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Data augmentation is a valuable tool for the design of deep learning systems to overcome data limitations and stabilize the training process. Especially in the medical domain, where the collection of large-scale data sets is challenging and…

机器学习 · 计算机科学 2025-02-11 Mane Margaryan , Matthias Seibold , Indu Joshi , Mazda Farshad , Philipp Fürnstahl , Nassir Navab

Recently, nonlinear ICA has surfaced as a popular alternative to the many heuristic models used in deep representation learning and disentanglement. An advantage of nonlinear ICA is that a sophisticated identifiability theory has been…

机器学习 · 统计学 2023-11-29 Hermanni Hälvä , Jonathan So , Richard E. Turner , Aapo Hyvärinen

We generalize the low-rank decomposition problem, such as principal and independent component analysis (PCA, ICA) for continuous-time vector-valued signals and provide a model-agnostic implicit neural signal representation framework to…

机器学习 · 计算机科学 2025-07-15 Shayan K. Azmoodeh , Krishna Subramani , Paris Smaragdis

Advances in neuroimaging techniques have provided us novel insights into understanding how the human mind works. Functional magnetic resonance imaging (fMRI) is the most popular and widely used neuroimaging technique, and there is growing…

神经元与认知 · 定量生物学 2022-06-15 Jihyun Hur , Jaeyeong Yang , Hoyoung Doh , Woo-Young Ahn

Independent Component Analysis (ICA) aims to find a coordinate system in which the components of the data are independent. In this paper we construct a new nonlinear ICA model, called WICA, which obtains better and more stable results than…

机器学习 · 计算机科学 2020-12-11 Andrzej Bedychaj , Przemysław Spurek , Aleksandra Nowak , Jacek Tabor

Aggregating multi-subject functional magnetic resonance imaging (fMRI) data is indispensable for generating valid and general inferences from patterns distributed across human brains. The disparities in anatomical structures and functional…

机器学习 · 计算机科学 2019-11-20 Weida Li , Mingxia Liu , Fang Chen , Daoqiang Zhang

Brain networks in fMRI are typically identified using spatial independent component analysis (ICA), yet mathematical constraints such as sparse coding and positivity both provide alternate biologically-plausible frameworks for generating…

神经元与认知 · 定量生物学 2016-07-05 Jianwen Xie , Pamela K. Douglas , Ying Nian Wu , Arthur L. Brody , Ariana E. Anderson

Due to the limited availability of medical data, deep learning approaches for medical image analysis tend to generalise poorly to unseen data. Augmenting data during training with random transformations has been shown to help and became a…

图像与视频处理 · 电气工程与系统科学 2022-10-04 Tian Xia , Pedro Sanchez , Chen Qin , Sotirios A. Tsaftaris

The human brain is a complex system requiring both macroscopic and microscopic components for comprehensive understanding. However, mapping nonlinear relationships between these scales remains challenging due to technical limitations and…

图像与视频处理 · 电气工程与系统科学 2025-10-28 Sooyoung Kim , Joonwoo Kwon , Junbeom Kwon , Jungyoun Janice Min , Sangyoon Bae , Yuewei Lin , Shinjae Yoo , Jiook Cha

Recent advances in nonlinear Independent Component Analysis (ICA) provide a principled framework for unsupervised feature learning and disentanglement. The central idea in such works is that the latent components are assumed to be…

机器学习 · 统计学 2020-06-23 Hermanni Hälvä , Aapo Hyvärinen

Chimeric antigen receptor (CAR)-T and NK cell immunotherapies have transformed cancer treatment, and recent studies suggest that the quality of the CAR-T/NK cell immunological synapse (IS) may serve as a functional biomarker for predicting…

计算机视觉与模式识别 · 计算机科学 2026-02-04 Xiang Zhang , Boxuan Zhang , Alireza Naghizadeh , Mohab Mohamed , Dongfang Liu , Ruixiang Tang , Dimitris Metaxas , Dongfang Liu

Most EEG-based Brain-Computer Interfaces (BCIs) require a considerable amount of training data to calibrate the classification model, owing to the high variability in the EEG data, which manifests itself between participants, but also…

机器学习 · 计算机科学 2022-03-29 Oleksandr Zlatov , Benjamin Blankertz

Independent Component Analysis (ICA) is a statistical method often used to decompose a complex dataset in its independent sub-parts. It is a powerful technique to solve a typical Blind Source Separation problem. A fast calculation of the…

天体物理学 · 物理学 2007-05-23 C. Cecchi , F. Marcucci , G. Tosti

Modern Imaging Atmospheric Cherenkov Telescopes (IACTs) generate a huge amount of data that must be classified automatically, ideally in real time. Currently, machine learning-based solutions are increasingly being used to solve…

天体物理仪器与方法 · 物理学 2025-04-03 Yu. Yu. Dubenskaya , A. P. Kryukov , E. O. Gres , S. P. Polyakov , E. B. Postnikov , P. A. Volchugov , A. A. Vlaskina , D. P. Zhurov

Analyzing and predicting brain aging is essential for early prognosis and accurate diagnosis of cognitive diseases. The technique of neuroimaging, such as Magnetic Resonance Imaging (MRI), provides a noninvasive means of observing the aging…

图像与视频处理 · 电气工程与系统科学 2022-12-06 Jingru Fu , Antonios Tzortzakakis , José Barroso , Eric Westman , Daniel Ferreira , Rodrigo Moreno

Independent component analysis is an unsupervised learning approach for computing the independent components (ICs) from the multivariate signals or data matrix. The ICs are evaluated based on the multiplication of the weight matrix with the…

The Independent Component Analysis (ICA) algorithm is implemented as a neural network for separating signals of different origin in astrophysical sky maps. Due to its self-organizing capability, it works without prior assumptions on the…

This paper focuses on the analysis of sequential image data, particularly brain imaging data such as MRI, fMRI, CT, with the motivation of understanding the brain aging process and neurodegenerative diseases. To achieve this goal, we…

机器学习 · 统计学 2024-07-22 Zhenghao Li , Sanyou Wu , Long Feng

Generative Adversarial Networks (GANs) have many potential medical imaging applications. Due to the limited memory of Graphical Processing Units (GPUs), most current 3D GAN models are trained on low-resolution medical images, these models…

计算机视觉与模式识别 · 计算机科学 2025-03-17 Mahshid Shiri , Alessandro Bruno , Daniele Loiacono

Generative adversarial networks (GANs) are a class of unsupervised machine learning algorithms that can produce realistic images from randomly-sampled vectors in a multi-dimensional space. Until recently, it was not possible to generate…

计算机视觉与模式识别 · 计算机科学 2018-05-10 Andrew Beers , James Brown , Ken Chang , J. Peter Campbell , Susan Ostmo , Michael F. Chiang , Jayashree Kalpathy-Cramer