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Xinxing Xu

9 accepted papers

2026

EvoTest: Evolutionary Test-Time Learning for Self-Improving Agentic Systems

ICLR 2026poster

A fundamental limitation of current AI agents is their inability to learn complex skills on the fly at test time, often behaving like “clever but clueless interns” in novel environments. This severely limits their practical utility. To systematically measure and drive progress on this challenge, we…

Cited by 0SourcecodeScholar
2024

BenchX: A Unified Benchmark Framework for Medical Vision-Language Pretraining on Chest X-Rays

NeurIPS 2024poster

Medical Vision-Language Pretraining (MedVLP) shows promise in learning generalizable and transferable visual representations from paired and unpaired medical images and reports. MedVLP can provide useful features to downstream tasks and facilitate adapting task-specific models to new setups using fe…

2024

RLPeri: Accelerating Visual Perimetry Test with Reinforcement Learning and Convolutional Feature Extraction

AAAI 2024technical

Visual perimetry is an important eye examination that helps detect vision problems caused by ocular or neurological conditions. During the test, a patient's gaze is fixed at a specific location while light stimuli of varying intensities are presented in central and peripheral vision. Based on the pa…

Cited by 0SourcePDFScholar
2024

Sentence-level Prompts Benefit Composed Image Retrieval

ICLR 2024spotlight

Composed image retrieval (CIR) is the task of retrieving specific images by using a query that involves both a reference image and a relative caption. Most existing CIR models adopt the late-fusion strategy to combine visual and language features. Besides, several approaches have also been suggested…

2023

Learning Federated Visual Prompt in Null Space for MRI Reconstruction

CVPR 2023poster

Federated Magnetic Resonance Imaging (MRI) reconstruction enables multiple hospitals to collaborate distributedly without aggregating local data, thereby protecting patient privacy. However, the data heterogeneity caused by different MRI protocols, insufficient local training data, and limited commu…

2023

Towards Instance-adaptive Inference for Federated Learning

ICCV 2023poster

Federated learning (FL) is a distributed learning paradigm that enables multiple clients to learn a powerful global model by aggregating local training. However, the performance of the global model is often hampered by non-i.i.d. distribution among the clients, requiring extensive efforts to mitigat…

Cited by 22PDFcodeScholar
2022

CRAFT: Cross-Attentional Flow Transformer for Robust Optical Flow

CVPR 2022poster

Optical flow estimation aims to find the 2D motion field by identifying corresponding pixels between two images. Despite the tremendous progress of deep learning-based optical flow methods, it remains a challenge to accurately estimate large displacements with motion blur. This is mainly because the…

Cited by 134PDFcodeScholar
2021

Crowd Counting With Partial Annotations in an Image

ICCV 2021poster

To fully leverage the data captured from different scenes with different view angles while reducing the annotation cost, this paper studies a novel crowd counting setting, i.e. only using partial annotations in each image as training data. Inspired by the repetitive patterns in the annotated and una…

Cited by 57PDFcodeScholar
2021

Medical Image Segmentation using Squeeze-and-Expansion Transformers

IJCAI 2021poster

Medical image segmentation is important for computer-aided diagnosis. Good segmentation demands the model to see the big picture and fine details simultaneously, i.e., to learn image features that incorporate large context while keep high spatial resolutions. To approach this goal, the most widely u…