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Wei Sun

63 accepted papers

2026

Adapter Shield: A Unified Framework with Built-in Authentication for Preventing Unauthorized Zero-Shot Image-to-Image Generation

CVPR 2026

With the rapid progress in diffusion models, image synthesis has advanced to the stage of zero-shot image-to-image generation, where high-fidelity replication of facial identities or artistic styles can be achieved using just one portrait or artwork, without modifying any model weights. Although the

Cited by 0SourceScholar
2026

Audio-Assisted Face Video Restoration with Temporal and Identity Complementary Learning

AAAI 2026technical

Face videos accompanied by audio have become integral to our daily lives, while they often suffer from complex degradations. Most face video restoration methods neglect the intrinsic correlations between visual and audio features, particularly in the mouth region. Several audio-aided face video rest

Cited by 0SourcePDFScholar
2026

EEmo-Logic: A Unified Dataset and Multi-Stage Framework for Comprehensive Image-Evoked Emotion Assessment

ICML 2026spotlight

Understanding the multi-dimensional attributes and intensity nuances of image-evoked emotions is pivotal for advancing machine empathy and empowering diverse human-computer interaction applications. However, existing models are still limited to coarse-grained emotion perception or deficient reasonin…

Cited by 0SourceScholar
2026

FedBRICK: Structural Bias Aware Heterogeneous Foundation Model Federated Tuning

AAAI 2026technical

Model-heterogeneous federated tuning (MHFT) enables the privacy-preserving fine-tuning of foundation models in heterogeneous systems by allowing clients and the server to adopt different model architectures. Depth partial training—where each client updates only a subset of the model

Cited by 0SourcePDFScholar
2026

Generalizable Video Quality Assessment via Weak-to-Strong Learning

CVPR 2026

Video quality assessment (VQA) seeks to predict the perceptual quality of a video in alignment with human visual perception, serving as a fundamental tool for quantifying quality degradation across video processing workflows. The dominant VQA paradigm relies on supervised training with human-labeled

Cited by 0SourcecodeScholar
2026

LifeEval: A Multimodal Benchmark for Assistive AI in Egocentric Daily Life Tasks

CVPR 2026

The rapid progress of Multimodal Large Language Models (MLLMs) marks a significant step toward artificial general intelligence, offering great potential for augmenting human capabilities. However, their ability to provide effective assistance in dynamic, real-world environments remains largely under

Cited by 0SourceScholar
2026

Prediction-Powered Adaptive Inference with Pretrained AI Models for Contextual Bandits

ICML 2026poster

In adaptive experiments, statistical inference is essential for reliable decision-making and scientific discovery. Often in these settings, collecting labeled data is expensive, but decision-makers have access to large unlabeled datasets and strong pretrained AI models that can generate outcome pred…

Cited by 0SourceScholar
2026

Principled Synthetic Data Enables the First Scaling Laws for LLMs in Recommendation

ICML 2026poster

Large Language Models (LLMs) represent a promising frontier for recommender systems, yet their development has been impeded by the absence of predictable scaling laws, which are crucial for guiding research and optimizing resource allocation. We hypothesize that this may be attributed to the inheren…

Cited by 0SourceScholar
2026

Rethinking Cross-Modal Anchor Alignment for Mitigating Error Accumulation

CVPR 2026

Mitigating noisy correspondence in cross-modal matching poses a serious challenge due to the problem of error accumulation. Existing methods primarily attribute this accumulation to errors caused by noisy sample pairs. However, a novel source of error from clean sample pairs (also termed anchor pair

Cited by 0SourceScholar
2026

SafeSci: Safety Evaluation of Large Language Models in Science Domains and Beyond

ICML 2026poster

The success of large language models (LLMs) in scientific domains has heightened safety concerns, prompting numerous benchmarks to evaluate their scientific safety. Existing benchmarks often suffer from limited risk coverage and a reliance on subjective evaluation. To address thess problems, we intr…

Cited by 0SourceScholar
2026

Sample Efficient Offline RL via T-Symmetry Enforced Latent State-Stitching

ICLR 2026poster

Offline reinforcement learning (RL) has achieved notable progress in recent years. However, most existing offline RL methods require a large amount of training data to achieve reasonable performance and offer limited out-of-distribution (OOD) generalization capability due to conservative data-relate…

Cited by 0SourceScholar
2026

VQAThinker: Exploring Generalizable and Explainable Video Quality Assessment via Reinforcement Learning

AAAI 2026technical

Video quality assessment (VQA) aims to objectively quantify perceptual quality degradation in alignment with human visual perception. Despite recent advances, existing VQA models still suffer from two critical limitations: poor generalization to out-of-distribution (OOD) videos and limited explainab

Cited by 0SourcePDFScholar
2026

Weaving Graph over Tokens: Contextualizing Structured Sequences for LLMs

ICML 2026poster

Generative Graph Language Models (GLMs) must reconcile topology with causal language modeling. Linearization obscures multi-hop connectivity, while encoder-based methods bottleneck token-level reasoning during generation. Viewing context modeling as a form of message passing, we introduce **Weaver**…

Cited by 0SourceScholar
2025

A-Bench: Are LMMs Masters at Evaluating AI-generated Images?

ICLR 2025poster

How to accurately and efficiently assess AI-generated images (AIGIs) remains a critical challenge for generative models. Given the high costs and extensive time commitments required for user studies, many researchers have turned towards employing large multi-modal models (LMMs) as AIGI evaluators, t…

2025

AGAV-Rater: Adapting Large Multimodal Model for AI-Generated Audio-Visual Quality Assessment

ICML 2025poster

Many video-to-audio (VTA) methods have been proposed for dubbing silent AI-generated videos. An efficient quality assessment method for AI-generated audio-visual content (AGAV) is crucial for ensuring audio-visual quality. Existing audio-visual quality assessment methods struggle with unique distort…

2025

API Pack: A Massive Multi-Programming Language Dataset for API Call Generation

ICLR 2025poster

We introduce API Pack, a massive multi-programming language dataset containing over one million instruction-API calls for improving the API call generation capabilities of large language models. Our evaluation highlights three key findings: First, fine-tuning on API Pack enables open-source models t…

2025

An Efficient and Precise Training Data Construction Framework for Process-supervised Reward Model in Mathematical Reasoning

ACL 2025long

Enhancing the mathematical reasoning capabilities of Large Language Models (LLMs) is of great scientific and practical significance. Researchers typically employ process-supervised reward models (PRMs) to guide the reasoning process, effectively improving the models’ reasoning abilities. However, ex…

2025

Causal LLM Routing: End-to-End Regret Minimization from Observational Data

NeurIPS 2025poster

LLM routing aims to select the most appropriate model for each query, balancing competing performance metrics such as accuracy and cost across a pool of language models. Prior approaches typically adopt a decoupled strategy, where the metrics are first predicted and the model is then selected based…

Cited by 0SourceScholar
2025

FWAF-VID: A Flapping-Wing Aggressive Flight Benchmark Dataset for Visual-Inertial Localization

RA-L 2025

Accurate state estimation of micro aerial vehicles (MAVs) in high-speed and dynamic environments poses a significant challenge for visual-inertial odometry (VIO) algorithms. Flapping-wing aerial vehicles (FWAVs), as an emerging flight platform, have attracted significant attention for stealth capabi

Cited by 5SourcecodeScholar
2025

KTAE: A Model-Free Algorithm to Key-Tokens Advantage Estimation in Mathematical Reasoning

NeurIPS 2025poster

Recent advances have demonstrated that integrating reinforcement learning with rule-based rewards can significantly enhance the reasoning capabilities of large language models (LLMs), even without supervised fine-tuning (SFT). However, prevalent reinforcement learning algorithms such as GRPO and its…

Cited by 0SourcecodeScholar
2025

LamPro: Multi-Prototype Representation Learning for Enhanced Visual Pattern Recognition

ICRA 2025

Visual pattern recognition usually plays important roles in robotics and automation society where the pattern recognition relies on representation learning. Existing representation learning often neglects two important issues, the diversity of intra-class representation and under-exploited label uti

Cited by 0SourceScholar
2025

LanCOPE: Language-Guided Category-Level Object Pose Estimation From a Single RGB Image

RA-L 2025

Monocular RGB-based category-level object pose estimation is more practical and cost-effective for robotics. However, existing methods do not fully exploit the rich semantic and contextual information in multimodal data (e.g. language) that provides additional object attributes to guide the model in

Cited by 1SourceScholar
2025

Look Again, Think Slowly: Enhancing Visual Reflection in Vision-Language Models

EMNLP 2025

Recent advances in text-only “slow-thinking” reasoning have prompted efforts to transfer this capability to vision-language models (VLMs), for training visual reasoning models (VRMs). However, such transfer faces critical challenges: Effective “slow thinking” in VRMs requires visual reflection, the

2025

Mitigating Negative Interference in Multilingual Knowledge Editing through Null-Space Constraints

ACL 2025finding

Efficiently updating multilingual knowledge in large language models (LLMs) without disrupting coherent factual representations across languages remains a significant challenge. While deploying separate editing systems for each language might seem viable, this approach incurs substantial costs due t…

2025

MonoDiff9D: Monocular Category-Level 9D Object Pose Estimation via Diffusion Model

ICRA 2025

Object pose estimation is a core means for robots to understand and interact with their environment. For this task, monocular category-level methods are attractive as they require only a single RGB camera. However, current methods rely on shape priors or CAD models of the intra-class known objects.

Cited by 5SourcecodeScholar
2025

Privacy-Preserving Personalized Federated Prompt Learning for Multimodal Large Language Models

ICLR 2025poster

Multimodal Large Language Models (LLMs) are pivotal in revolutionizing customer support and operations by integrating multiple modalities such as text, images, and audio. Federated Prompt Learning (FPL) is a recently proposed approach that combines pre-trained multimodal LLMs such as vision-language…

Cited by 1SourcePDFScholar
2025

Q-Bench-Video: Benchmark the Video Quality Understanding of LMMs

CVPR 2025poster

With the rising interest in research on Large Multi-modal Models (LMMs) for video understanding, many studies have emphasized general video comprehension capabilities, neglecting the systematic exploration into video quality understanding. To address this oversight, we introduce Q-Bench-Video in thi…

2025

Q-Eval-100K: Evaluating Visual Quality and Alignment Level for Text-to-Vision Content

CVPR 2025poster

Evaluating text-to-vision content hinges on two crucial aspects: **visual quality** and **alignment**. While significant progress has been made in developing objective models to assess these dimensions, the performance of such models heavily relies on the scale and quality of human annotations. Acco…

2025

RGB-Based Category-Level Object Pose Estimation via Depth Recovery and Adaptive Refinement

RA-L 2025

Category-level pose estimation methods have received widespread attention as they can be generalized to intra-class unseen objects. Although RGB-D-based category-level methods have made significant progress, reliance on depth image limits practical application. RGB-based methods offer a more practic

Cited by 3SourceScholar
2025

Semi-Supervised Vision-Centric 3D Occupancy World Model for Autonomous Driving

ICLR 2025poster

Understanding world dynamics is crucial for planning in autonomous driving. Recent methods attempt to achieve this by learning a 3D occupancy world model that forecasts future surrounding scenes based on current observation. However, 3D occupancy labels are still required to produce promising result…

2024

A Reduced-Reference Quality Assessment Metric for Textured Mesh Digital Humans

ICASSP 2024accepted

In an era where 3D Digital Humans (DHs) are becoming increasingly prevalent in fields like gaming, automotive, and the metaverse, the demand for high DH visual quality is rising. This paper presents the first-ever reduced-reference (RR) quality assessment metric tailored specifically for textured me…

Cited by 0SourceScholar
2024

Alleviating Exposure Bias in Diffusion Models through Sampling with Shifted Time Steps

ICLR 2024poster

Diffusion Probabilistic Models (DPM) have shown remarkable efficacy in the synthesis of high-quality images. However, their inference process characteristically requires numerous, potentially hundreds, of iterative steps, which could exaggerate the problem of exposure bias due to the training and in…

2024

DiffStega: Towards Universal Training-Free Coverless Image Steganography with Diffusion Models

IJCAI 2024poster

Traditional image steganography focuses on concealing one image within another, aiming to avoid steganalysis by unauthorized entities. Coverless image steganography (CIS) enhances imperceptibility by not using any cover image. Recent works have utilized text prompts as keys in CIS through diffusion…

2024

GAIA: Rethinking Action Quality Assessment for AI-Generated Videos

NeurIPS 2024spotlight

Assessing action quality is both imperative and challenging due to its significant impact on the quality of AI-generated videos, further complicated by the inherently ambiguous nature of actions within AI-generated video (AIGV). Current action quality assessment (AQA) algorithms predominantly focus…

2024

Learning Optimal Projection for Forecast Reconciliation of Hierarchical Time Series

ICML 2024poster

Hierarchical time series forecasting requires not only prediction accuracy but also coherency, i.e., forecasts add up appropriately across the hierarchy. Recent literature has shown that reconciliation via projection outperforms prior methods such as top-down or bottom-up approaches. Unlike existing…

Cited by 0SourcePDFScholar
2024

Manifold-Aligned Counterfactual Explanations for Neural Networks

AISTATS 2024poster

We study the problem of finding optimal manifold-aligned counterfactual explanations for neural networks. Existing approaches that involve solving a complex mixed-integer optimization (MIP) problem frequently suffer from scalability issues, limiting their practical usefulness. Furthermore, the solut…

Cited by 15SourcePDFScholar
2024

OST: Refining Text Knowledge with Optimal Spatio-Temporal Descriptor for General Video Recognition

CVPR 2024poster

Due to the resource-intensive nature of training vision-language models on expansive video data a majority of studies have centered on adapting pre-trained image-language models to the video domain. Dominant pipelines propose to tackle the visual discrepancies with additional temporal learners while…

2023

A Novel Hybrid Unsupervised Domain Adaptation Method for Cross-Subject Joint Angle Estimation From Surface Electromyography

RA-L 2023

Individual physiological differences constrain the cross-user application of joint angle estimation models based on surface electromyography (sEMG) signals. Current cross-user methods for myoelectric joint angle estimation often involve the use of angle or optical sensors, which increases the traini

Cited by 15SourceScholar
2023

DANet: Density Adaptive Convolutional Network With Interactive Attention for 3D Point Clouds

RA-L 2023

Local features and contextual dependencies are crucial for 3D point cloud analysis. Many works have been devoted to designing better local convolutional kernels that exploit the contextual dependencies. However, current point convolutions lack robustness to varying point cloud density. Moreover, con

Cited by 7SourceScholar
2023

MD-VQA: Multi-Dimensional Quality Assessment for UGC Live Videos

CVPR 2023poster

User-generated content (UGC) live videos are often bothered by various distortions during capture procedures and thus exhibit diverse visual qualities. Such source videos are further compressed and transcoded by media server providers before being distributed to end-users. Because of the flourishing…

2023

MM-PCQA: Multi-Modal Learning for No-reference Point Cloud Quality Assessment

IJCAI 2023poster

The visual quality of point clouds has been greatly emphasized since the ever-increasing 3D vision applications are expected to provide cost-effective and high-quality experiences for users. Looking back on the development of point cloud quality assessment (PCQA), the visual quality is usually eval…

2023

Perceptual Quality Assessment for Digital Human Heads

ICASSP 2023accepted

Digital humans are attracting more and more research interest during the last decade, the generation, representation, rendering, and animation of which have been put into large amounts of effort. However, the quality assessment of digital humans has fallen behind. Therefore, to tackle the challenge…

Cited by 0SourceScholar
2022

Constrained Prescriptive Trees via Column Generation

AAAI 2022technical

With the abundance of available data, many enterprises seek to implement data-driven prescriptive analytics to help them make informed decisions. These prescriptive policies need to satisfy operational constraints, and proactively eliminate rule conflicts, both of which are ubiquitous in practice. I…

Cited by 12SourcePDFScholar
2022

Enhancing Counterfactual Classification Performance via Self-Training

AAAI 2022technical

Unlike traditional supervised learning, in many settings only partial feedback is available. We may only observe outcomes for the chosen actions, but not the counterfactual outcomes associated with other alternatives. Such settings encompass a wide variety of applications including pricing, online m…

2022

HNO: High-Order Numerical Architecture for ODE-Inspired Deep Unfolding Networks

AAAI 2022technical

Recently, deep unfolding networks (DUNs) based on optimization algorithms have received increasing attention, and their high efficiency has been confirmed by many experimental and theoretical results. Since this type of networks combines model-based traditional optimization algorithms, they have hi…

Cited by 0SourcePDFScholar
2022

Video-based Human-Object Interaction Detection from Tubelet Tokens

NeurIPS 2022accept

We present a novel vision Transformer, named TUTOR, which is able to learn tubelet tokens, served as highly-abstracted spatial-temporal representations, for video-based human-object interaction (V-HOI) detection. The tubelet tokens structurize videos by agglomerating and linking semantically-related…

Cited by 18SourcePDFScholar
2021

DominoSearch: Find layer-wise fine-grained N:M sparse schemes from dense neural networks

NeurIPS 2021poster

Neural pruning is a widely-used compression technique for Deep Neural Networks (DNNs). Recent innovations in Hardware Architectures (e.g. Nvidia Ampere Sparse Tensor Core) and N:M fine-grained Sparse Neural Network algorithms (i.e. every M-weights contains N non-zero values) reveal a promising resea…

2021

Model Distillation for Revenue Optimization: Interpretable Personalized Pricing

ICML 2021spotlight

Data-driven pricing strategies are becoming increasingly common, where customers are offered a personalized price based on features that are predictive of their valuation of a product. It is desirable for this pricing policy to be simple and interpretable, so it can be verified, checked for fairness…

Cited by 53SourcePDFScholar
2020

Attentive Normalization

ECCV 2020poster

In state-of-the-art deep neural networks, both feature normalization and feature attention have become ubiquitous with significant performance improvement shown in a vast amount of tasks. They are usually studied as separate modules, however. In this paper, we propose a light-weight integration betw…

Cited by 46SourcePDFScholar
2020

PVN3D: A Deep Point-Wise 3D Keypoints Voting Network for 6DoF Pose Estimation

CVPR 2020poster

In this work, we present a novel data-driven method for robust 6DoF object pose estimation from a single RGBD image. Unlike previous methods that directly regressing pose parameters, we tackle this challenging task with a keypoint-based approach. Specifically, we propose a deep Hough voting network…

Cited by 613PDFcodeScholar
2019

Dynamic Learning with Frequent New Product Launches: A Sequential Multinomial Logit Bandit Problem

ICML 2019oral

Motivated by the phenomenon that companies introduce new products to keep abreast with customers’ rapidly changing tastes, we consider a novel online learning setting where a profit-maximizing seller needs to learn customers’ preferences through offering recommendations, which may contain existing p…

Cited by 2SourcePDFScholar
2015

Non-convex Statistical Optimization for Sparse Tensor Graphical Model

NeurIPS 2015poster

We consider the estimation of sparse graphical models that characterize the dependency structure of high-dimensional tensor-valued data. To facilitate the estimation of the precision matrix corresponding to each way of the tensor, we assume the data follow a tensor normal distribution whose covarian…

Cited by 23SourcePDFScholar