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CHENG LI

57 accepted papers

2026

AdaCluster: Adaptive Query-Key Clustering for Sparse Attention in Video Generation

CVPR 2026

Video diffusion transformers (DiTs) suffer from prohibitive inference latency due to quadratic attention complexity. Existing sparse attention methods either overlook semantic similarity, or fail to adapt to heterogeneous token distributions across layers, leading to model performance degradation. W

Cited by 0SourcecodeScholar
2026

ReVeal: Self-Evolving Code Agents via Reliable Self-Verification

ICLR 2026poster

Reinforcement learning with verifiable rewards (RLVR) has advanced the reasoning capabilities of large language models. Howerer, existing methods rely solely on outcome rewards, without explicitly optimizing verification or leveraging reliable signals from realistic environments, leading to unreliab…

Cited by 0SourceScholar
2026

SMIDT: High-Performance Inference Framework for MoE Models with Dynamic Top-K Routing

AAAI 2026technical

To accelerate Mixture-of-Experts (MoE) inference, the hybrid parallelism paradigm is first applying pipeline parallelism (PP) to vertically divide the model into stages, with each stage further divided horizontally using tensor or expert parallelism. On the algorithm side, dynamic Top-K routing redu

Cited by 0SourcePDFScholar
2025

AVD2: Accident Video Diffusion for Accident Video Description

ICRA 2025

Traffic accidents present complex challenges for autonomous driving, often featuring unpredictable scenarios that hinder accurate system interpretation and responses. Nonetheless, prevailing methodologies fall short in elucidating the causes of accidents and proposing preventive measures due to the

Cited by 18SourcecodeScholar
2025

BigMac: A Communication-Efficient Mixture-of-Experts Model Structure for Fast Training and Inference

AAAI 2025technical

The Mixture-of-Experts (MoE) structure scales the Transformer-based large language models (LLMs) and improves their performance with only the sub-linear increase in computation resources. Recently, a fine-grained DeepSeekMoE structure is proposed, which can further improve the computing efficiency o…

2025

De-singularity Subgradient for the q-th-Powered lₚ-Norm Weber Location Problem

AAAI 2025technical

The Weber location problem is widely used in several artificial intelligence scenarios. However, the gradient of the objective does not exist at a considerable set of singular points. Recently, a de-singularity subgradient method has been proposed to fix this problem, but it can only handle the q-th…

2025

HATA: Trainable and Hardware-Efficient Hash-Aware Top-k Attention for Scalable Large Model Inference

ACL 2025finding

Large Language Models (LLMs) have emerged as a pivotal research area, yet the attention module remains a critical bottleneck in LLM inference, even with techniques like KVCache to mitigate redundant computations. While various top-k attention mechanisms have been proposed to accelerate LLM inference…

2025

World Knowledge-Enhanced Reasoning Using Instruction-Guided Interactor in Autonomous Driving

AAAI 2025technical

The Multi-modal Large Language Models (MLLMs) with extensive world knowledge have revitalized autonomous driving, particularly in reasoning tasks within perceivable regions. However, when faced with perception-limited areas (dynamic or static occlusion regions), MLLMs struggle to effectively integra…

Cited by 2SourcePDFScholar
2025

WuKong: Design, Modeling and Control of a Compact Flexible Hybrid Aerial-Aquatic Vehicle

RA-L 2025

The significant differences in the physical properties of air and water pose a substantial challenge for the development of hybrid aerial-aquatic vehicle (HAAV), which leading to increased prototype size, heavier thrusters, and reduced efficiency or under-actuation in one of the mediums. This letter

Cited by 9SourceScholar
2025

rStar-Coder: Scaling Competitive Code Reasoning with a Large-Scale Verified Dataset

NeurIPS 2025poster

Advancing code reasoning in large language models (LLMs) is fundamentally limited by the scarcity of high-difficulty datasets, especially those with verifiable input-output test cases necessary for rigorous solution validation at scale. We introduce rStar-Coder, which significantly improves LLM…

Cited by 0SourcecodeScholar
2024

AgentBank: Towards Generalized LLM Agents via Fine-Tuning on 50000+ Interaction Trajectories

EMNLP 2024finding

Fine-tuning on agent-environment interaction trajectory data holds significant promise for surfacing generalized agent capabilities in open-source large language models (LLMs). In this work, we introduce AgentBank, by far the largest trajectory tuning data collection featuring more than 50k diverse…

2024

Bridging the Preference Gap between Retrievers and LLMs

ACL 2024long

Large Language Models (LLMs) have demonstrated superior results across a wide range of tasks, and Retrieval-augmented Generation (RAG) is an effective way to enhance the performance by locating relevant information and placing it into the context window of the LLM. However, the relationship between…

Cited by 30SourcePDFScholar
2024

CultureLLM: Incorporating Cultural Differences into Large Language Models

NeurIPS 2024poster

Large language models (LLMs) have been observed to exhibit bias towards certain cultures due to the predominance of training data obtained from English corpora. Considering that multilingual cultural data is often expensive to procure, existing methodologies address this challenge through prompt eng…

2024

CulturePark: Boosting Cross-cultural Understanding in Large Language Models

NeurIPS 2024poster

Cultural bias is pervasive in many large language models (LLMs), largely due to the deficiency of data representative of different cultures. Typically, cultural datasets and benchmarks are constructed either by extracting subsets of existing datasets or by aggregating from platforms such as Wikipedi…

2024

Darkshot: Lighting Dark Images with Low-Compute and High-Quality

ICASSP 2024accepted

Nighttime photography encounters escalating challenges in extremely low-light conditions, primarily attributable to the ultra-low signal-to-noise ratio. For real-world deployment, a practical solution must not only produce visually appealing results but also require minimal computation. However, mos…

Cited by 0SourceScholar
2024

DeepSpeed Data Efficiency: Improving Deep Learning Model Quality and Training Efficiency via Efficient Data Sampling and Routing

AAAI 2024technical

Recent advances on deep learning models come at the price of formidable training cost. The increasing model size is one of the root causes, but another less-emphasized fact is that data scale is actually increasing at a similar speed as model scale, and the training cost is proportional to both of t…

2024

Exploring Post-training Quantization in LLMs from Comprehensive Study to Low Rank Compensation

AAAI 2024technical

Post-training quantization (PTQ) has emerged as a promising technique for mitigating memory consumption and computational costs in large language models (LLMs). However, a systematic examination of various quantization schemes, model families, and quantization bit precision has been absent from the…

Cited by 25SourcePDFScholar
2024

FlingFlow: LLM-Driven Dynamic Strategies for Efficient Cloth Flattening

RA-L 2024

The proficiency of robots in cloth manipulation is crucial for their potential widespread deployment in household service contexts, with the task of unfolding cloth being particularly indispensable. Unlike rigid objects, cloth has a high-dimensional state space, which poses significant challenges fo

Cited by 7SourceScholar
2024

InCharacter: Evaluating Personality Fidelity in Role-Playing Agents through Psychological Interviews

ACL 2024long

Role-playing agents (RPAs), powered by large language models, have emerged as a flourishing field of applications. However, a key challenge lies in assessing whether RPAs accurately reproduce the personas of target characters, namely their character fidelity. Existing methods mainly focus on the kno…

2024

NegativePrompt: Leveraging Psychology for Large Language Models Enhancement via Negative Emotional Stimuli

IJCAI 2024poster

Large Language Models (LLMs) have become integral to a wide spectrum of applications, ranging from traditional computing tasks to advanced artificial intelligence (AI) applications. This widespread adoption has spurred extensive research into LLMs across various disciplines, including the social sci…

2024

Physical-Based Event Camera Simulator

ECCV 2024poster

"Existing event camera simulators primarily focus on the process of generating video events and often overlook the entire optical path in real-world camera systems. To address this limitation, we propose a novel Physical-based Event Camera Simulator (PECS), which is able to generate a high-fidelity…

2024

Retrieval Augmented Generation or Long-Context LLMs? A Comprehensive Study and Hybrid Approach

EMNLP 2024industry

Retrieval Augmented Generation (RAG) has been a powerful tool for Large Language Models (LLMs) to efficiently process overly lengthy contexts. However, recent LLMs like Gemini-1.5 and GPT-4 show exceptional capabilities to understand long contexts directly. We conduct a comprehensive comparison betw…

Cited by 33SourcePDFScholar
2024

Self-Distillation Regularized Connectionist Temporal Classification Loss for Text Recognition: A Simple Yet Effective Approach

AAAI 2024technical

Text recognition methods are gaining rapid development. Some advanced techniques, e.g., powerful modules, language models, and un- and semi-supervised learning schemes, consecutively push the performance on public benchmarks forward. However, the problem of how to better optimize a text recognition…

2024

The Good, The Bad, and Why: Unveiling Emotions in Generative AI

ICML 2024poster

Emotion significantly impacts our daily behaviors and interactions. While recent generative AI models, such as large language models, have shown impressive performance in various tasks, it remains unclear whether they truly comprehend emotions and why. This paper aims to address this gap by incorpor…

Cited by 16SourcePDFScholar
2024

VPTQ: Extreme Low-bit Vector Post-Training Quantization for Large Language Models

EMNLP 2024main

Scaling model size significantly challenges the deployment and inference of Large Language Models (LLMs). Due to the redundancy in LLM weights, recent research has focused on pushing weight-only quantization to extremely low-bit (even down to 2 bits). It reduces memory requirements, optimizes storag…

2024

Watch Every Step! LLM Agent Learning via Iterative Step-level Process Refinement

EMNLP 2024main

Large language model agents have exhibited exceptional performance across a range of complex interactive tasks. Recent approaches have utilized tuning with expert trajectories to enhance agent performance, yet they primarily concentrate on outcome rewards, which may lead to errors or suboptimal acti…

2023

DySR: Adaptive Super-Resolution via Algorithm and System Co-design

ICLR 2023poster

Super resolution (SR) is a promising approach for improving the quality of low resolution steaming services on mobile devices. On mobile devices, the available computing and memory resources change dynamically depending on other running applications. Due to the high computation and memory demands of…

Cited by 1SourcePDFScholar
2023

Human-Robot Deformation Manipulation Skill Transfer: Sequential Fabric Unfolding Method For Robots

RA-L 2023

Deformable object manipulation has been considered a challenging task for robots for its complex dynamics and the infinite dimensional configuration space. Fabric unfolding manipulation takes on critical significance in the textile industry and household services. Accordingly, enabling robots to pos

Cited by 5SourceScholar
2023

Style Projected Clustering for Domain Generalized Semantic Segmentation

CVPR 2023poster

Existing semantic segmentation methods improve generalization capability, by regularizing various images to a canonical feature space. While this process contributes to generalization, it weakens the representation inevitably. In contrast to existing methods, we instead utilize the difference betwee…

Cited by 40SourcePDFScholar
2023

Toward RAW Object Detection: A New Benchmark and a New Model

CVPR 2023poster

In many computer vision applications (e.g., robotics and autonomous driving), high dynamic range (HDR) data is necessary for object detection algorithms to handle a variety of lighting conditions, such as strong glare. In this paper, we aim to achieve object detection on RAW sensor data, which natur…

Cited by 28SourcePDFScholar
2023

Understanding Int4 Quantization for Language Models: Latency Speedup, Composability, and Failure Cases

ICML 2023poster

Improving the deployment efficiency of transformer-based language models has been challenging given their high computation and memory cost. While INT8 quantization has recently been shown to be effective in reducing both the memory cost and latency while preserving model accuracy, it remains unclear…

Cited by 51SourcePDFScholar
2023

Unsupervised Paraphrasing under Syntax Knowledge

AAAI 2023technical

The soundness of syntax is an important issue for the paraphrase generation task. Most methods control the syntax of paraphrases by embedding the syntax and semantics in the generation process, which cannot guarantee the syntactical correctness of the results. Different from them, in this paper we…

Cited by 4SourcePDFScholar
2021

Efficient Multi-Stage Video Denoising With Recurrent Spatio-Temporal Fusion

CVPR 2021poster

In recent years, denoising methods based on deep learning have achieved unparalleled performance at the cost of large computational complexity. In this work, we propose an Efficient Multi-stage Video Denoising algorithm, called EMVD, to drastically reduce the complexity while maintaining or even imp…

Cited by 73PDFScholar
2021

Improving Query Graph Generation for Complex Question Answering over Knowledge Base

EMNLP 2021main

Most of the existing Knowledge-based Question Answering (KBQA) methods first learn to map the given question to a query graph, and then convert the graph to an executable query to find the answer. The query graph is typically expanded progressively from the topic entity based on a sequence predictio…

Cited by 21SourcePDFScholar
2021

Robustness Testing of Language Understanding in Task-Oriented Dialog

ACL 2021long

Most language understanding models in task-oriented dialog systems are trained on a small amount of annotated training data, and evaluated in a small set from the same distribution. However, these models can lead to system failure or undesirable output when being exposed to natural language perturba…

2021

VIL-100: A New Dataset and a Baseline Model for Video Instance Lane Detection

ICCV 2021poster

Lane detection plays a key role in autonomous driving. While car cameras always take streaming videos on the way, current lane detection works mainly focus on individual images (frames) by ignoring dynamics along the video. In this work, we collect a new video instance lane detection (VIL-100) datas…

Cited by 63PDFcodeScholar
2020

Accelerated Bayesian Optimisation through Weight-Prior Tuning

AISTATS 2020poster

Bayesian optimization (BO) is a widely-used method for optimizing expensive (to evaluate) problems. At the core of most BO methods is the modeling of the objective function using a Gaussian Process (GP) whose covariance is selected from a set of standard covariance functions. From a weight-space v…

2019

Deep Comprehensive Correlation Mining for Image Clustering

ICCV 2019poster

Recent developed deep unsupervised methods allow us to jointly learn representation and cluster unlabelled data. These deep clustering methods %like DAC start with mainly focus on the correlation among samples, e.g., selecting high precision pairs to gradually tune the feature representation, which…

Cited by 242PDFcodeScholar
2019

Delving Deep Into Hybrid Annotations for 3D Human Recovery in the Wild

ICCV 2019poster

Though much progress has been achieved in single-image 3D human recovery, estimating 3D model for in-the-wild images remains a formidable challenge. The reason lies in the fact that obtaining high-quality 3D annotations for in-the-wild images is an extremely hard task that consumes enormous amount o…

Cited by 73PDFScholar
2019

TransGaGa: Geometry-Aware Unsupervised Image-To-Image Translation

CVPR 2019poster

Unsupervised image-to-image translation aims at learning a mapping between two visual domains. However, learning a translation across large geometry variations al- ways ends up with failure. In this work, we present a novel disentangle-and-translate framework to tackle the complex objects image-to-i…

Cited by 135PDFScholar
2018

Pose-Robust Face Recognition via Deep Residual Equivariant Mapping

CVPR 2018poster

Face recognition achieves exceptional success thanks to the emergence of deep learning. However, many contemporary face recognition models still perform relatively poor in processing profile faces compared to frontal faces. A key reason is that the number of frontal and profile training faces are hi…

Cited by 185SourcePDFScholar
2018

ReenactGAN: Learning to Reenact Faces via Boundary Transfer

ECCV 2018poster

We present a novel learning-based framework for face reenactment. The proposed method, known as ReenactGAN, is capable of transferring facial movements and expressions from an arbitrary person’s monocular video input to a target person’s video. Instead of performing a direct transfer in the pixel sp…

2018

The Devil of Face Recognition is in the Noise

ECCV 2018poster

The growing scale of face recognition datasets empowers us to train strong convolutional networks for face recognition. While a variety of architectures and loss functions have been devised, we still have a limited understanding of the source and consequence of label noise inherent in existing datas…

2017

High Dimensional Bayesian Optimization with Elastic Gaussian Process

ICML 2017poster

Bayesian optimization is an efficient way to optimize expensive black-box functions such as designing a new product with highest quality or hyperparameter tuning of a machine learning algorithm. However, it has a serious limitation when the parameter space is high-dimensional as Bayesian optimizatio…

Cited by 142SourcePDFScholar
2017

Residual Attention Network for Image Classification

CVPR 2017spotlight

In this work, we propose "Residual Attention Network", a convolutional neural network using attention mechanism which can incorporate with state-of-art feed forward network architecture in an end-to-end training fashion. Our Residual Attention Network is built by stacking Attention Modules which gen…

Cited by 4712PDFScholar