation has shown superior performance in image recognition. Existing works search for dataset-level augmentation policies without considering individual sample variations, which are likely to be sub-optimal. On the other hand, learning different policies for different samples na…

Cited by 40SourcePDFScholar
2021

MixACM: Mixup-Based Robustness Transfer via Distillation of Activated Channel Maps

NeurIPS 2021poster

Deep neural networks are susceptible to adversarially crafted, small, and imperceptible changes in the natural inputs. The most effective defense mechanism against these examples is adversarial training which constructs adversarial examples during training by iterative maximization of loss. The mode…

Cited by 20SourcePDFScholar
2021

NAS-OoD: Neural Architecture Search for Out-of-Distribution Generalization

ICCV 2021poster

Recent advances on Out-of-Distribution (OoD) generalization reveal the robustness of deep learning models against distribution shifts. However, existing works focus on OoD algorithms, such as invariant risk minimization, domain generalization, or stable learning, without considering the influence of…

Cited by 56PDFScholar