← Search

Chenyu You

32 accepted papers

2026

CSRv2: Unlocking Ultra-Sparse Embeddings

ICLR 2026poster

In the era of large foundation models, the quality of embeddings has become a central determinant of downstream task performance and overall system capability. Yet widely used dense embeddings are often extremely high-dimensional (e.g., 4096), incurring substantial costs in storage, memory, and inf…

Cited by 0SourcecodeScholar
2026

CoMA: Compositional Human Motion Generation with Multi-modal Agents

AAAI 2026technical

3D human motion generation has seen substantial advancement in recent years. While state-of-the-art approaches have improved performance significantly, they still struggle with complex and detailed motions unseen in training data, largely due to the scarcity of motion datasets and the prohibitive co

Cited by 0SourcePDFScholar
2026

HorizonForge: Driving Scene Editing with Any Trajectories and Any Vehicles

CVPR 2026

Controllable driving scene generation is critical for realistic and scalable autonomous driving simulation, yet existing approaches struggle to jointly achieve photorealism and precise control. We introduce HorizonForge, a unified framework that reconstructs scenes as editable Gaussian Splats and Me

Cited by 0SourceScholar
2026

Let EEG Models Learn EEG

ICML 2026poster

High-fidelity EEG generation is critical for alleviating data scarcity and addressing privacy constraints in large-scale neural modeling. Despite recent progress, most existing approaches formulate EEG generation via discrete denoising objectives, which inadequately reflect the inherently continuous…

Cited by 0SourceScholar
2026

No More K-means: Single-Stage Sparse Coding for Efficient Multi-Vector Retrieval

ICML 2026poster

Multi-vector retrieval (MVR) models, exemplified by ColBERT, have established new benchmarks in retrieval accuracy by preserving fine-grained token-level interactions. However, this granularity imposes prohibitive storage and retrieval efficiency bottlenecks: to manage the immense memory footprint a…

Cited by 0SourceScholar
2026

Scaling Attention via Feature Sparsity

ICLR 2026poster

Scaling Transformers to ultra-long contexts is bottlenecked by the $O(n^2 d)$ cost of self-attention. Existing methods reduce this cost along the sequence axis through local windows, kernel approximations, or token-level sparsity, but these approaches consistently degrade accuracy. In this paper, we…

Cited by 0SourcecodeScholar
2026

Supervise Less, See More: Training-free Nuclear Instance Segmentation with Prototype-Guided Prompting

ICML 2026poster

Accurate nuclear instance segmentation is a pivotal task in computational pathology, supporting data-driven clinical insights and facilitating downstream translational applications. While large vision foundation models have shown promise for zero-shot biomedical segmentation, most existing approache…

Cited by 0SourceScholar
2026

When to Think, When to Speak: Learning Disclosure Policies for Large Language Model Reasoning

ICML 2026poster

Standard Chain-of-Thought (CoT) reasoning trades reliability for responsiveness: in a single user-visible token stream, more deliberation delays meaningful output, imposing a ``silence tax.'' We introduce \emph{Side-by-Side (SxS) Interleaved Reasoning}, a training framework that makes \emph{disclosu…

Cited by 0SourceScholar
2025

Beyond Matryoshka: Revisiting Sparse Coding for Adaptive Representation

ICML 2025oral

Many large-scale systems rely on high-quality deep representations (embeddings) to facilitate tasks like retrieval, search, and generative modeling. Matryoshka Representation Learning (MRL) recently emerged as a solution for adaptive embedding lengths, but it requires full model retraining and suffe…

2025

DocAgent: An Agentic Framework for Multi-Modal Long-Context Document Understanding

EMNLP 2025

Recent advances in large language models (LLMs) have demonstrated significant promise in document understanding and question-answering. Despite the progress, existing approaches can only process short documents due to limited context length or fail to fully leverage multi-modal information. In this

2025

Martian World Model: Controllable Video Synthesis with Physically Accurate 3D Reconstructions

NeurIPS 2025poster

The synthesis of realistic Martian landscape videos, essential for mission rehearsal and robotic simulation, presents unique challenges. These primarily stem from the scarcity of high-quality Martian data and the significant domain gap relative to terrestrial imagery. To address these challenges, we…

Cited by 0SourceScholar
2025

Ouroboros: Single-step Diffusion Models for Cycle-consistent Forward and Inverse Rendering

ICCV 2025poster

While multi-step diffusion models have advanced both forward and inverse rendering, existing approaches often treat these problems independently, leading to cycle inconsistency and slow inference speed. In this work, we present Ouroboros, a framework composed of two single-step diffusion models that…

Cited by 0SourcePDFScholar
2025

UniHGKR: Unified Instruction-aware Heterogeneous Knowledge Retrievers

NAACL 2025long

Existing information retrieval (IR) models often assume a homogeneous structure for knowledge sources and user queries, limiting their applicability in real-world settings where retrieval is inherently heterogeneous and diverse. In this paper, we introduce UniHGKR, a unified instruction-aware hetero…

2025

Why Prompt Design Matters and Works: A Complexity Analysis of Prompt Search Space in LLMs

ACL 2025long

Despite the remarkable successes of Large Language Models (LLMs), the underlying Transformer architecture has inherent limitations in handling complex reasoning tasks. Chain-of-Thought (CoT) prompting has emerged as a practical workaround, but most CoT-based methods rely on a single generic prompt l…

2024

Calibrating Multi-modal Representations: A Pursuit of Group Robustness without Annotations

CVPR 2024poster

Fine-tuning pre-trained vision-language models like CLIP has yielded success on diverse downstream tasks. However several pain points persist for this paradigm: (i) directly tuning entire pre-trained models becomes both time-intensive and computationally costly. Additionally these tuned models tend…

2024

Multi-Relational Structural Entropy

UAI 2024poster

Structural Entropy (SE) measures the structural information contained in a graph. Minimizing or maximizing SE helps to reveal or obscure the intrinsic structural patterns underlying graphs in an interpretable manner, finding applications in various tasks driven by networked data. However, SE ignores…

2024

Strategic Preys Make Acute Predators: Enhancing Camouflaged Object Detectors by Generating Camouflaged Objects

ICLR 2024poster

Camouflaged object detection (COD) is the challenging task of identifying camouflaged objects visually blended into surroundings. Albeit achieving remarkable success, existing COD detectors still struggle to obtain precise results in some challenging cases. To handle this problem, we draw inspiratio…

2023

Benchmarking Large Language Models on CMExam - A comprehensive Chinese Medical Exam Dataset

NeurIPS 2023poster

Recent advancements in large language models (LLMs) have transformed the field of question answering (QA). However, evaluating LLMs in the medical field is challenging due to the lack of standardized and comprehensive datasets. To address this gap, we introduce CMExam, sourced from the Chinese Natio…

2023

Large Language Models Are Partially Primed in Pronoun Interpretation

ACL 2023findings

While a large body of literature suggests that large language models (LLMs) acquire rich linguistic representations, little is known about whether they adapt to linguistic biases in a human-like way. The present study probes this question by asking whether LLMs display human-like referential biases…

2023

Multimodal Prompt Learning for Product Title Generation with Extremely Limited Labels

ACL 2023findings

Generating an informative and attractive title for the product is a crucial task for e-commerce. Most existing works follow the standard multimodal natural language generation approaches, e.g., image captioning, and employ the large scale of human-labelled datasets to train desirable models. However…

Cited by 6SourcePDFScholar
2023

Rethinking Semi-Supervised Medical Image Segmentation: A Variance-Reduction Perspective

NeurIPS 2023poster

For medical image segmentation, contrastive learning is the dominant practice to improve the quality of visual representations by contrasting semantically similar and dissimilar pairs of samples. This is enabled by the observation that without accessing ground truth labels, negative examples with tr…

2022

Class-Aware Adversarial Transformers for Medical Image Segmentation

NeurIPS 2022accept

Transformers have made remarkable progress towards modeling long-range dependencies within the medical image analysis domain. However, current transformer-based models suffer from several disadvantages: (1) existing methods fail to capture the important features of the images due to the naive tokeni…

Cited by 163SourcePDFScholar
2022

End-to-end Spoken Conversational Question Answering: Task, Dataset and Model

NAACL 2022findings

In spoken question answering, the systems are designed to answer questions from contiguous text spans within the related speech transcripts. However, the most natural way that human seek or test their knowledge is via human conversations. Therefore, we propose a new Spoken Conversational Question An…

Cited by 37SourcePDFScholar
2022

KerGNNs: Interpretable Graph Neural Networks with Graph Kernels

AAAI 2022technical

Graph kernels are historically the most widely-used technique for graph classification tasks. However, these methods suffer from limited performance because of the hand-crafted combinatorial features of graphs. In recent years, graph neural networks (GNNs) have become the state-of-the-art method in…

2022

Retrieve, Reason, and Refine: Generating Accurate and Faithful Patient Instructions

NeurIPS 2022accept

The "Patient Instruction" (PI), which contains critical instructional information provided both to carers and to the patient at the time of discharge, is essential for the patient to manage their condition outside hospital. An accurate and easy-to-follow PI can improve the self-management of patient…

2021

Adaptive Bi-Directional Attention: Exploring Multi-Granularity Representations for Machine Reading Comprehension

ICASSP 2021accepted

Recently, the attention-enhanced multi-layer encoder, such as Transformer, has been extensively studied in Machine Reading Comprehension (MRC). To predict the answer, it is common practice to employ a predictor to draw information only from the final encoder layer which generates the coarse-grained…

Cited by 0SourceScholar
2021

Auto-Encoding Knowledge Graph for Unsupervised Medical Report Generation

NeurIPS 2021poster

Medical report generation, which aims to automatically generate a long and coherent report of a given medical image, has been receiving growing research interests. Existing approaches mainly adopt a supervised manner and heavily rely on coupled image-report pairs. However, in the medical domain, bui…

Cited by 135SourcePDFScholar
2021

MRD-Net: Multi-Modal Residual Knowledge Distillation for Spoken Question Answering

IJCAI 2021poster

Spoken question answering (SQA) has recently drawn considerable attention in the speech community. It requires systems to find correct answers from the given spoken passages simultaneously. The common SQA systems consist of the automatic speech recognition (ASR) module and text-based question answer…

Cited by 37SourcePDFScholar
2021

Self-supervised Contrastive Cross-Modality Representation Learning for Spoken Question Answering

EMNLP 2021finding

Spoken question answering (SQA) requires fine-grained understanding of both spoken documents and questions for the optimal answer prediction. In this paper, we propose novel training schemes for spoken question answering with a self-supervised training stage and a contrastive representation learning…

Cited by 61SourcePDFScholar
2021

Undistillable: Making A Nasty Teacher That CANNOT teach students

ICLR 2021spotlight

Knowledge Distillation (KD) is a widely used technique to transfer knowledge from pre-trained teacher models to (usually more lightweight) student models. However, in certain situations, this technique is more of a curse than a blessing. For instance, KD poses a potential risk of exposing intellect…