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Guo Chen

29 accepted papers

2026

AV-Reasoner: Improving and Benchmarking Clue-Grounded Audio-Visual Counting for MLLMs

CVPR 2026

Despite progress in video understanding, current MLLMs struggle with counting tasks. Existing benchmarks are limited by short videos, close-set queries, lack of clue annotations, and weak multimodal coverage. In this paper, we introduce CG-AV-Counting, a manually-annotated clue-grounded counting ben

Cited by 0SourcecodeScholar
2026

Boosting Adversarial Transferability via Ensemble Non-Attention

AAAI 2026technical

Ensemble attacks integrate the outputs of surrogate models with diverse architectures, which can be combined with various gradient-based attacks to improve adversarial transferability. However, previous work shows unsatisfactory attack performance when transferring across heterogeneous model archite

Cited by 0SourcePDFScholar
2026

FED-GAME: PERSONALIZED FEDERATED LEARNING WITH GRAPH ATTENTION MIXTURE-OF-EXPERTS FOR TIME-SERIES FORECASTING

ICASSP 2026oral

Federated learning (FL) on graphs shows promise for distributed time-series forecasting. Yet, existing methods rely on static topologies and struggle with client heterogeneity. We propose Fed-GAME, a framework that models personalized aggregation as message passing over a learnable dynamic implicit…

Cited by 0SourcePDFScholar
2026

Grounding and Enhancing Informativeness and Utility in Dataset Distillation

ICLR 2026poster

Dataset Distillation (DD) seeks to create a compact dataset from a large, real-world dataset. While recent methods often rely on heuristic approaches to balance efficiency and quality, the fundamental relationship between original and synthetic data remains underexplored. This paper revisits knowled…

Cited by 0SourceScholar
2026

LiR3AG: A Lightweight Rerank Reasoning Strategy Framework for Retrieval-Augmented Generation

AAAI 2026technical

Retrieval-Augmented Generation (RAG) effectively enhances Large Language Models (LLMs) by incorporating retrieved external knowledge into the generation process. Reasoning models improve LLM performance in multi-hop QA tasks, which require integrating and reasoning over multiple pieces of evidence

Cited by 0SourcePDFScholar
2026

Memento: Toward an All-Day Proactive Assistant for Ultra-Long Streaming Video

ICLR 2026poster

Multimodal large language models have demonstrated impressive capabilities in visual-language understanding, particularly in offline video tasks. More recently, the emergence of online video modeling has introduced early forms of active interaction. However, existing models, typically limited to ten…

Cited by 0SourceScholar
2026

OPUS: Towards Efficient and Principled Data Selection in Large Language Model Pre-training in Every Iteration

ICML 2026oral

As high-quality public text approaches exhaustion, a phenomenon known as the Data Wall—LLM pre-training is shifting from more tokens to better tokens. However, existing methods either rely on heuristic static filters that ignore training dynamics, or use dynamic yet optimizer-agnostic criteria based…

Cited by 0SourceScholar
2026

Self-Indexing KVCache: Predicting Sparse Attention from Compressed Keys

AAAI 2026technical

The KV cache in self-attention has emerged as a major bottleneck in long-context and large-batch inference for LLMs. Existing approaches often treat sparsity prediction and compression as separate modules—relying on auxiliary index structures to select relevant tokens, and on complex quantization sc

Cited by 0SourcePDFScholar
2026

VideoITG: Multimodal Video Understanding with Instructed Temporal Grounding

CVPR 2026

While Video Large Language Models (Video-LLMs) have shown significant potential in multimodal understanding and reasoning tasks, how to efficiently select the most informative frames from videos remains a critical challenge. Existing methods attempt to optimize frame sampling by reducing inter-frame

Cited by 0SourcecodeScholar
2025

CG-Bench: Clue-grounded Question Answering Benchmark for Long Video Understanding

ICLR 2025poster

The existing video understanding benchmarks for multimodal large language models (MLLMs) mainly focus on short videos. The few benchmarks for long video understanding often rely on multiple-choice questions (MCQs). Due to the limitations of MCQ evaluations and the advanced reasoning abilities of MLL…

Cited by 5SourcePDFScholar
2025

Eagle 2.5: Boosting Long-Context Post-Training for Frontier Vision-Language Models

NeurIPS 2025poster

We introduce Eagle2.5, a frontier vision-language model (VLM) for long-context multimodal learning. Our work addresses the challenges in long video comprehension and high-resolution image understanding, introducing a generalist framework for both tasks. The proposed training framework incorporates A…

Cited by 0SourceScholar
2025

EgoExo-Gen: Ego-centric Video Prediction by Watching Exo-centric Videos

ICLR 2025poster

Generating videos in the first-person perspective has broad application prospects in the field of augmented reality and embodied intelligence. In this work, we explore the cross-view video prediction task, where given an exo-centric video, the first frame of the corresponding ego-centric video, and…

Cited by 0SourcePDFScholar
2025

EgoExoBench: A Benchmark for First- and Third-person View Video Understanding in MLLMs

NeurIPS 2025poster

Transferring and integrating knowledge across first-person (egocentric) and third-person (exocentric) viewpoints is intrinsic to human intelligence, enabling humans to learn from others and convey insights from their own experiences. Despite rapid progress in multimodal large language models (MLLMs)…

Cited by 0SourceScholar
2025

EgoThinker: Unveiling Egocentric Reasoning with Spatio-Temporal CoT

NeurIPS 2025poster

Egocentric video reasoning centers on an unobservable agent behind the camera who dynamically shapes the environment, requiring inference of hidden intentions and recognition of fine-grained interactions. This core challenge limits current multimodal large language models (MLLMs), which excel at vis…

Cited by 0SourceScholar
2025

Egocentric Object-Interaction Anticipation with Retentive and Predictive Learning

IJCAI 2025

Egocentric object-interaction anticipation is critical for applications like augmented reality and robotics, but existing methods struggle with misaligned egocentric encoding, insufficient supervision, and underutilized historical context. These limitations stem from a lack of focus on retention, i.

Cited by 0SourcePDFScholar
2025

Modeling Fine-Grained Hand-Object Dynamics for Egocentric Video Representation Learning

ICLR 2025poster

In egocentric video understanding, the motion of hands and objects as well as their interactions play a significant role by nature. However, existing egocentric video representation learning methods mainly focus on aligning video representation with high-level narrations, overlooking the intricate d…

2025

SonicSim: A customizable simulation platform for speech processing in moving sound source scenarios

ICLR 2025poster

Systematic evaluation of speech separation and enhancement models under moving sound source conditions requires extensive and diverse data. However, real-world datasets often lack sufficient data for training and evaluation, and synthetic datasets, while larger, lack acoustic realism. Consequently,…

2025

TIGER: Time-frequency Interleaved Gain Extraction and Reconstruction for Efficient Speech Separation

ICLR 2025poster

In recent years, much speech separation research has focused primarily on improving model performance. However, for low-latency speech processing systems, high efficiency is equally important. Therefore, we propose a speech separation model with significantly reduced parameters and computational cos…

Cited by 0SourcePDFScholar
2024

AVSegFormer: Audio-Visual Segmentation with Transformer

AAAI 2024technical

Audio-visual segmentation (AVS) aims to locate and segment the sounding objects in a given video, which demands audio-driven pixel-level scene understanding. The existing methods cannot fully process the fine-grained correlations between audio and visual cues across various situations dynamically. T…

2024

EgoExoLearn: A Dataset for Bridging Asynchronous Ego- and Exo-centric View of Procedural Activities in Real World

CVPR 2024poster

Being able to map the activities of others into one's own point of view is one fundamental human skill even from a very early age. Taking a step toward understanding this human ability we introduce EgoExoLearn a large-scale dataset that emulates the human demonstration following process in which ind…

2024

InternVL: Scaling up Vision Foundation Models and Aligning for Generic Visual-Linguistic Tasks

CVPR 2024poster

The exponential growth of large language models (LLMs) has opened up numerous possibilities for multi-modal AGI systems. However the progress in vision and vision-language foundation models which are also critical elements of multi-modal AGI has not kept pace with LLMs. In this work we design a larg…

2024

InternVid: A Large-scale Video-Text Dataset for Multimodal Understanding and Generation

ICLR 2024spotlight

This paper introduces InternVid, a large-scale video-centric multimodal dataset that enables learning powerful and transferable video-text representations for multimodal understanding and generation. InternVid contains over 7 million videos lasting nearly 760K hours, yielding 234M video clips accomp…

2024

InternVideo2: Scaling Foundation Models for Multimodal Video Understanding

ECCV 2024poster

"We introduce , a new family of video foundation models (ViFM) that achieve the state-of-the-art results in video recognition, video-text tasks, and video-centric dialogue. Our core design is a progressive training approach that unifies the masked video modeling, crossmodal contrastive learning, and…

2024

MVBench: A Comprehensive Multi-modal Video Understanding Benchmark

CVPR 2024highlight

With the rapid development of Multi-modal Large Language Models (MLLMs) a number of diagnostic benchmarks have recently emerged to evaluate the comprehension capabilities of these models. However most benchmarks predominantly assess spatial understanding in the static image tasks while overlooking t…

2024

NeuralIndicator: Implicit Surface Reconstruction from Neural Indicator Priors

ICML 2024poster

The neural implicit surface reconstruction from unorganized points is still challenging, especially when the point clouds are incomplete and/or noisy with complex topology structure. Unlike previous approaches performing neural implicit surface learning relying on local shape priors, this paper prop…

Cited by 1SourcePDFScholar
2024

Retrieval-Augmented Egocentric Video Captioning

CVPR 2024poster

Understanding human actions from videos of first-person view poses significant challenges. Most prior approaches explore representation learning on egocentric videos only while overlooking the potential benefit of exploiting existing large-scale third-person videos. In this paper (1) we develop EgoI…

Cited by 38SourcePDFScholar
2023

Memory-and-Anticipation Transformer for Online Action Understanding

ICCV 2023poster

Most existing forecasting systems are memory-based methods, which attempt to mimic human forecasting ability by employing various memory mechanisms and have progressed in temporal modeling for memory dependency. Nevertheless, an obvious weakness of this paradigm is that it can only model limited his…

Cited by 43PDFcodeScholar
2022

DCAN: Improving Temporal Action Detection via Dual Context Aggregation

AAAI 2022technical

Temporal action detection aims to locate the boundaries of action in the video. The current method based on boundary matching enumerates and calculates all possible boundary matchings to generate proposals. However, these methods neglect the long-range context aggregation in boundary prediction. At…

2022

Histogram-Guided Semantic-Aware Colorization

ICASSP 2022accepted

User-guided colorization can predict the colors of a grayscale image according to user inputs, including exemplar images, local inputs and global inputs. Global inputs-based methods are probably the easiest ones to use, but are hard to distribute the input colors into correct regions, due to the lac…

Cited by 0SourceScholar