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Xiaotong Li

19 accepted papers

2026

Hierarchical Direction Perception via Atomic Dot-Product Operators for Rotation-Invariant Point Clouds Learning

AAAI 2026technical

Point cloud processing has become a cornerstone technology in many 3D vision tasks. However, arbitrary rotations introduce variations in point cloud orientations, posing a long-standing challenge for effective representation learning. The core of this issue is the disruption of the point cloud

Cited by 0SourcePDFScholar
2025

Adaptive Dual Uncertainty Optimization: Boosting Monocular 3D Object Detection under Test-Time Shifts

ICCV 2025poster

Accurate monocular 3D object detection (M3OD) is pivotal for safety-critical applications like autonomous driving, yet its reliability deteriorates significantly under real-world domain shifts caused by environmental or sensor variations. To address these shifts, Test-Time Adaptation (TTA) methods h…

2025

Beyond Entropy: Region Confidence Proxy for Wild Test-Time Adaptation

ICML 2025poster

Wild Test-Time Adaptation (WTTA) is proposed to adapt a source model to unseen domains under extreme data scarcity and multiple shifts. Previous approaches mainly focused on sample selection strategies, while overlooking the fundamental problem on underlying optimization. Initially, we critically an…

2025

Boosting LLM’s Molecular Structure Elucidation with Knowledge Enhanced Tree Search Reasoning

ACL 2025long

Molecular structure elucidation involves deducing a molecule’s structure from various types of spectral data, which is crucial in chemical experimental analysis. While large language models (LLMs) have shown remarkable proficiency in analyzing and reasoning through complex tasks, they still encounte…

Cited by 0SourcePDFScholar
2025

EVEv2: Improved Baselines for Encoder-Free Vision-Language Models

ICCV 2025poster

Existing encoder-free vision-language models (VLMs) are rapidly narrowing the performance gap with their encoder-based counterparts, highlighting the promising potential for unified multimodal systems with structural simplicity and efficient deployment. We systematically clarify the performance gap…

2025

Enhancing Safe and Controllable Protein Generation via Knowledge Preference Optimization

ACL 2025long

Protein language models have emerged as powerful tools for sequence generation, offering substantial advantages in functional optimization and *denovo* design. However, these models also present significant risks of generating harmful protein sequences, such as those that enhance viral transmissibil…

2024

DePLM: Denoising Protein Language Models for Property Optimization

NeurIPS 2024poster

Protein optimization is a fundamental biological task aimed at enhancing theperformance of proteins by modifying their sequences. Computational methodsprimarily rely on evolutionary information (EI) encoded by protein languagemodels (PLMs) to predict fitness landscape for optimization. However, thes…

Cited by 1SourcePDFScholar
2024

DenseFusion-1M: Merging Vision Experts for Comprehensive Multimodal Perception

NeurIPS 2024poster

Existing Multimodal Large Language Models (MLLMs) increasingly emphasize complex understanding of various visual elements, including multiple objects, text information, spatial relations. Their development for comprehensive visual perception hinges on the availability of high-quality image-text data…

2024

InstructProtein: Aligning Human and Protein Language via Knowledge Instruction

ACL 2024long

Large Language Models (LLMs) have revolutionized the field of natural language processing, but they fall short in comprehending biological sequences such as proteins. To address this challenge, we propose InstructProtein, an innovative LLM that possesses bidirectional generation capabilities in both…

2024

Knowledge-aware Reinforced Language Models for Protein Directed Evolution

ICML 2024poster

Directed evolution, a cornerstone of protein optimization, is to harness natural mutational processes to enhance protein functionality. Existing Machine Learning-assisted Directed Evolution (MLDE) methodologies typically rely on data-driven strategies and often overlook the profound domain knowledge…

Cited by 2SourcePDFScholar
2024

LEAD: Exploring Logit Space Evolution for Model Selection

CVPR 2024poster

The remarkable success of "pretrain-then-finetune" paradigm has led to a proliferation of available pre-trained models for vision tasks. This surge presents a significant challenge in efficiently choosing the most suitable pre-trained models for downstream tasks. The critical aspect of this challeng…

Cited by 0SourcePDFScholar
2024

Unveiling Encoder-Free Vision-Language Models

NeurIPS 2024spotlight

Existing vision-language models (VLMs) mostly rely on vision encoders to extract visual features followed by large language models (LLMs) for visual-language tasks. However, the vision encoders set a strong inductive bias in abstracting visual representation, e.g., resolution, aspect ratio, and sema…

2023

Cycle-consistent Masked AutoEncoder for Unsupervised Domain Generalization

ICLR 2023poster

Self-supervised learning methods undergo undesirable performance drops when there exists a significant domain gap between training and testing scenarios. Therefore, unsupervised domain generalization (UDG) is proposed to tackle the problem, which requires the model to be trained on several different…

Cited by 7SourcePDFScholar
2023

Exploring Model Transferability through the Lens of Potential Energy

ICCV 2023poster

Transfer learning has become crucial in computer vision tasks due to the vast availability of pre-trained deep learning models. However, selecting the optimal pre-trained model from a diverse pool for a specific downstream task remains a challenge. Existing methods for measuring the transferability…

Cited by 9PDFcodeScholar
2023

Masked Image Modeling with Denoising Contrast

ICLR 2023poster

Since the development of self-supervised visual representation learning from contrastive learning to masked image modeling (MIM), there is no significant difference in essence, that is, how to design proper pretext tasks for vision dictionary look-up. MIM recently dominates this line of research wit…

2022

Mc-BEiT: Multi-Choice Discretization for Image BERT Pre-training

ECCV 2022poster

"Image BERT pre-training with masked image modeling (MIM) becomes a popular practice to cope with self-supervised representation learning. A seminal work, BEiT, casts MIM as a classification task with a visual vocabulary, tokenizing the continuous visual signals into discrete vision tokens using a p…

2022

TCCNet: Temporally Consistent Context-Free Network for Semi-supervised Video Polyp Segmentation

IJCAI 2022poster

Automatic video polyp segmentation (VPS) is highly valued for the early diagnosis of colorectal cancer. However, existing methods are limited in three respects: 1) most of them work on static images, while ignoring the temporal information in consecutive video frames; 2) all of them are fully superv…

2022

Uncertainty Modeling for Out-of-Distribution Generalization

ICLR 2022poster

Though remarkable progress has been achieved in various vision tasks, deep neural networks still suffer obvious performance degradation when tested in out-of-distribution scenarios. We argue that the feature statistics (mean and standard deviation), which carry the domain characteristics of the trai…

2021

Generalizable Person Re-Identification With Relevance-Aware Mixture of Experts

CVPR 2021poster

Domain generalizable (DG) person re-identification (ReID) is a challenging problem because we cannot access any unseen target domain data during training. Almost all the existing DG ReID methods follow the same pipeline where they use a hybrid dataset from multiple source domains for training, and t…

Cited by 160PDFScholar