← Search

Xinghao Chen

51 accepted papers

2026

Breaking the Echo Chamber: A Dynamic Ensemble Pruning Perspective on MoE

ICML 2026poster

We introduce Mahalanobis-Pruned Mixture-of-Experts (MP-MoE), a novel routing framework that approaches expert selection from the perspective of ensemble pruning. Existing Mixture-of-Experts (MoE) routing strategies often suffer from representation collapse due to greedy top-k selection mechanisms or…

Cited by 0SourceScholar
2026

CSD: Content-aware Speculative Decoding for Efficient Image Generation

ICML 2026poster

Speculative decoding (SD) has emerged as a key solution to accelerate the inference of autoregressive models. However, in the field of image generation, it faces the challenge of low acceptance rates, and directly relaxing its criteria leads to degradation in image quality. In this paper, we propose…

Cited by 0SourceScholar
2026

Entropy-aware Span-Constrained Optimal Transport for Robust Cross-Tokenizer Knowledge Distillation

ICML 2026poster

Existing Cross-Tokenizer Knowledge Distillation (CTKD) methods fail to outperform simple supervised fine-tuning when vocabulary overlap is low due to severe alignment noise. We identify this phenomenon as the **``Low-Overlap negative transfer regime,''** To overcome this, we propose **Entropy-aware …

Cited by 0SourceScholar
2026

Expert Merging: Model Merging with Unsupervised Expert Alignment and Importance-Guided Layer Chunking

ICLR 2026poster

Model merging, which combines multiple domain-specialized experts into a single model, offers a practical path to endow Large Language Models (LLMs) and Multimodal Large Language Models (MLLMs) with broad capabilities without the cost of joint training or serving many models. However, training-free…

Cited by 0SourcecodeScholar
2026

GenVidBench: A 6-Million Benchmark for AI-Generated Video Detection

AAAI 2026technical

The rapid advancement of video generation models has made it increasingly challenging to distinguish AI-generated videos from real ones. This issue underscores the urgent need for effective AI-generated video detectors to prevent the dissemination of false information via such videos. However, the d

Cited by 0SourcePDFScholar
2026

PPE: Positional Preservation Embedding for Token Compression in Multimodal Large Language Models

ICLR 2026poster

Multimodal large language models (MLLMs) have achieved strong performance on vision-language tasks, yet often suffer from inefficiencies due to redundant visual tokens. Existing token merging methods reduce sequence length but frequently disrupt spatial layouts and temporal continuity by disregardin…

Cited by 0SourcecodeScholar
2026

SJD-PAC: Accelerating Speculative Jacobi Decoding via Proactive Drafting and Adaptive Continuation

CVPR 2026

Speculative Jacobi Decoding (SJD) offers a draft-model-free approach to accelerate autoregressive text-to-image synthesis. However, the high-entropy nature of visual generation yields low draft-token acceptance rates in complex regions, creating a bottleneck that severely limits overall throughput.

Cited by 0SourceScholar
2026

Towards Efficient Large Language Reasoning Models via Extreme-Ratio Chain-of-Thought Compression

ICML 2026poster

Chain-of-Thought (CoT) reasoning successfully enhances the reasoning capabilities of Large Language Models (LLMs), yet it incurs substantial computational overhead for inference. Existing CoT compression methods often suffer from a critical loss of logical fidelity at high compression ratios, result…

Cited by 0SourceScholar
2026

UTPTrack: Towards Simple and Unified Token Pruning for Visual Tracking

CVPR 2026

One-stream Transformer-based trackers achieve advanced performance in visual object tracking suffer from significant computational overhead that hinders real-time deployment. While token pruning offers a path to efficiency, a critical limitation persists: no existing work performs pruning jointly ac

Cited by 0SourcecodeScholar
2026

VES-RFT: Rewarding Visual Evidence Sensitivity to Mitigate Hallucinations in Large Vision-Language Models

CVPR 2026

Vision-Language Models (VLMs) often over-rely on linguistic priors even when images are provided, leading to object hallucinations. We revisit object-wise hallucination from the perspective of how visual evidence shapes the model's uncertainty. For each input, we measure decision uncertainty with an

Cited by 0SourceScholar
2026

VLM-Pruner: Buffering for Spatial Sparsity in an Efficient VLM Centrifugal Token Pruning Paradigm

CVPR 2026

Vision-language models (VLMs) excel at image understanding tasks, but the large number of visual tokens imposes significant computational costs, hindering deployment on mobile devices. Many pruning methods rely solely on token importance and thus overlook inter-token redundancy, retaining numerous d

Cited by 0SourcecodeScholar
2026

What Makes Effective Supervision in Latent Chain-of-Thought: An Information-Theoretic Analysis

ICML 2026poster

Latent Chain-of-Thought (CoT) aims to internalize reasoning into continuous hidden states, promising to transcend the computational bottlenecks of explicit tokens. However, the precise mechanisms ensuring its validity remain opaque. To bridge this gap, we establish an Information-Theoretic Framework…

Cited by 0SourceScholar
2025

Align-KD: Distilling Cross-Modal Alignment Knowledge for Mobile Vision-Language Large Model Enhancement

CVPR 2025poster

Vision-Language Models (VLMs) bring powerful understanding and reasoning capabilities to multimodal tasks. Meanwhile, the great need for capable aritificial intelligence on mobile devices also arises, such as the AI assistant software. Some efforts try to migrate VLMs to edge devices to expand their…

2025

DECO: Unleashing the Potential of ConvNets for Query-based Detection and Segmentation

ICLR 2025poster

Transformer and its variants have shown great potential for various vision tasks in recent years, including image classification, object detection and segmentation. Meanwhile, recent studies also reveal that with proper architecture design, convolutional networks (ConvNets) also achieve competitive…

2025

MultiConIR: Towards Multi-Condition Information Retrieval

EMNLP 2025

Multi-condition information retrieval (IR) presents a significant, yet underexplored challenge for existing systems. This paper introduces MultiConIR, the first benchmark specifically designed to evaluate retrieval and reranking models under nuanced multi-condition query scenarios across five divers

2025

Multimodal Language Models See Better When They Look Shallower

EMNLP 2025

Multimodal large language models (MLLMs) typically extract visual features from the final layers of a pretrained Vision Transformer (ViT). This widespread deep-layer bias, however, is largely driven by empirical convention rather than principled analysis. While prior studies suggest that different V

2025

Single Domain Generalization for Few-Shot Counting via Universal Representation Matching

CVPR 2025poster

Few-shot counting estimates the number of target objects in an image using only a few annotated exemplars. However, domain shift severely hinders existing methods to generalize to unseen scenarios. This falls into the realm of single domain generalization that remains unexplored in few-shot countin…

2025

TimePro: Efficient Multivariate Long-term Time Series Forecasting with Variable- and Time-Aware Hyper-state

ICML 2025poster

In long-term time series forecasting, different variables often influence the target variable over distinct time intervals, a challenge known as the multi-delay issue. Traditional models typically process all variables or time points uniformly, which limits their ability to capture complex variable…

2025

TinySAM: Pushing the Envelope for Efficient Segment Anything Model

AAAI 2025technical

Recently segment anything model (SAM) has shown powerful segmentation capability and has drawn great attention in computer vision fields. Massive following works have developed various applications based on the pre-trained SAM and achieved impressive performance on downstream vision tasks. However,…

2025

Unveiling the Key Factors for Distilling Chain-of-Thought Reasoning

ACL 2025finding

Large Language Models (LLMs) excel in reasoning tasks through Chain-of-Thought (CoT) prompting. However, CoT prompting greatly increases computational demands, which has prompted growing interest in distilling CoT capabilities into Small Language Models (SLMs). This study systematically examines the…

2025

ViSpec: Accelerating Vision-Language Models with Vision-Aware Speculative Decoding

NeurIPS 2025poster

Speculative decoding is a widely adopted technique for accelerating inference in large language models (LLMs), yet its application to vision-language models (VLMs) remains underexplored, with existing methods achieving only modest speedups ($<1.5\times$). This gap is increasingly significant as mult…

Cited by 0SourceScholar
2024

ExCP: Extreme LLM Checkpoint Compression via Weight-Momentum Joint Shrinking

ICML 2024oral

Large language models (LLM) have recently attracted significant attention in the field of artificial intelligence. However, the training process of these models poses significant challenges in terms of computational and storage capacities, thus compressing checkpoints has become an urgent problem. I…

2024

GeminiFusion: Efficient Pixel-wise Multimodal Fusion for Vision Transformer

ICML 2024poster

Cross-modal transformers have demonstrated superiority in various vision tasks by effectively integrating different modalities. This paper first critiques prior token exchange methods which replace less informative tokens with inter-modal features, and demonstrate exchange based methods underperform…

2024

SLAB: Efficient Transformers with Simplified Linear Attention and Progressive Re-parameterized Batch Normalization

ICML 2024poster

Transformers have become foundational architectures for both natural language and computer vision tasks. However, the high computational cost makes it quite challenging to deploy on resource-constraint devices. This paper investigates the computational bottleneck modules of efficient transformer, *i…

2024

SSA-Seg: Semantic and Spatial Adaptive Pixel-level Classifier for Semantic Segmentation

NeurIPS 2024poster

Vanilla pixel-level classifiers for semantic segmentation are based on a certain paradigm, involving the inner product of fixed prototypes obtained from the training set and pixel features in the test image. This approach, however, encounters significant limitations, i.e., feature deviation in the…

Cited by 3SourcePDFScholar
2024

The Accuracy Paradox in RLHF: When Better Reward Models Don’t Yield Better Language Models

EMNLP 2024main

Reinforcement Learning from Human Feedback significantly enhances Natural Language Processing by aligning language models with human expectations. A critical factor in this alignment is the strength of reward models used during training. This study explores whether stronger reward models invariably…

2022

AdaBin: Improving Binary Neural Networks with Adaptive Binary Sets

ECCV 2022poster

"This paper studies the Binary Neural Networks (BNNs) in which weights and activations are both binarized into 1-bit values, thus greatly reducing the memory usage and computational complexity. Since the modern deep neural networks are of sophisticated design with complex architecture for the accura…

Cited by 76SourcePDFScholar
2022

AutoLoss-GMS: Searching Generalized Margin-Based Softmax Loss Function for Person Re-Identification

CVPR 2022poster

Person re-identification is a hot topic in computer vision, and the loss function plays a vital role in improving the discrimination of the learned features. However, most existing models utilize the hand-crafted loss functions, which are usually sub-optimal and challenging to be designed. In this p…

Cited by 29PDFScholar
2022

CMT: Convolutional Neural Networks Meet Vision Transformers

CVPR 2022poster

Vision transformers have been successfully applied to image recognition tasks due to their ability to capture long-range dependencies within an image. However, there are still gaps in both performance and computational cost between transformers and existing convolutional neural networks (CNNs). In t…

Cited by 954PDFcodeScholar
2022

Hire-MLP: Vision MLP via Hierarchical Rearrangement

CVPR 2022poster

Previous vision MLPs such as MLP-Mixer and ResMLP accept linearly flattened image patches as input, making them inflexible for different input sizes and hard to capture spatial information. Such approach withholds MLPs from getting comparable performance with their transformer-based counterparts and…

Cited by 140PDFcodeScholar
2022

Multimodal Token Fusion for Vision Transformers

CVPR 2022poster

Many adaptations of transformers have emerged to address the single-modal vision tasks, where self-attention modules are stacked to handle input sources like images. Intuitively, feeding multiple modalities of data to vision transformers could improve the performance, yet the inner-modal attentive w…

Cited by 217PDFcodeScholar
2022

Random Normalization Aggregation for Adversarial Defense

NeurIPS 2022accept

The vulnerability of deep neural networks has been widely found in various models as well as tasks where slight perturbations on the inputs could lead to incorrect predictions. These perturbed inputs are known as adversarial examples and one of the intriguing properties of them is Adversarial Transf…

2022

Spatial-Channel Token Distillation for Vision MLPs

ICML 2022spotlight

Recently, neural architectures with all Multi-layer Perceptrons (MLPs) have attracted great research interest from the computer vision community. However, the inefficient mixing of spatial-channel information causes MLP-like vision models to demand tremendous pre-training on large-scale datasets. Th…

Cited by 6SourcePDFScholar
2021

An Empirical Study of Adder Neural Networks for Object Detection

NeurIPS 2021poster

Adder neural networks (AdderNets) have shown impressive performance on image classification with only addition operations, which are more energy efficient than traditional convolutional neural networks built with multiplications. Compared with classification, there is a strong demand on reducing the…

Cited by 24SourcePDFScholar
2021

Data-Free Knowledge Distillation for Image Super-Resolution

CVPR 2021poster

Convolutional network compression methods require training data for achieving acceptable results, but training data is routinely unavailable due to some privacy and transmission limitations. Therefore, recent works focus on learning efficient networks without original training data, i.e., data-free…

Cited by 102PDFcodeScholar
2021

Distilling Object Detectors via Decoupled Features

CVPR 2021poster

Knowledge distillation is a widely used paradigm for inheriting information from a complicated teacher network to a compact student network and maintaining the strong performance. Different from image classification, object detectors are much more sophisticated with multiple loss functions in which…

Cited by 288PDFcodeScholar
2021

HourNAS: Extremely Fast Neural Architecture Search Through an Hourglass Lens

CVPR 2021poster

Neural Architecture Search (NAS) aims to automatically discover optimal architectures. In this paper, we propose an hourglass-inspired approach (HourNAS) for extremely fast NAS. It is motivated by the fact that the effects of the architecture often proceed from the vital few blocks. Acting like the…

Cited by 27PDFScholar
2021

Positive-Unlabeled Data Purification in the Wild for Object Detection

CVPR 2021poster

Deep learning based object detection approaches have achieved great progress with the benefit from large amount of labeled images. However, image annotation remains a laborious, time-consuming and error-prone process. To further improve the performance of detectors, we seek to exploit all available…

Cited by 15PDFScholar
2021

Winograd Algorithm for AdderNet

ICML 2021spotlight

Adder neural network (AdderNet) is a new kind of deep model that replaces the original massive multiplications in convolutions by additions while preserving the high performance. Since the hardware complexity of additions is much lower than that of multiplications, the overall energy consumption is…

Cited by 15SourcePDFScholar
2020

CARS: Continuous Evolution for Efficient Neural Architecture Search

CVPR 2020poster

Searching techniques in most of existing neural architecture search (NAS) algorithms are mainly dominated by differentiable methods for the efficiency reason. In contrast, we develop an efficient continuous evolutionary approach for searching neural networks. Architectures in the population that sha…

Cited by 310PDFcodeScholar
2020

Hit-Detector: Hierarchical Trinity Architecture Search for Object Detection

CVPR 2020poster

Neural Architecture Search (NAS) has achieved great success in image classification task. Some recent works have managed to explore the automatic design of efficient backbone or feature fusion layer for object detection. However, these methods focus on searching only one certain component of object…

Cited by 136PDFcodeScholar
2020

Kernel Based Progressive Distillation for Adder Neural Networks

NeurIPS 2020spotlight

Adder Neural Networks (ANNs) which only contain additions bring us a new way of developing deep neural networks with low energy consumption. Unfortunately, there is an accuracy drop when replacing all convolution filters by adder filters. The main reason here is the optimization difficulty of ANNs u…

Cited by 52SourcePDFScholar
2020

Optical Flow Distillation: Towards Efficient and Stable Video Style Transfer

ECCV 2020poster

Video style transfer techniques inspire many exciting applications on mobile devices. However, their efficiency and stability are still far from satisfactory. To boost the transfer stability across frames, optical flow is widely adopted, despite its high computational complexity, e.g., occupying ove…

Cited by 68SourcePDFScholar
2020

Weakly Supervised Segmentation Guided Hand Pose Estimation During Interaction with Unknown Objects

ICASSP 2020accepted

Hand pose estimation is important for human computer interaction, but the performance is not satisfying when the hand is interacting with objects. To alleviate the influence of unknown objects, we propose a novel weakly supervised segmentation guided scheme to estimate hand poses. Approximate hand m…

Cited by 0SourceScholar
2018

Depth-Based 3D Hand Pose Estimation: From Current Achievements to Future Goals

CVPR 2018poster

In this paper, we strive to answer two questions: What is the current state of 3D hand pose estimation from depth images? And, what are the next challenges that need to be tackled? Following the successful Hands In the Million Challenge (HIM2017), we investigate the top 10 state-of-the-art methods o…

Cited by 277SourcePDFScholar