activity
20202026
most citedInconsistency-aware Uncertainty Estimation for Semi-supervised Medical Image Segmentation

7 citations · 19 across the 24 of their papers we have counts for

collaborators

27 papers

cs.LG2026

Exploring Dualistic Meta-Learning to Enhance Domain Generalization in Open Set Scenarios

Xiran Wang, Jian Zhang, Lei Qi +2

Domain generalization learns from multiple source domains to generalize to unseen target domains. However, it often neglects the realistic case of label mismatch between source and…

cs.CL2026

Are Tools Always Beneficial? Learning to Invoke Tools Adaptively for Dual-Mode Multimodal LLM Reasoning

Qinghe Ma, Zhen Zhao, Yiming Wu +3

Tool-augmented reasoning has emerged as a promising direction for enhancing the reasoning capabilities of multimodal large language models (MLLMs). However, existing studies mainly…

cs.LG2026

Towards the Connection between Activation Sparsity and Flat Minima

Ze Peng, Jian Zhang, Lei Qi +2

The observation that activation sparsity emerges in MLP blocks of standardly trained Transformers offers an opportunity to drastically reduce computation costs without sacrificing…

cs.CV2026

StableMind: Source-Free Cross-Subject fMRI Decoding with Regularized Adaptation

Jintao Guo, Lin Wang, Shumeng Li +5

Existing cross-subject fMRI decoding methods typically train a model on multiple scanned subjects and then adapt it to a new subject using substantial paired fMRI-image data. Howev…

cs.LG2026

When Shared Knowledge Hurts: Spectral Over-Accumulation in Model Merging

Yayuan Li, Ze Peng, Jian Zhang +3

Model merging combines multiple fine-tuned models into a single model by adding their weight updates, providing a lightweight alternative to retraining. Existing methods primarily…

cs.LG2026

Decomposing and Composing: Towards Efficient Vision-Language Continual Learning via Rank-1 Expert Pool in a Single LoRA

Zhan Fa, Yue Duan, Jian Zhang +3

Continual learning (CL) in vision-language models (VLMs) faces significant challenges in improving task adaptation and avoiding catastrophic forgetting. Existing methods usually ha…

cs.LG2026

Leveraging Flatness to Improve Information-Theoretic Generalization Bounds for SGD

Ze Peng, Jian Zhang, Yisen Wang +3

Information-theoretic (IT) generalization bounds have been used to study the generalization of learning algorithms. These bounds are intrinsically data- and algorithm-dependent so…

cs.LG2025

MAGIC: Achieving Superior Model Merging via Magnitude Calibration

Yayuan Li, Jian Zhang, Jintao Guo +4

The proliferation of pre-trained models has given rise to a wide array of specialised, fine-tuned models. Model merging aims to merge the distinct capabilities of these specialised…

cs.LG2025

On the Implicit Adversariality of Catastrophic Forgetting in Deep Continual Learning

Ze Peng, Jian Zhang, Jintao Guo +3

Continual learning seeks the human-like ability to accumulate new skills in machine intelligence. Its central challenge is catastrophic forgetting, whose underlying cause has not b…

cs.CV2025

Diversity-enhanced Collaborative Mamba for Semi-supervised Medical Image Segmentation

Shumeng Li, Jian Zhang, Lei Qi +3

Acquiring high-quality annotated data for medical image segmentation is tedious and costly. Semi-supervised segmentation techniques alleviate this burden by leveraging unlabeled da…

cs.CV2025

Towards Perfection: Building Inter-component Mutual Correction for Retinex-based Low-light Image Enhancement

Luyang Cao, Han Xu, Jian Zhang +4

In low-light image enhancement, Retinex-based deep learning methods have garnered significant attention due to their exceptional interpretability. These methods decompose images in…

cs.CV2025

Correspondence as Video: Test-Time Adaption on SAM2 for Reference Segmentation in the Wild

Haoran Wang, Zekun Li, Jian Zhang +2

Large vision models like the Segment Anything Model (SAM) exhibit significant limitations when applied to downstream tasks in the wild. Consequently, reference segmentation, which…

cs.CV2025

Unleashing the Power of Intermediate Domains for Mixed Domain Semi-Supervised Medical Image Segmentation

Qinghe Ma, Jian Zhang, Lei Qi +3

Both limited annotation and domain shift are prevalent challenges in medical image segmentation. Traditional semi-supervised segmentation and unsupervised domain adaptation methods…

cs.CV2025

Mamba-Sea: A Mamba-based Framework with Global-to-Local Sequence Augmentation for Generalizable Medical Image Segmentation

Zihan Cheng, Jintao Guo, Jian Zhang +4

To segment medical images with distribution shifts, domain generalization (DG) has emerged as a promising setting to train models on source domains that can generalize to unseen ta…

cs.LG2025

Balanced Direction from Multifarious Choices: Arithmetic Meta-Learning for Domain Generalization

Xiran Wang, Jian Zhang, Lei Qi +1

Domain generalization is proposed to address distribution shift, arising from statistical disparities between training source and unseen target domains. The widely used first-order…

cs.CV2025

Taste More, Taste Better: Diverse Data and Strong Model Boost Semi-Supervised Crowd Counting

Maochen Yang, Zekun Li, Jian Zhang +2

Semi-supervised crowd counting is crucial for addressing the high annotation costs of densely populated scenes. Although several methods based on pseudo-labeling have been proposed…

cs.CV2025

Steady Progress Beats Stagnation: Mutual Aid of Foundation and Conventional Models in Mixed Domain Semi-Supervised Medical Image Segmentation

Qinghe Ma, Jian Zhang, Zekun Li +3

Large pretrained visual foundation models exhibit impressive general capabilities. However, the extensive prior knowledge inherent in these models can sometimes be a double-edged s…

cs.CV2024★ 1 cited

Dual-Teacher Ensemble Models with Double-Copy-Paste for 3D Semi-Supervised Medical Image Segmentation

Zhan Fa, Shumeng Li, Jian Zhang +3

Semi-supervised learning (SSL) techniques address the high labeling costs in 3D medical image segmentation, with the teacher-student model being a common approach. However, using a…

cs.CV2024

The Devil is in the Statistics: Mitigating and Exploiting Statistics Difference for Generalizable Semi-supervised Medical Image Segmentation

Muyang Qiu, Jian Zhang, Lei Qi +3

Despite the recent success of domain generalization in medical image segmentation, voxel-wise annotation for all source domains remains a huge burden. Semi-supervised domain genera…

cs.CV2024

Learn to Preserve and Diversify: Parameter-Efficient Group with Orthogonal Regularization for Domain Generalization

Jiajun Hu, Jian Zhang, Lei Qi +2

Domain generalization (DG) aims to avoid the performance degradation of the model when the distribution shift between the limited training data and unseen test data occurs. Recentl…

cs.CV2024

Constructing and Exploring Intermediate Domains in Mixed Domain Semi-supervised Medical Image Segmentation

Qinghe Ma, Jian Zhang, Lei Qi +3

Both limited annotation and domain shift are prevalent challenges in medical image segmentation. Traditional semi-supervised segmentation and unsupervised domain adaptation methods…

cs.CV2023

Exploring Flat Minima for Domain Generalization with Large Learning Rates

Jian Zhang, Lei Qi, Yinghuan Shi +1

Domain Generalization (DG) aims to generalize to arbitrary unseen domains. A promising approach to improve model generalization in DG is the identification of flat minima. One typi…

cs.CV2023★ 5 cited

DomainAdaptor: A Novel Approach to Test-time Adaptation

Jian Zhang, Lei Qi, Yinghuan Shi +1

To deal with the domain shift between training and test samples, current methods have primarily focused on learning generalizable features during training and ignore the specificit…

cs.CV2023★ 3 cited

Generalizable Decision Boundaries: Dualistic Meta-Learning for Open Set Domain Generalization

Xiran Wang, Jian Zhang, Lei Qi +1

Domain generalization (DG) is proposed to deal with the issue of domain shift, which occurs when statistical differences exist between source and target domains. However, most curr…