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Xiaobo Xia

45 accepted papers

2026

APEX: A Decoupled Memory-based Explorer for Asynchronous Aerial Object Goal Navigation

CVPR 2026

The Aerial Object Goal Navigation, a challenging frontier in Embodied AI, requires an Unmanned Aerial Vehicle (UAV) agent to autonomously explore, reason, and identify a specific target using only visual perception and language description. However, existing methods struggle with the memorization of

Cited by 0SourcecodeScholar
2026

AUHead: Realistic Emotional Talking Head Generation via Action Units Control

ICLR 2026poster

Realistic talking-head video generation is critical for virtual avatars, film production, and interactive systems. Current methods struggle with nuanced emotional expressions due to the lack of fine-grained emotion control. To address this issue, we introduce a novel two-stage method (AUHead) to dis…

Cited by 0SourcecodeScholar
2026

AnchorFlow: Training-Free 3D Editing via Latent Anchor-Aligned Flows

CVPR 2026

Training-free 3D editing aims to modify 3D shapes based on human instructions without model finetuning. It plays a crucial role in 3D content creation. However, existing approaches often struggle to produce strong or geometrically stable edits, largely due to inconsistent latent anchors introduced b

Cited by 0SourcecodeScholar
2026

Calibrated Multimodal Representation Learning with Missing Modalities

ICML 2026poster

Multimodal representation learning harmonizes distinct modalities by aligning them into a unified latent space. Recent research generalizes traditional cross-modal alignment to produce enhanced multimodal synergy but requires all modalities to be present for a common instance, making it challenging …

Cited by 0SourceScholar
2026

NExT-OMNI: Towards Any-to-Any Omnimodal Foundation Models with Discrete Flow Matching

ICLR 2026poster

Next-generation multimodal foundation models capable of any-to-any cross-modal generation and multi-turn interaction will serve as core components of artificial general intelligence systems, playing a pivotal role in human-machine interaction. However, most existing multimodal models remain constrai…

Cited by 0SourceScholar
2026

Positive–Unlabeled Reinforcement Learning Distillation for On-Premise Small Models

ICML 2026poster

Due to constraints on privacy, cost, and latency, on-premise deployment of small models is increasingly common. However, most practical pipelines stop at supervised fine-tuning (SFT) and fail to reach the reinforcement learning (RL) alignment stage. The main reason is that RL alignment typically req…

Cited by 0SourceScholar
2026

Potent but Stealthy: Rethink Profile Pollution Against Sequential Recommendation via Bi-Level Constrained Reinforcement Paradigm

AAAI 2026technical

Sequential Recommenders, which exploit dynamic user intents through interaction sequences, are vulnerable to adversarial attacks. While existing attacks primarily rely on data poisoning, they require large-scale user access or fake profiles thus lacking practicality. In this paper, we focus on the P

Cited by 0SourcePDFScholar
2026

Semi-Supervised Conformal Prediction With Unlabeled Nonconformity Score

CVPR 2026

Conformal prediction (CP) is a powerful framework for uncertainty quantification, generating prediction sets with coverage guarantees. Split conformal prediction relies on labeled data in the calibration procedure. However, the labeled data is often limited in real-world scenarios, leading to unstab

Cited by 0SourcecodeScholar
2026

VLA-ATTC: Adaptive Test-Time Compute for VLA Models with Relative Action Critic Model

ICML 2026poster

Vision-Language-Action (VLA) models have demonstrated remarkable capabilities and generalization in embodied manipulation. However, their decision-making relies on a fast, instinctive process that lacks deliberation. This strategy often leads to suboptimal or catastrophic actions when facing complex…

Cited by 0SourceScholar
2025

DEEM: Diffusion models serve as the eyes of large language models for image perception

ICLR 2025spotlight

The development of large language models (LLMs) has significantly advanced the emergence of large multimodal models (LMMs). While LMMs have achieved tremendous success by promoting the synergy between multimodal comprehension and creation, they often face challenges when confronted with out-of-distr…

2025

DreamDPO: Aligning Text-to-3D Generation with Human Preferences via Direct Preference Optimization

ICML 2025poster

Text-to-3D generation automates 3D content creation from textual descriptions, which offers transformative potential across various fields. However, existing methods often struggle to align generated content with human preferences, limiting their applicability and flexibility. To address these limit…

Cited by 7SourcePDFScholar
2025

Hierarchical Context Pruning: Optimizing Real-World Code Completion with Repository-Level Pretrained Code LLMs

AAAI 2025technical

Some of the latest released Code Large Language Models (Code LLMs) have been trained on repository-level code data, enabling them to perceive repository structures and utilize cross-file code information. This capability allows us to directly concatenate the content of repository code files in promp…

2025

L-MTP: Leap Multi-Token Prediction Beyond Adjacent Context for Large Language Models

NeurIPS 2025poster

Large language models (LLMs) have achieved notable progress. Despite their success, next-token prediction (NTP), the dominant method for LLM training and inference, is constrained in both contextual coverage and inference efficiency due to its inherently sequential process. To overcome these challen…

Cited by 0SourcecodeScholar
2025

LaVin-DiT: Large Vision Diffusion Transformer

CVPR 2025poster

This paper presents the Large Vision Diffusion Transformer (LaVin-DiT), a scalable and unified foundation model designed to tackle over 20 computer vision tasks in a generative framework. Unlike existing large vision models directly adapted from natural language processing architectures, which rely…

2025

MMEvol: Empowering Multimodal Large Language Models with Evol-Instruct

ACL 2025finding

The development of Multimodal Large Language Models (MLLMs) has seen significant progress, driven by increasing demands across various fields (e.g., multimodal agents, embodied intelligence). While model-driven approaches aim to enhance MLLM capabilities through diverse architectures, their performa…

Cited by 0SourcePDFScholar
2025

OpenOmni: Advancing Open-Source Omnimodal Large Language Models with Progressive Multimodal Alignment and Real-time Emotional Speech Synthesis

NeurIPS 2025poster

Recent advancements in omnimodal learning have significantly improved understanding and generation across images, text, and speech, yet these developments remain predominantly confined to proprietary models. The lack of high-quality omnimodal datasets and the challenges of real-time emotional speech…

Cited by 0SourcecodeScholar
2025

UtilGen: Utility-Centric Generative Data Augmentation with Dual-Level Task Adaptation

NeurIPS 2025poster

Data augmentation using generative models has emerged as a powerful paradigm for enhancing performance in computer vision tasks. However, most existing augmentation approaches primarily focus on optimizing intrinsic data attributes -- such as fidelity and diversity -- to generate visually high-quali…

Cited by 0SourceScholar
2025

VCM: Vision Concept Modeling with Adaptive Vision Token Compression via Instruction Fine-Tuning

NeurIPS 2025poster

Large vision-language models (LVLMs) have emerged as foundational tools for real-world AI applications. Despite their remarkable capabilities, current LVLMs process entire images at the token level, leading to significant inefficiencies compared to human cognition, which selectively focuses on high-…

Cited by 0SourcecodeScholar
2025

Where, What, Why: Towards Explainable Driver Attention Prediction

ICCV 2025poster

Modeling task-driven attention in driving is a fundamental challenge for both autonomous vehicles and cognitive science. Existing methods primarily predict where drivers look by generating spatial heatmaps, but fail to capture the cognitive motivations behind attention allocation in specific context…

2024

Few-Shot Adversarial Prompt Learning on Vision-Language Models

NeurIPS 2024poster

The vulnerability of deep neural networks to imperceptible adversarial perturbations has attracted widespread attention. Inspired by the success of vision-language foundation models, previous efforts achieved zero-shot adversarial robustness by aligning adversarial visual features with text supervis…

2024

IDEAL: Influence-Driven Selective Annotations Empower In-Context Learners in Large Language Models

ICLR 2024poster

In-context learning is a promising paradigm that utilizes in-context examples as prompts for the predictions of large language models. These prompts are crucial for achieving strong performance. However, since the prompts need to be sampled from a large volume of annotated examples, finding the righ…

Cited by 28SourcePDFScholar
2024

Mitigating Label Noise on Graphs via Topological Sample Selection

ICML 2024poster

Despite the success of the carefully-annotated benchmarks, the effectiveness of existing graph neural networks (GNNs) can be considerably impaired in practice when the real-world graph data is noisily labeled. Previous explorations in sample selection have been demonstrated as an effective way for r…

Cited by 8SourcePDFScholar
2024

One-Shot Learning as Instruction Data Prospector for Large Language Models

ACL 2024long

Contemporary practices in instruction tuning often hinge on enlarging data scaling without a clear strategy for ensuring data quality, inadvertently introducing noise that may compromise model performance. To address this challenge, we introduce Nuggets, a novel and efficient methodology that levera…

2024

Refined Coreset Selection: Towards Minimal Coreset Size under Model Performance Constraints

ICML 2024spotlight

Coreset selection is powerful in reducing computational costs and accelerating data processing for deep learning algorithms. It strives to identify a small subset from large-scale data, so that training only on the subset practically performs on par with full data. Practitioners regularly desire to…

2024

Towards Realistic Model Selection for Semi-supervised Learning

ICML 2024poster

Semi-supervised Learning (SSL) has shown remarkable success in applications with limited supervision. However, due to the scarcity of labels in the training process, SSL algorithms are known to be impaired by the lack of proper model selection, as splitting a validation set will further reduce the l…

Cited by 1SourcePDFScholar
2023

A Holistic View of Label Noise Transition Matrix in Deep Learning and Beyond

ICLR 2023top-25%

In this paper, we explore learning statistically consistent classifiers under label noise by estimating the noise transition matrix T. We first provide a holistic view of existing T-estimation methods including those with or without anchor point assumptions. We unified them into the Minimum Geometr…

Cited by 14SourcePDFScholar
2023

Combating Noisy Labels with Sample Selection by Mining High-Discrepancy Examples

ICCV 2023poster

The sample selection approach is popular in learning with noisy labels. The state-of-the-art methods train two deep networks simultaneously for sample selection, which aims to employ their different learning abilities. To prevent two networks from converging to a consensus, their divergence should b…

Cited by 53PDFcodeScholar
2023

Harnessing Out-Of-Distribution Examples via Augmenting Content and Style

ICLR 2023poster

Machine learning models are vulnerable to Out-Of-Distribution (OOD) examples, such a problem has drawn much attention. However, current methods lack a full understanding of different types of OOD data: there are benign OOD data that can be properly adapted to enhance the learning performance, while…

Cited by 58SourcePDFScholar
2023

Holistic Label Correction for Noisy Multi-Label Classification

ICCV 2023poster

Multi-label classification aims to learn classification models from instances associated with multiple labels. It is pivotal to learn and utilize the label dependence among multiple labels in multi-label classification. As a result of today's big and complex data, noisy labels are inevitable, making…

Cited by 14PDFScholar
2023

HumanMAC: Masked Motion Completion for Human Motion Prediction

ICCV 2023poster

Human motion prediction is a classical problem in computer vision and computer graphics, which has a wide range of practical applications. Previous effects achieve great empirical performance based on an encoding-decoding style. The methods of this style work by first encoding previous motions to la…

Cited by 82PDFcodeScholar
2023

Moderate Coreset: A Universal Method of Data Selection for Real-world Data-efficient Deep Learning

ICLR 2023poster

Deep learning methods nowadays rely on massive data, resulting in substantial costs of data storage and model training. Data selection is a useful tool to alleviate such costs, where a coreset of massive data is extracted to practically perform on par with full data. Based on carefully-designed scor…

2023

Out-of-distribution Detection Learning with Unreliable Out-of-distribution Sources

NeurIPS 2023poster

Out-of-distribution (OOD) detection discerns OOD data where the predictor cannot make valid predictions as in-distribution (ID) data, thereby increasing the reliability of open-world classification. However, it is typically hard to collect real out-of-distribution (OOD) data for training a predictor…

2023

Robust Generalization Against Photon-Limited Corruptions via Worst-Case Sharpness Minimization

CVPR 2023poster

Robust generalization aims to tackle the most challenging data distributions which are rare in the training set and contain severe noises, i.e., photon-limited corruptions. Common solutions such as distributionally robust optimization (DRO) focus on the worst-case empirical risk to ensure low traini…

2022

Estimating Noise Transition Matrix with Label Correlations for Noisy Multi-Label Learning

NeurIPS 2022accept

In label-noise learning, the noise transition matrix, bridging the class posterior for noisy and clean data, has been widely exploited to learn statistically consistent classifiers. The effectiveness of these algorithms relies heavily on estimating the transition matrix. Recently, the problem of lab…

2022

Out-of-Distribution Detection with An Adaptive Likelihood Ratio on Informative Hierarchical VAE

NeurIPS 2022accept

Unsupervised out-of-distribution (OOD) detection is essential for the reliability of machine learning. In the literature, existing work has shown that higher-level semantics captured by hierarchical VAEs can be used to detect OOD instances. However, we empirically show that, the inherent issue of hi…

Cited by 24SourcePDFScholar
2022

Pluralistic Image Completion with Gaussian Mixture Models

NeurIPS 2022accept

Pluralistic image completion focuses on generating both visually realistic and diverse results for image completion. Prior methods enjoy the empirical successes of this task. However, their used constraints for pluralistic image completion are argued to be not well interpretable and unsatisfactory f…

2022

Sample Selection with Uncertainty of Losses for Learning with Noisy Labels

ICLR 2022poster

In learning with noisy labels, the sample selection approach is very popular, which regards small-loss data as correctly labeled data during training. However, losses are generated on-the-fly based on the model being trained with noisy labels, and thus large-loss data are likely but not certain to be…

Cited by 159SourcePDFScholar
2021

Class2Simi: A Noise Reduction Perspective on Learning with Noisy Labels

ICML 2021spotlight

Learning with noisy labels has attracted a lot of attention in recent years, where the mainstream approaches are in \emph{pointwise} manners. Meanwhile, \emph{pairwise} manners have shown great potential in supervised metric learning and unsupervised contrastive learning. Thus, a natural question is…

Cited by 82SourcePDFScholar
2021

Robust early-learning: Hindering the memorization of noisy labels

ICLR 2021poster

The \textit{memorization effects} of deep networks show that they will first memorize training data with clean labels and then those with noisy labels. The \textit{early stopping} method therefore can be exploited for learning with noisy labels. However, the side effect brought by noisy labels will…

Cited by 354SourcePDFScholar
2020

Part-dependent Label Noise: Towards Instance-dependent Label Noise

NeurIPS 2020spotlight

Learning with the \textit{instance-dependent} label noise is challenging, because it is hard to model such real-world noise. Note that there are psychological and physiological evidences showing that we humans perceive instances by decomposing them into parts. Annotators are therefore more likely to…

2019

Are Anchor Points Really Indispensable in Label-Noise Learning?

NeurIPS 2019poster

In label-noise learning, the \textit{noise transition matrix}, denoting the probabilities that clean labels flip into noisy labels, plays a central role in building \textit{statistically consistent classifiers}. Existing theories have shown that the transition matrix can be learned by exploiting \te…