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Pengwei Liu

10 accepted papers

2026

InfiMed-ORBIT: Aligning LLMs on Open-Ended Complex Tasks via Rubric-Based Incremental Training

ICML 2026poster

Reinforcement learning (RL) has powered many of the recent breakthroughs in large language models (LLMs), especially for tasks where rewards can be computed automatically, such as code generation. However, these methods deteriorate in open-ended domains like medical consultation, where feedback is i…

Cited by 0SourceScholar
2026

Lumos-1: On Autoregressive Video Generation with Discrete Diffusion from a Unified Model Perspective

ICLR 2026poster

Autoregressive large language models (LLMs) have unified a vast range of language tasks, inspiring preliminary efforts in autoregressive (AR) video generation. Existing AR video generators either diverge from standard LLM architectures, depend on bulky external text encoders, or incur prohibitive la…

Cited by 0SourcecodeScholar
2026

LumosX: Relate Any Identities with Their Attributes for Personalized Video Generation

ICLR 2026poster

Recent advances in diffusion models have significantly improved text-to-video generation, enabling personalized content creation with fine-grained control over both foreground and background elements. However, precise face–attribute alignment across subjects remains challenging, as existing methods…

Cited by 0SourcecodeScholar
2025

AeroGTO: An Efficient Graph-Transformer Operator for Learning Large-Scale Aerodynamics of 3D Vehicle Geometries

AAAI 2025technical

Obtaining high-precision aerodynamics in the automotive industry relies on large-scale simulations with computational fluid dynamics, which are generally time-consuming and computationally expensive. Recent advances in operator learning for partial differential equations offer promising improvements…

2025

Reviving Cultural Heritage: A Novel Approach for Comprehensive Historical Document Restoration

ACL 2025long

Historical documents represent an invaluable cultural heritage, yet have undergone significant degradation over time through tears, water erosion, and oxidation. Existing Historical Document Restoration (HDR) methods primarily focus on single modality or limited-size restoration, failing to meet pra…

2025

SAMora: Enhancing SAM through Hierarchical Self-Supervised Pre-Training for Medical Images

ICCV 2025poster

The Segment Anything Model (SAM) has demonstrated significant potential in medical image segmentation, yet its performance is limited when only a small amount of labeled data is available, while there are abundance of valuable yet often overlooked hierarchical information inherent in medical data. T…

2025

Uncertainty-Informed Meta Pseudo Labeling for Surrogate Modeling with Limited Labeled Data

NeurIPS 2025poster

Deep neural networks, particularly neural operators, provide an efficient alternative to costly simulations in surrogate modeling. However, their performance is often constrained by the need for large-scale labeled datasets, which are costly and challenging to acquire in many scientific domains. Sem…

Cited by 0SourcecodeScholar
2025

UniLumos: Fast and Unified Image and Video Relighting with Physics-Plausible Feedback

NeurIPS 2025poster

Relighting is a crucial task with both practical demand and artistic value, and recent diffusion models have shown strong potential by enabling rich and controllable lighting effects. However, as they are typically optimized in semantic latent space, where proximity does not guarantee physical corre…

Cited by 0SourcecodeScholar
2024

Leveraging Text Localization for Scene Text Removal via Text-aware Masked Image Modeling

ECCV 2024poster

"Existing scene text removal (STR) task suffers from insufficient training data due to the expensive pixel-level labeling. In this paper, we aim to address this issue by introducing a Text-aware Masked Image Modeling algorithm (TMIM), which can pretrain STR models with low-cost text detection labels…

2024

PAPM: A Physics-aware Proxy Model for Process Systems

ICML 2024poster

In the context of proxy modeling for process systems, traditional data-driven deep learning approaches frequently encounter significant challenges, such as substantial training costs induced by large amounts of data, and limited generalization capabilities. As a promising alternative, physics-aware…