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Xiangyu Zeng

21 accepted papers

2026

Balancing the Experts: Unlocking LoRA-MoE for GRPO via Mechanism-Aware Rewards

ICLR 2026poster

Parameter-efficient Mixture-of-Experts (MoE) architectures, such as LoRA-MoE, enable strong and generalizable fine-tuning. However, a critical problem arises when fine-tuning these architectures with advanced reinforcement learning algorithms such as Group Relative Policy Optimization (GRPO). Tradit…

Cited by 0SourceScholar
2026

RIVER: Real-time Video Interaction Benchmark

ICLR 2026poster

The rapid advancement of multimodal large language models has demonstrated impressive capabilities, yet nearly all operate in an offline paradigm, hindering real-time interactivity. Addressing this gap, we introduce the Real-tIme Video intERaction Bench (RIVER Bench), designed for evaluating online…

Cited by 0SourcecodeScholar
2026

ReaForest: Fostering Generative Video Reasoning for Spatial Planning

ICML 2026poster

Verbal logic and visual mental simulation are two essential components of human intelligence. Modern Large Language Models (LLMs) have demonstrated strong verbal reasoning capabilities through textual Chain-of-Thought (CoT) reasoning. In contrast, current Video Generation Models (VGMs) struggle with…

Cited by 0SourceScholar
2026

UniFlow: A Unified Pixel Flow Tokenizer for Visual Understanding and Generation

ICLR 2026poster

Tokenizer is a crucial component for both visual understanding and generation. To advance toward the ultimate goal of universal modeling, recent research has focused on developing a unified tokenizer. However, existing tokenizers face a significant performance trade-off between understanding and gen…

Cited by 0SourceScholar
2026

VideoChat-Flash: Hierarchical Compression for Long-Context Video Modeling

ICLR 2026poster

Long-context video modeling is critical for multimodal large language models (MLLMs), enabling them to process movies, online video streams, and so on. Despite its advances, handling long videos remains challenging due to the difficulty in efficiently understanding the extremely long video context.…

Cited by 0SourcecodeScholar
2026

VideoSeeker: Native Interleaved Clue Seeking for Long Video Multi-Hop Reasoning

ICML 2026poster

Existing multimodal large language models for long-video understanding predominantly rely on uniform sampling and single-turn inference, limiting their ability to identify sparse yet critical evidence amid extensive redundancy. We introduce VideoSeeker, a novel framework that supports iterative disc…

Cited by 13SourceScholar
2025

Deduction with Induction: Combining Knowledge Discovery and Reasoning for Interpretable Deep Reinforcement Learning

IJCAI 2025

Deep reinforcement learning (DRL) has achieved remarkable success in dynamic decision-making tasks. However, its inherent opacity and cold start problem hinder transparency and training efficiency. To address these challenges, we propose HRL-ID, a neural-symbolic framework that combines automated ru

2025

Make Your Training Flexible: Towards Deployment-Efficient Video Models

ICCV 2025poster

Current video training methods rely on fixed spatiotemporal sampling grids to extract a predetermined number of tokens, limiting adaptability to diverse computational budgets and resulting in suboptimal accuracy-computation trade-offs. This rigidity constrains high-performance models trained in reso…

2025

Online Video Understanding: OVBench and VideoChat-Online

CVPR 2025poster

Multimodal Large Language Models (MLLMs) have significantly progressed in offline video understanding. However, applying these models to real-world scenarios, such as autonomous driving and human-computer interaction, presents unique challenges due to the need for real-time processing of continuous…

Cited by 0SourcePDFScholar
2025

StreamForest: Efficient Online Video Understanding with Persistent Event Memory

NeurIPS 2025spotlight

Multimodal Large Language Models (MLLMs) have recently achieved remarkable progress in video understanding. However, their effectiveness in real-time streaming scenarios remains limited due to storage constraints of historical visual features and insufficient real-time spatiotemporal reasoning. To a…

Cited by 0SourceScholar
2025

Task Preference Optimization: Improving Multimodal Large Language Models with Vision Task Alignment

CVPR 2025poster

Current multimodal large language models (MLLMs) struggle with fine-grained or precise understanding of visuals although they give comprehensive perception and reasoning in a spectrum of vision applications. Recent studies either develop tool-using or unify specific visual tasks into the autoregress…

2025

TimeSuite: Improving MLLMs for Long Video Understanding via Grounded Tuning

ICLR 2025poster

Multimodal Large Language Models (MLLMs) have demonstrated impressive performance in short video understanding. However, understanding long-form videos still remains challenging for MLLMs. This paper proposes TimeSuite, a collection of new designs to adapt the existing short-form video MLLMs for lon…

Cited by 10SourcePDFScholar
2025

VideoChat-R1.5: Visual Test-Time Scaling to Reinforce Multimodal Reasoning by Iterative Perception

NeurIPS 2025poster

Inducing reasoning in multimodal large language models (MLLMs) is critical for achieving human-level perception and understanding. Existing methods mainly leverage LLM reasoning to analyze parsed visuals, often limited by static perception stages. This paper introduces Visual Test-Time Scaling (VTTS…

Cited by 0SourceScholar
2024

A Framework for Inference Inspired by Human Memory Mechanisms

ICLR 2024poster

How humans and machines make sense of current inputs for relation reasoning and question-answering while putting the perceived information into context of our past memories, has been a challenging conundrum in cognitive science and artificial intelligence. Inspired by human brain's memory system and…

2024

SDMTR: A Brain-inspired Transformer for Relation Inference

AISTATS 2024poster

Deep learning has seen a movement towards the concepts of modularity, module coordination and sparse interactions to fit the working principles of biological systems. Inspired by Global Workspace Theory and long-term memory system in human brain, both are instrumental in constructing biologically pl…

Cited by 0SourcePDFScholar
2024

Spatiotemporal Attention Enhances Lidar-Based Robot Navigation in Dynamic Environments

RA-L 2024

Foresighted robot navigation in dynamic indoor environments with cost-efficient hardware necessitates the use of a lightweight yet dependable controller. So inferring the scene dynamics from sensor readings without explicit object tracking is a pivotal aspect of foresighted navigation among pedestri

Cited by 23SourceScholar
2022

Deep Reinforcement Learning for Next-Best-View Planning in Agricultural Applications

ICRA 2022poster

Automated agricultural applications, i.e., fruit picking require spatial information about crops and, especially, their fruits. In this paper, we present a novel deep reinforcement learning (DRL) approach to determine the next best view for automatic exploration of 3D environments with a robotic arm…

Cited by 26SourceScholar
2022

Enhanced Spatial Attention Graph for Motion Planning in Crowded, Partially Observable Environments

ICRA 2022poster

Collision-free navigation while moving amongst static and dynamic obstacles with a limited sensor range is still a great challenge for modern mobile robots. Therefore, the ability to avoid collisions with obstacles in crowded, partially observable environments is one of the most important indicators…

Cited by 16SourceScholar
2021

Single View Physical Distance Estimation Using Human Pose

ICCV 2021poster

We propose a fully automated system that simultaneously estimates the camera intrinsics, the ground plane, and physical distances between people from a single RGB image or video captured by a camera viewing a 3-D scene from a fixed vantage point. To automate camera calibration and distance estimatio…

Cited by 11PDFScholar