FLPK-BiSeNet: Federated learning based on priori knowledge and bilateral segmentation network for image edge extraction

L Teng, Y Qiao, M Shafiq, G Srivastava… - … on Network and …, 2023 - ieeexplore.ieee.org
Federated learning can effectively ensure data security and improve the problem of data
islanding. However, the performance of federated learning-based schemes could be better …

The extension of Rippa's algorithm beyond LOOCV

F Marchetti - Applied Mathematics Letters, 2021 - Elsevier
Rippa's algorithm is a well-known Leave-One-Out Cross Validation (LOOCV) scheme that is
adopted in Radial Basis Function (RBF) interpolation for the tuning of the shape parameter …

Unbiased CLEAN for STIX in Solar Orbiter

E Perracchione, F Camattari, A Volpara… - The Astrophysical …, 2023 - iopscience.iop.org
CLEAN is an iterative deconvolution method for radio and hard-X-ray solar imaging. In a
specific step of its pipeline, CLEAN requires the convolution between an idealized version of …

Escaping unknown discontinuous regions in blackbox optimization

C Audet, A Batailly, S Kojtych - SIAM Journal on Optimization, 2022 - SIAM
The design of key nonlinear systems often requires the use of expensive blackbox
simulations presenting inherent discontinuities whose positions in the variable space cannot …

Multivariate approximation at fake nodes

S De Marchi, F Marchetti, E Perracchione… - Applied Mathematics and …, 2021 - Elsevier
The main goal of the present paper is to extend the interpolation via the so-called mapped
bases without resampling to any basis and dimension. So far indeed, we investigated the …

Feature augmentation for the inversion of the Fourier transform with limited data

E Perracchione, AM Massone, M Piana - Inverse Problems, 2021 - iopscience.iop.org
We investigate an interpolation/extrapolation method that, given scattered observations of
the Fourier transform, approximates its inverse. The interpolation algorithm takes advantage …

Learning via variably scaled kernels

C Campi, F Marchetti, E Perracchione - Advances in Computational …, 2021 - Springer
We investigate the use of the so-called variably scaled kernels (VSKs) for learning tasks,
with a particular focus on support vector machine (SVM) classifiers and kernel regression …

Sequential Scan-Based Single-Dimension Multi-Voxel System Matrix Calibration for Open-Sided Magnetic Particle Imaging

J He, H Zhang, Y Li, G Li, S Lei, Z Qian… - … on Medical Imaging, 2024 - ieeexplore.ieee.org
Open-sided magnetic particle imaging (OS-MPI) has garnered significant interest due to its
potential for interventional applications. However, the system matrix calibration in OS-MPI …

Convergence results in image interpolation with the continuous SSIM

F Marchetti, G Santin - SIAM Journal on Imaging Sciences, 2022 - SIAM
Assessing the similarity of two images is a complex task that attracts significant efforts in the
image processing community. The widely used structural similarity index measure (SSIM) …

Stable discontinuous mapped bases: the gibbs–runge-avoiding stable polynomial approximation (GRASPA) method

S De Marchi, G Elefante, F Marchetti - Computational and Applied …, 2021 - Springer
The mapped bases or Fake Nodes Approach (FNA), introduced in De Marchi et al.(J Comput
Appl Math 364: 112347, 2020c), allows to change the set of nodes without the need of …