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Data harmonization is the process by which an equivalence is developed between two variables measuring a common trait. Our problem is motivated by dementia research in which multiple tests are used in practice to measure the same underlying…

Methodology · Statistics 2021-10-13 Steven Wilkins-Reeves , Yen-Chi Chen , Kwun Chuen Gary Chan

Pooling publicly-available MRI data from multiple sites allows to assemble extensive groups of subjects, increase statistical power, and promote data reuse with machine learning techniques. The harmonization of multicenter data is necessary…

Machine Learning · Computer Science 2024-02-02 Chiara Marzi , Marco Giannelli , Andrea Barucci , Carlo Tessa , Mario Mascalchi , Stefano Diciotti

For machine learning-based prognosis and diagnosis of rare diseases, such as pediatric brain tumors, it is necessary to gather medical imaging data from multiple clinical sites that may use different devices and protocols. Deep…

Magnetic resonance imaging (MRI) has greatly advanced neuroscience research and clinical diagnostics. However, imaging data collected across different scanners, acquisition protocols, or imaging sites often exhibit substantial…

Image and Video Processing · Electrical Eng. & Systems 2026-04-02 Qinqin Yang , Firoozeh Shomal-Zadeh , Ali Gholipour

The ability to combine data across scanners and studies is vital for neuroimaging, to increase both statistical power and the representation of biological variability. However, combining datasets across sites leads to two challenges: first,…

Machine Learning · Computer Science 2022-06-01 Nicola K Dinsdale , Mark Jenkinson , Ana IL Namburete

Artificial intelligence (AI) has introduced numerous opportunities for human assistance and task automation in medicine. However, it suffers from poor generalization in the presence of shifts in the data distribution. In the context of…

In cases of prevalent diseases and disorders, such as Prenatal Alcohol Exposure (PAE), multi-site data collection allows for increased study samples. However, multi-site studies introduce additional variability through heterogeneous…

The desire to train complex machine learning algorithms and to increase the statistical power in association studies drives neuroimaging research to use ever-larger datasets. The most obvious way to increase sample size is by pooling scans…

Computer Vision and Pattern Recognition · Computer Science 2020-10-29 Christian Wachinger , Anna Rieckmann , Sebastian Pölsterl

Accurately segmenting brain lesions in MRI scans is critical for providing patients with prognoses and neurological monitoring. However, the performance of CNN-based segmentation methods is constrained by the limited training set size.…

Image and Video Processing · Electrical Eng. & Systems 2023-07-06 Jiayu Huo , Yang Liu , Xi Ouyang , Alejandro Granados , Sebastien Ourselin , Rachel Sparks

Image harmonization has been significantly advanced with large-scale harmonization dataset. However, the current way to build dataset is still labor-intensive, which adversely affects the extendability of dataset. To address this problem,…

Computer Vision and Pattern Recognition · Computer Science 2022-10-13 Junyan Cao , Wenyan Cong , Li Niu , Jianfu Zhang , Liqing Zhang

Diffusion imaging is an important method in the field of neuroscience, as it is sensitive to changes within the tissue microstructure of the human brain. However, a major challenge when using MRI to derive quantitative measures is that the…

Computer Vision and Pattern Recognition · Computer Science 2018-08-07 Simon Koppers , Luke Bloy , Jeffrey I. Berman , Chantal M. W. Tax , J. Christopher Edgar , Dorit Merhof

Image harmonization is an important preprocessing strategy to address domain shifts arising from data acquired using different machines and scanning protocols in medical imaging. However, benchmarking the effectiveness of harmonization…

Image and Video Processing · Electrical Eng. & Systems 2024-08-28 Abhijeet Parida , Zhifan Jiang , Roger J. Packer , Robert A. Avery , Syed M. Anwar , Marius G. Linguraru

This paper introduces HarmonySet, a comprehensive dataset designed to advance video-music understanding. HarmonySet consists of 48,328 diverse video-music pairs, annotated with detailed information on rhythmic synchronization, emotional…

Computer Vision and Pattern Recognition · Computer Science 2025-03-05 Zitang Zhou , Ke Mei , Yu Lu , Tianyi Wang , Fengyun Rao

Image harmonization is an important step in photo editing to achieve visual consistency in composite images by adjusting the appearances of foreground to make it compatible with background. Previous approaches to harmonize composites are…

Computer Vision and Pattern Recognition · Computer Science 2020-06-02 Konstantin Sofiiuk , Polina Popenova , Anton Konushin

Recent advances in biological technologies, such as multi-way chromosome conformation capture (3C), require development of methods for analysis of multi-way interactions. Hypergraphs are mathematically tractable objects that can be utilized…

Quantitative Methods · Quantitative Biology 2023-07-19 Joshua Pickard , Can Chen , Rahmy Salman , Cooper Stansbury , Sion Kim , Amit Surana , Anthony Bloch , Indika Rajapakse

Machine learning (ML) models benefit from large datasets. Collecting data in biomedical domains is costly and challenging, hence, combining datasets has become a common practice. However, datasets obtained under different conditions could…

Image harmonization, which involves adjusting the foreground of a composite image to attain a unified visual consistency with the background, can be conceptualized as an image-to-image translation task. Diffusion models have recently…

Computer Vision and Pattern Recognition · Computer Science 2024-04-10 Pengfei Zhou , Fangxiang Feng , Xiaojie Wang

The use of multi-centric analyses is crucial for obtaining sufficient sample sizes and representative clinical populations in experimental studies. In this setting, data harmonization techniques are typically employed to address systematic…

Quantitative Methods · Quantitative Biology 2026-01-22 Santiago Silva , Ghiles Reguig , Neil P Oxtoby , Andre Altmann , Marco Lorenzi

Connectivity matrices derived from diffusion MRI (dMRI) provide an interpretable and generalizable way of understanding the human brain connectome. However, dMRI suffers from inter-site and between-scanner variation, which impedes analysis…

Hierarchical Multi-Agent Systems provide convenient and relevant ways to analyze, model, and simulate complex systems composed of a large number of entities that interact at different levels of abstraction. In this paper, we introduce…

Machine Learning · Computer Science 2022-04-27 Ahmad Esmaeili , John C. Gallagher , John A. Springer , Eric T. Matson
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