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Gaowen Liu

47 accepted papers

2026

A Multi-Agent Perception-Action Alliance for Efficient Long Video Reasoning

CVPR 2026

This paper presents a multi-agent perception-action exploration alliance, dubbed A4VL, for efficient long-video reasoning. A4VL operates in a multi-round perception-action exploration loop with a selection of VLM agents. In each round, the team of agents performs video question-answer (VideoQA) via

Cited by 0SourcecodeScholar
2026

Attention-aware Inference Optimizations for Large Vision-Language Models with Memory-efficient Decoding

CVPR 2026

Large Vision-Language Models (VLMs) have achieved remarkable success in multi-modal reasoning, but their inference time efficiency remains a significant challenge due to the memory overhead during decoding, especially when the query and answer of VLMs consist of long sequences of visual and text tok

Cited by 0SourceScholar
2026

Dynamic Optimizations of LLM Ensembles with Two-Stage Reinforcement Learning Agents

ICML 2026poster

The advancement of LLMs and their accessibility have triggered renewed interest in multi-agent reinforcement learning as robust and adaptive frameworks for dynamically changing environments. This paper introduces RL-Focal, a two-stage RL agent framework that routes and ensembles LLMs. First, we deve…

Cited by 0SourceScholar
2026

Fast ECoT: Efficient Embodied Chain-Of-Thought Via Thoughts Reuse

ICRA 2026poster

Embodied Chain-of-Thought (ECoT) reasoning enhances vision-language-action (VLA) models by improving performance and interpretability through intermediate reasoning steps. However, its sequential autoregressive token generation introduces significant inference latency, limiting real-time deployment.…

2026

GIFSplat: Generative Prior-Guided Iterative Feed-Forward 3D Gaussian Splatting from Sparse Views

CVPR 2026

Feed-forward 3D reconstruction offers substantial runtime advantages over per-scene optimization, which remains slow at inference and often fragile under sparse views. However, existing feed-forward methods still have potential for further performance gains, especially for out-of-domain data, and st

Cited by 3SourcecodeScholar
2026

GuirlVG: Incentivize GUI Visual Grounding via Empirical Exploration on Reinforcement Learning

ICLR 2026poster

Graphical user interface visual grounding (GUI-VG)—a core capability for GUI agents—has primarily relied on supervised fine-tuning (SFT) of multimodal large language models (MLLMs), demanding extensive data curation and significant training costs. However, as MLLMs continue to advance and even cover…

Cited by 0SourceScholar
2026

Real-Time Robot Execution with Masked Action Chunking

ICLR 2026poster

Real-time execution is essential for cyber-physical systems such as robots. These systems operate in dynamic real-world environments where even small delays can undermine responsiveness and compromise performance. Asynchronous inference has recently emerged as a system-level paradigm for real-time r…

Cited by 0SourceScholar
2026

Safety Mirage: How Spurious Correlations Undermine VLM Safety Fine-Tuning and Can Be Mitigated by Machine Unlearning

ICLR 2026poster

Recent vision language models (VLMs) have made remarkable strides in generative modeling with multimodal inputs, particularly text and images. However, their susceptibility to generating harmful content when exposed to unsafe queries raises critical safety concerns. While current alignment strategie…

Cited by 0SourcecodeScholar
2026

Spectrally Distilled Representations Aligned with Instruction-Augmented LLMs for Satellite Imagery

CVPR 2026

Vision-language foundation models (VLFMs) promise zero-shot and retrieval understanding for Earth observation. While operational satellite systems often lack full multi-spectral coverage, making RGB-only inference highly desirable for scalable deployment, the adoption of VLFMs for satellite imagery

Cited by 0SourcecodeScholar
2025

A First-order Generative Bilevel Optimization Framework for Diffusion Models

ICML 2025poster

Diffusion models, which iteratively denoise data samples to synthesize high-quality outputs, have achieved empirical success across domains. However, optimizing these models for downstream tasks often involves nested bilevel structures, such as tuning hyperparameters for fine-tuning tasks or noise s…

Cited by 0SourcePDFScholar
2025

CaO2: Rectifying Inconsistencies in Diffusion-Based Dataset Distillation

ICCV 2025poster

The recent introduction of diffusion models in dataset distillation has shown promising potential in creating compact surrogate datasets for large, high-resolution target datasets, offering improved efficiency and performance over traditional bi-level/uni-level optimization methods. However, current…

2025

Compositional Caching for Training-free Open-vocabulary Attribute Detection

CVPR 2025highlight

Attribute detection is crucial for many computer vision tasks, as it enables systems to describe properties such as color, texture, and material. Current approaches often rely on labor-intensive annotation processes which are inherently limited: objects can be described at an arbitrary level of deta…

Cited by 0SourcePDFScholar
2025

Effective Training Data Synthesis for Improving MLLM Chart Understanding

ICCV 2025poster

Being able to effectively read scientific plots, or chart understanding, is a central part toward building effective agents for science. However, existing multimodal large language models (MLLMs), especially open-source ones, are still falling behind with a typical success rate of 30%-50% on challen…

2025

Efficient Multimodal Dataset Distillation via Generative Models

NeurIPS 2025poster

Dataset distillation aims to synthesize a small dataset from a large dataset, enabling the model trained on it to perform well on the original dataset. With the blooming of large language models and multimodal large language models, the importance of multimodal datasets, particularly image-text data…

Cited by 0SourcecodeScholar
2025

How Can Input Reformulation Improve Tool Usage Accuracy in a Complex Dynamic Environment? A Study on tau-bench

EMNLP 2025

Recent advances in reasoning and planning capabilities of large language models (LLMs) have enabled their potential as autonomous agents capable of tool use in dynamic environments. However, in multi-turn conversational environments like 𝜏 ‐bench, these agents often struggle with consistent reasonin

Cited by 0SourcePDFScholar
2025

Investigating the Shortcomings of LLMs in Step-by-Step Legal Reasoning

NAACL 2025findings

Reasoning abilities of LLMs have been a key focus in recent years. One challenging reasoning domain with interesting nuances is legal reasoning, which requires careful application of rules, and precedents while balancing deductive and analogical reasoning, and conflicts between rules. Although there…

2025

Invisible Watermarks, Visible Gains: Steering Machine Unlearning with Bi-Level Watermarking Design

ICCV 2025poster

With the increasing demand for the right to be forgotten, machine unlearning (MU) has emerged as a vital tool for enhancing trust and regulatory compliance by enabling the removal of sensitive data influences from machine learning (ML) models. However, most MU algorithms primarily rely on in-trainin…

Cited by 0SourcePDFScholar
2025

MGD$^3$ : Mode-Guided Dataset Distillation using Diffusion Models

ICML 2025oral

Dataset distillation has emerged as an effective strategy, significantly reducing training costs and facilitating more efficient model deployment. Recent advances have leveraged generative models to distill datasets by capturing the underlying data distribution. Unfortunately, existing methods requi…

Cited by 0SourcePDFScholar
2025

MonoTAKD: Teaching Assistant Knowledge Distillation for Monocular 3D Object Detection

CVPR 2025poster

Monocular 3D object detection (Mono3D) holds noteworthy promise for autonomous driving applications owing to the cost-effectiveness and rich visual context of monocular camera sensors. However, depth ambiguity poses a significant challenge, as it requires extracting precise 3D scene geometry from a…

2025

Orientation-anchored Hyper-Gaussian for 4D Reconstruction from Casual Videos

NeurIPS 2025poster

We present Orientation-anchored Gaussian Splatting (OriGS), a novel framework for high-quality 4D reconstruction from casually captured monocular videos. While recent advances extend 3D Gaussian Splatting to dynamic scenes via various motion anchors, such as graph nodes or spline control points, the…

Cited by 0SourceScholar
2025

SEUF: Is Unlearning One Expert Enough for Mixture-of-Experts LLMs?

ACL 2025long

Recent advancements in LLMs unlearning have shown remarkable success in removing unwanted data-model influences while preserving the model’s utility for legitimate knowledge. Despite these strides, sparse Mixture-of-Experts (MoE) LLMs–a key subset of the LLM family–have remained unexplored in the co…

Cited by 0SourcePDFScholar
2025

SafeKey: Amplifying Aha-Moment Insights for Safety Reasoning

EMNLP 2025

Large Reasoning Models (LRMs) introduce a new generation paradigm of explicitly reasoning before answering, leading to remarkable improvements in complex tasks. However, they pose great safety risks against harmful queries and adversarial attacks. While recent mainstream safety efforts on LRMs, supe

2025

Targeted Forgetting of Image Subgroups in CLIP Models

CVPR 2025poster

Foundation models (FMs) such as CLIP have demonstrated impressive zero-shot performance across various tasks by leveraging large-scale, unsupervised pre-training. However, they often inherit harmful or unwanted knowledge from noisy internet-sourced datasets, compromising their reliability in real-wo…

Cited by 0SourcePDFScholar
2025

Understanding Matrix Function Normalizations in Covariance Pooling through the Lens of Riemannian Geometry

ICLR 2025poster

Global Covariance Pooling (GCP) has been demonstrated to improve the performance of Deep Neural Networks (DNNs) by exploiting second-order statistics of high-level representations. GCP typically performs classification of the covariance matrices by applying matrix function normalization, such as mat…

2025

UniMuMo: Unified Text, Music, and Motion Generation

AAAI 2025technical

We introduce UniMuMo, a unified multimodal model capable of taking arbitrary text, music, and motion data as input conditions to generate outputs across all three modalities. To address the lack of time-synchronized data, we align unpaired music and motion data based on rhythmic patterns to leverage…

2024

A Method for Bilevel Optimization with Convex Lower-Level Problem

ICASSP 2024accepted

Gradient-based bilevel optimization methods have been applied to a wide range of applications including hyper-parameter optimization, meta-learning, and model pruning. However, it is known that the bilevel optimization problem is difficult to solve, and the finite-time guarantee has only been establ…

Cited by 0SourceScholar
2024

Advancing the Robustness of Large Language Models through Self-Denoised Smoothing

NAACL 2024short

Although large language models (LLMs) have achieved significant success, their vulnerability to adversarial perturbations, including recent jailbreak attacks, has raised considerable concerns. However, the increasing size of these models and their limited access make improving their robustness a cha…

2024

Answer is All You Need: Instruction-following Text Embedding via Answering the Question

ACL 2024long

This work aims to build a text embedder that can capture characteristics of texts specified by user instructions clarifying the similarity criterion. While previous methods improve general task awareness by injecting the instruction information into encoding, they fail to be sensitive to clearer cri…

2024

Efficient Multitask Dense Predictor via Binarization

CVPR 2024poster

Multi-task learning for dense prediction has emerged as a pivotal area in computer vision enabling simultaneous processing of diverse yet interrelated pixel-wise prediction tasks. However the substantial computational demands of state-of-the-art (SoTA) models often limit their widespread deployment.…

Cited by 2SourcePDFScholar
2024

Enhancing Post-training Quantization Calibration through Contrastive Learning

CVPR 2024poster

Post-training quantization (PTQ) converts a pre-trained full-precision (FP) model into a quantized model in a training-free manner. Determining suitable quantization parameters such as scaling factors and weight rounding is the primary strategy for mitigating the impact of quantization noise (calibr…

Cited by 13SourcePDFScholar
2024

From Trojan Horses to Castle Walls: Unveiling Bilateral Data Poisoning Effects in Diffusion Models

NeurIPS 2024poster

While state-of-the-art diffusion models (DMs) excel in image generation, concerns regarding their security persist. Earlier research highlighted DMs' vulnerability to data poisoning attacks, but these studies placed stricter requirements than conventional methods like 'BadNets' in image classificati…

2024

MULTIFLOW: Shifting Towards Task-Agnostic Vision-Language Pruning

CVPR 2024poster

While excellent in transfer learning Vision-Language models (VLMs) come with high computational costs due to their large number of parameters. To address this issue removing parameters via model pruning is a viable solution. However existing techniques for VLMs are task-specific and thus require pru…

2024

Open-world Multi-label Text Classification with Extremely Weak Supervision

EMNLP 2024main

We study open-world multi-label text classification under extremely weak supervision (XWS), where the user only provides a brief description for classification objectives without any labels or ground-truth label space. Similar single-label XWS settings have been explored recently, however, these met…

2024

Reversing the Forget-Retain Objectives: An Efficient LLM Unlearning Framework from Logit Difference

NeurIPS 2024poster

As Large Language Models (LLMs) demonstrate extensive capability in learning from documents, LLM unlearning becomes an increasingly important research area to address concerns of LLMs in terms of privacy, copyright, etc. A conventional LLM unlearning task typically involves two goals: (1) The target…

2024

Riemannian Multinomial Logistics Regression for SPD Neural Networks

CVPR 2024poster

Deep neural networks for learning Symmetric Positive Definite (SPD) matrices are gaining increasing attention in machine learning. Despite the significant progress most existing SPD networks use traditional Euclidean classifiers on an approximated space rather than intrinsic classifiers that accurat…

2024

SegVG: Transferring Object Bounding Box to Segmentation for Visual Grounding

ECCV 2024poster

"Different from Object Detection, Visual Grounding deals with detecting a bounding box for each text-image pair. This one box for each text-image data provides sparse supervision signals. Although previous works achieve impressive results, their passive utilization of annotation, i.e. the sole use o…

2024

Self-Adapting Large Visual-Language Models to Edge Devices across Visual Modalities

ECCV 2024poster

"Recent advancements in Vision-Language (VL) models have sparked interest in their deployment on edge devices, yet challenges in handling diverse visual modalities, manual annotation, and computational constraints remain. We introduce , a novel framework that bridges this gap by seamlessly integrati…

2024

UnlearnCanvas: Stylized Image Dataset for Enhanced Machine Unlearning Evaluation in Diffusion Models

NeurIPS 2024poster

The technological advancements in diffusion models (DMs) have demonstrated unprecedented capabilities in text-to-image generation and are widely used in diverse applications. However, they have also raised significant societal concerns, such as the generation of harmful content and copyright dispute…

2024

Variance Reduction Can Improve Trade-Off in Multi-Objective Learning

ICASSP 2024accepted

Many machine learning problems today have multiple objective functions, which are often tackled by the multi-objective learning (MOL) framework. Albeit many encouraging results are obtained by MOL algorithms, a recent theoretical study [1] revealed that these gradient-based MOL methods (e.g., MGDA,…

Cited by 0SourceScholar
2024

WaveFormer: Wavelet Transformer for Noise-Robust Video Inpainting

AAAI 2024technical

Video inpainting aims to fill in the missing regions of the video frames with plausible content. Benefiting from the outstanding long-range modeling capacity, the transformer-based models have achieved unprecedented performance regarding inpainting quality. Essentially, coherent contents from all th…

Cited by 18SourcePDFScholar
2023

Causal-DFQ: Causality Guided Data-Free Network Quantization

ICCV 2023poster

Model quantization, which aims to compress deep neural networks and accelerate inference speed, has greatly facilitated the development of cumbersome models on mobile and edge devices. There is a common assumption in quantization methods from prior works that training data is available. In practice,…

Cited by 6PDFcodeScholar
2023

Graph Mixture of Experts: Learning on Large-Scale Graphs with Explicit Diversity Modeling

NeurIPS 2023poster

Graph neural networks (GNNs) have found extensive applications in learning from graph data. However, real-world graphs often possess diverse structures and comprise nodes and edges of varying types. To bolster the generalization capacity of GNNs, it has become customary to augment training graph str…

2023

Model Sparsity Can Simplify Machine Unlearning

NeurIPS 2023spotlight

In response to recent data regulation requirements, machine unlearning (MU) has emerged as a critical process to remove the influence of specific examples from a given model. Although exact unlearning can be achieved through complete model retraining using the remaining dataset, the associated compu…

2023

Selectivity Drives Productivity: Efficient Dataset Pruning for Enhanced Transfer Learning

NeurIPS 2023poster

Massive data is often considered essential for deep learning applications, but it also incurs significant computational and infrastructural costs. Therefore, dataset pruning (DP) has emerged as an effective way to improve data efficiency by identifying and removing redundant training samples without…

2022

Learning Omnidirectional Flow in 360° Video via Siamese Representation

ECCV 2022poster

"Optical flow estimation in omnidirectional videos faces two significant issues: the lack of benchmark datasets and the challenge of adapting perspective video-based methods to accommodate the omnidirectional nature. This paper proposes the first perceptually natural-synthetic omnidirectional benchm…

2020

Exocentric to Egocentric Image Generation Via Parallel Generative Adversarial Network

ICASSP 2020accepted

Cross-view image generation has been recently proposed to generate images of one view from another dramatically different view. In this paper, we investigate exocentric (third-person) view to egocentric (first-person) view image generation. This is a challenging task since egocentric view sometimes…

Cited by 0SourceScholar