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Sheng Tang

14 accepted papers

2026

Beyond Semantic Features: Pixel-level Mapping for Generalized AI-Generated Image Detection

AAAI 2026technical

The rapid evolution of generative technologies necessitates reliable methods for detecting AI-generated images. A critical limitation of current detectors is their failure to generalize to images from unseen generative models, as they often overfit to source-specific semantic cues rather than learni

Cited by 0SourcePDFScholar
2026

Beyond Token-level Supervision: Unlocking the Potential of Decoding-based Regression via Reinforcement Learning

ICML 2026poster

Decoding-based regression, which reformulates regression as a sequence generation task, has emerged as a promising paradigm of applying large language models for numerical prediction. However, its progress is hindered by the misalignment between discrete token-level objectives (e.g., cross-entropy) …

Cited by 1SourceScholar
2026

ResCa: Residual Caching for Diffusion Transformers Acceleration

CVPR 2026

Diffusion transformers have achieved remarkable progress in high-quality image and video generation, but their computational overhead remains a significant challenge. Existing token reduction-based acceleration techniques, such as caching and merging, attempt to reduce this cost from both temporal a

Cited by 0SourcecodeScholar
2026

Video-SVD: Efficient Video Diffusion via Orthogonal Basis Composition

ICML 2026poster

Video Diffusion Transformers (VDiTs) represent the state-of-the-art in video generation but are fundamentally constrained by the quadratic computational complexity of self-attention. To accelerate this critical computation, we analyze the pre-softmax matrix ($QK^T$) and reveal two key insights: (1) …

Cited by 0SourceScholar
2026

You Don't Protect if You Don't Expect: Breaking the Key Assumption behind CLIP's Test-Time Defenses

ICML 2026poster

Recent test-time defenses for CLIP claim to preserve zero-shot clean accuracy while improving adversarial robustness. However, we find the reported robustness of six recent proposed state-of-the-art methods substantially overestimated: they fail under basic adaptive attacks. We further observe that …

Cited by 0SourceScholar
2025

Attend to Not Attended: Structure-then-Detail Token Merging for Post-training DiT Acceleration

CVPR 2025poster

Diffusion transformers have shown exceptional performance in visual generation but incur high computational costs. Token reduction techniques that compress models by sharing the denoising process among similar tokens have been introduced. However, existing approaches neglect the denoising priors of…

2025

FR2ViT: Finetuning-free Token Reduction for Dense Prediction Through a Refinement-Reactivation Architecture

ICASSP 2025accepted

Token reduction is an efficient method for accelerating vision transformers. Techniques like token pruning and merging progressively decrease the number of active tokens to reduce the computation cost. However, when applied to dense prediction tasks, these techniques crudely cache low-level features…

Cited by 0SourceScholar
2024

Self-Supervised Adversarial Training via Diverse Augmented Queries and Self-Supervised Double Perturbation

NeurIPS 2024poster

Recently, there have been some works studying self-supervised adversarial training, a learning paradigm that learns robust features without labels. While those works have narrowed the performance gap between self-supervised adversarial training (SAT) and supervised adversarial training (supervised A…

2023

Progressive Open Space Expansion for Open-Set Model Attribution

CVPR 2023poster

Despite the remarkable progress in generative technology, the Janus-faced issues of intellectual property protection and malicious content supervision have arisen. Efforts have been paid to manage synthetic images by attributing them to a set of potential source models. However, the closed-set class…

2020

Overcoming Classifier Imbalance for Long-Tail Object Detection With Balanced Group Softmax

CVPR 2020oral

Solving long-tail large vocabulary object detection with deep learning based models is a challenging and demanding task, which is however under-explored. In this work, we provide the first systematic analysis on the underperformance of state-of-the-art models in front of long-tail distribution. We f…

Cited by 351PDFcodeScholar
2020

The Devil is in Classification: A Simple Framework for Long-tail Instance Segmentation

ECCV 2020poster

Most existing object instance detection and segmentation models only work well on fairly balanced benchmarks where per-category training sample numbers are comparable, such as COCO. They tend to suffer performance drop on realistic datasets that are usually long-tailed. This work aims to study and a…