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Synaptic connections are known to change dynamically. High-frequency presynaptic inputs induce decrease of synaptic weights. This process is known as short-term synaptic depression. The synaptic depression controls a gain for presynaptic…

Disordered Systems and Neural Networks · Physics 2007-05-23 Narihisa Matsumoto , Daisuke Ide , Masataka Watanabe , Masato Okada

In the literature on deep neural networks, there is considerable interest in developing activation functions that can enhance neural network performance. In recent years, there has been renewed scientific interest in proposing activation…

Machine Learning · Computer Science 2023-04-20 Mohamed Fakhfakh , Lotfi Chaari

Performance metrics for medical image segmentation models are used to measure the agreement between the reference annotation and the predicted segmentation. Usually, overlap metrics, such as the Dice, are used as a metric to evaluate the…

Image and Video Processing · Electrical Eng. & Systems 2024-03-26 Sophie Ostmeier , Brian Axelrod , Jeroen Bertels , Fabian Isensee , Maarten G. Lansberg , Soren Christensen , Gregory W. Albers , Li-Jia Li , Jeremy J. Heit

Traditional Convolutional Neural Networks (CNNs) typically use the same activation function (usually ReLU) for all neurons with non-linear mapping operations. For example, the deep convolutional architecture Inception-v4 uses ReLU. To…

Computer Vision and Pattern Recognition · Computer Science 2018-05-31 Luna M. Zhang

We study the problem of learning an unknown function using random feature models. Our main contribution is an exact asymptotic analysis of such learning problems with Gaussian data. Under mild regularity conditions for the feature matrix,…

Information Theory · Computer Science 2020-08-28 Oussama Dhifallah , Yue M. Lu

Methods for automatically flag poor performing-predictions are essential for safely implementing machine learning workflows into clinical practice and for identifying difficult cases during model training. We present a readily adoptable…

Image and Video Processing · Electrical Eng. & Systems 2023-05-17 Harrison C. Gottlich , Panagiotis Korfiatis , Adriana V. Gregory , Timothy L. Kline

Different activation functions work best for different deep learning models. To exploit this, we leverage recent advancements in gradient-based search techniques for neural architectures to efficiently identify high-performing activation…

Machine Learning · Computer Science 2024-08-14 Lukas Strack , Mahmoud Safari , Frank Hutter

Spintronic devices have been widely studied for the hardware realization of artificial neurons. The stochastic switching of magnetic tunnel junction driven by the spin torque is commonly used to produce the sigmoid activation function.…

Emerging Technologies · Computer Science 2022-11-28 Yue Xin , Kang Zhou , Xuanyao Fong , Yumeng Yang , Shenghua Gao , Zhifeng Zhu

Shortcut learning is a phenomenon where machine learning models prioritize learning simple, potentially misleading cues from data that do not generalize well beyond the training set. While existing research primarily investigates this in…

Image and Video Processing · Electrical Eng. & Systems 2024-06-28 Manxi Lin , Nina Weng , Kamil Mikolaj , Zahra Bashir , Morten Bo Søndergaard Svendsen , Martin Tolsgaard , Anders Nymark Christensen , Aasa Feragen

Deep learning has shown promising contributions in medical image segmentation with powerful learning and feature representation abilities. However, it has limitations for reasoning with and combining imperfect (imprecise, uncertain, and…

Computer Vision and Pattern Recognition · Computer Science 2023-09-13 Ling Huang

It is important to extract good features using an encoder to realize semantic segmentation with high accuracy. Although loss function is optimized in training deep neural network, far layers from the layers for computing loss function are…

Image and Video Processing · Electrical Eng. & Systems 2021-01-21 Takamasa Ando , Kazuhiro Hotta

Interactive segmentation is a promising strategy for building robust, generalisable algorithms for volumetric medical image segmentation. However, inconsistent and clinically unrealistic evaluation hinders fair comparison and misrepresents…

Computer Vision and Pattern Recognition · Computer Science 2025-10-13 Parhom Esmaeili , Virginia Fernandez , Pedro Borges , Eli Gibson , Sebastien Ourselin , M. Jorge Cardoso

In recent years, much interdisciplinary research has been conducted exploring potential use cases of neuroscience to advance the field of information retrieval. Initial research concentrated on the use of fMRI data, but fMRI was deemed to…

Machine Learning · Computer Science 2024-10-17 Zenon Lamprou , Iakovos Tenedios , Yashar Moshfeghi

In the neuroevolution literature, research has primarily focused on evolving the number of nodes, connections, and weights in artificial neural networks. Few attempts have been made to evolve activation functions. Research in evolving…

Neural and Evolutionary Computing · Computer Science 2016-05-18 Justin Chen

Deep learning algorithms have become the golden standard for segmentation of medical imaging data. In most works, the variability and heterogeneity of real clinical data is acknowledged to still be a problem. One way to automatically…

Image and Video Processing · Electrical Eng. & Systems 2022-02-25 Arkadiy Dushatskiy , Gerry Lowe , Peter A. N. Bosman , Tanja Alderliesten

Multifractal analysis has revealed regularities in many self-seeding phenomena, yet its use in modern deep learning remains limited. Existing end-to-end multifractal methods rely on heavy pooling or strong feature-space decimation, which…

Computer Vision and Pattern Recognition · Computer Science 2025-12-03 Miguel L. Martins , Miguel T. Coimbra , Francesco Renna

Most recent semantic segmentation methods train deep convolutional neural networks with fully annotated masks requiring pixel-accuracy for good quality training. Common weakly-supervised approaches generate full masks from partial input…

Computer Vision and Pattern Recognition · Computer Science 2018-04-05 Meng Tang , Abdelaziz Djelouah , Federico Perazzi , Yuri Boykov , Christopher Schroers

Image segmentation enables to extract quantitative measures from scans that can serve as imaging biomarkers for diseases. However, segmentation quality can vary substantially across scans, and therefore yield unfaithful estimates in the…

Image and Video Processing · Electrical Eng. & Systems 2020-11-03 J. Senapati , A. Guha Roy , S. Pölsterl , D. Gutmann , S. Gatidis , C. Schlett , A. Peters , F. Bamberg , C. Wachinger

In this paper, we propose an improved Unet model for brain tumor image segmentation, which combines coordinate attention mechanism and ASPP module to improve the segmentation effect. After the data set is divided, we do the necessary…

Image and Video Processing · Electrical Eng. & Systems 2024-09-16 Zixuan Wang , Yanlin Chen , Feiyang Wang , Qiaozhi Bao

Supervised machine learning-based medical image computing applications necessitate expert label curation, while unlabelled image data might be relatively abundant. Active learning methods aim to prioritise a subset of available image data…