Zobrazeno 1 - 10
of 73
pro vyhledávání: '"John Paul Ward"'
Publikováno v:
Epidemiologia, Vol 4, Iss 3, Pp 286-297 (2023)
Contact network models are recent alternatives to equation-based models in epidemiology. In this paper, the spread of disease is modeled on contact networks using bond percolation. The weight of the edges in the contact graphs is determined as a func
Externí odkaz:
https://doaj.org/article/62eb71aa876045a5a36bacd82b56526c
Autor:
Piotr Mikusiński, John Paul Ward
Publikováno v:
Annales Mathematicae Silesianae. 35:77-89
If ( μ n ) n = 1 ∞ \left( {{\mu _n}} \right)_{n = 1}^\infty are positive measures on a measurable space (X, Σ) and ( v n ) n = 1 ∞ \left( {{v_n}} \right)_{n = 1}^\infty are elements of a Banach space 𝔼 such that ∑ n = 1 ∞ ‖ v n ‖ μ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::96d70c35ac18566d5e3550964024f00b
https://doi.org/10.2478/amsil-2020-0022
https://doi.org/10.2478/amsil-2020-0022
Publikováno v:
Applied and Computational Harmonic Analysis. 49:540-557
We introduce intrinsic interpolatory bases for data structured on graphs and derive properties of those bases. Polyharmonic Lagrange functions are shown to satisfy exponential decay away from their centers. The decay depends on the density of the zer
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9aaf794f471b91cb22ad96b6ac5eb583
https://doi.org/10.1016/j.acha.2020.06.001
https://doi.org/10.1016/j.acha.2020.06.001
Publikováno v:
SIAM Journal on Imaging Sciences. 12:344-371
The detection of landmarks or patterns is of interest for extracting features in biological images. Hence, algorithms for finding these keypoints have been extensively investigated in the literature, and their localization and detection properties ar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::36010be87f91dba550dca435147b8d2f
https://doi.org/10.1137/18m1190690
https://doi.org/10.1137/18m1190690
Publikováno v:
IEEE Transactions on Image Processing
We present texture operators encoding class-specific local organizations of image directions (LOIDs) in a rotation-invariant fashion. The LOIDs are key for visual understanding, and are at the origin of the success of the popular approaches, such as
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6abb1dc2a81830b78a7cb3bdbd80c341
https://doi.org/10.1109/tip.2017.2655438
https://doi.org/10.1109/tip.2017.2655438
Publikováno v:
Applied and Computational Harmonic Analysis. 42:21-36
In this paper, we study the Besov regularity of L\'evy white noises on the $d$-dimensional torus. Due to their rough sample paths, the white noises that we consider are defined as generalized stochastic fields. We, initially, obtain regularity result
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6e58cc724a473d91ac9ecbef8173ff45
https://doi.org/10.1016/j.acha.2015.07.001
https://doi.org/10.1016/j.acha.2015.07.001
Publikováno v:
Journal of Fourier Analysis and Applications. 23:442-461
The Poisson summation formula (PSF) describes the equivalence between the sampling of an analog signal and the periodization of its frequency spectrum. In engineering textbooks, the PSF is usually stated formally without explicit conditions on the si
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fdf20c698e4c4af5c1a759380c068c7a
https://doi.org/10.1007/s00041-016-9475-9
https://doi.org/10.1007/s00041-016-9475-9
Publikováno v:
SIAM Journal on Imaging Sciences. 9:1042-1062
In analogy with steerable wavelets, we present a general construction of adaptable tight wavelet frames, with an emphasis on scaling operations. In particular, the derived wavelets can be "dilated" by a procedure comparable to the operation of steeri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f5bd14c8e5a9e9d22560882f632af698
https://doi.org/10.1137/15m1033885
https://doi.org/10.1137/15m1033885
Autor:
John Paul Ward
It is known that a Green's function-type condition may be used to derive rates for approximation by radial basis functions (RBFs). In this paper, we introduce a method for obtaining rates for approximation by functions which can be convolved with a f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3e8700c1a2375e12722c389e7b305558
http://doc.rero.ch/record/312394/files/10444_2011_Article_9263.pdf
http://doc.rero.ch/record/312394/files/10444_2011_Article_9263.pdf
Publikováno v:
Machine Learning in Medical Imaging ISBN: 9783030009182
MLMI@MICCAI
MLMI@MICCAI
We define and investigate the Local Rotation Invariance (LRI) and Directional Sensitivity (DS) of radiomics features. Most of the classical features cannot combine the two properties, which are antagonist in simple designs. We propose texture operato
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::094c2c81312fc14769d361f0daee1696
https://doi.org/10.1007/978-3-030-00919-9_13
https://doi.org/10.1007/978-3-030-00919-9_13