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Approximation by multivariate max-product Kantorovich-type operators and learning rates of least-squares regularized regression. (English) Zbl 1472.41011

In a recent paper, for univariate max-product sampling operators based on general kernels with bounded generalized absolute moments, the authors have obtained several \(L_\mu^p\) convergence properties on bounded intervals or on the whole real axis. In this paper, firstly the authors obtain quantitative estimates with respect to a K-functional, for the multivariate Kantorovich variant of these max-product sampling operators with the integrals written in terms of Borel probability measures. Applications of these approximation results to learning theory are obtained

MSC:

41A35 Approximation by operators (in particular, by integral operators)
41A25 Rate of convergence, degree of approximation
41A63 Multidimensional problems
Full Text: DOI

References:

[1] L. Angeloni; D. Costarelli; G. Vinti, A characterization of the convergence in variation for the generalized sampling series, Ann. Acad. Sci. Fenn. Math., 43, 755-767 (2018) · Zbl 1405.41010 · doi:10.5186/aasfm.2018.4343
[2] F. Asdrubali; G. Baldinelli; F. Bianchi; D. Costarelli; A. Rotili; M. Seracini; G. Vinti, Detection of thermal bridges from thermographic images by means of image processing approximation algorithms, Appl. Math. Comput., 317, 160-171 (2018) · Zbl 1426.94008 · doi:10.1016/j.amc.2017.08.058
[3] C. Bardaro; P. L. Butzer; R. L. Stens; G. Vinti, Kantorovich-type generalized sampling series in the setting of Orlicz spaces, Sampl. Theory Signal Image Process., 6, 19-52 (2007) · Zbl 1156.41307
[4] C. Bardaro; I. Mantellini, Generalized sampling approximation of bivariate signals: rate of pointwise convergence, Numer. Funct. Anal. Optim., 31, 131-154 (2010) · Zbl 1198.41006 · doi:10.1080/01630561003644702
[5] B. Bede, L. Coroianu and S. G. Gal, Approximation by Max-Product Type Operators, Springer, New York, 2016. · Zbl 1358.41013
[6] B. Bede, L. Coroianu and S. G. Gal, Approximation and shape preserving properties of the Bernstein operator of max-product kind, Int. J. Math. Math. Sci., 2009 (2009), Art. 590589, 26 pp. · Zbl 1188.41016
[7] P. L. Butzer, A survey of the Whittaker-Shannon sampling theorem and some of its extensions, J. Math. Res. Expos., 3, 185-212 (1983) · Zbl 0523.94003
[8] P. L. Butzer; H. G. Feichtinger; K. Grochenig, Error analysis in regular and irregular sampling theory, Appl. Anal., 50, 167-189 (1993) · Zbl 0818.42012 · doi:10.1080/00036819308840192
[9] P. L. Butzer; S. Riesz; R. L. Stens, Approximation of continuous and discontinuous functions by generalized sampling series, J. Approx. Theory, 50, 25-39 (1987) · Zbl 0654.41004 · doi:10.1016/0021-9045(87)90063-3
[10] L. Coroianu; D. Costarelli; S. G. Gal; G. Vinti, The max-product generalized sampling operators: convergence and quantitative estimates, Appl. Math. Comput., 355, 173-183 (2019) · Zbl 1428.41018 · doi:10.1016/j.amc.2019.02.076
[11] L. Coroianu, D. Costarelli, S. G. Gal and G. Vinti, Approximation by max-product sampling Kantorovich operators with generalized kernels, Anal. Appl., 2019, in press. · Zbl 1428.41018
[12] L. Coroianu; S. G. Gal, Approximation by nonlinear generalized sampling operators of max-product kind, Sampl. Theory Signal Image Process., 9, 59-75 (2010) · Zbl 1228.41015
[13] L. Coroianu; S. G. Gal, Approximation by max-product sampling operators based on sinc-type kernels, Sampl. Theory Signal Image Process., 10, 211-230 (2011) · Zbl 1346.94074
[14] L. Coroianu; S. G. Gal, Classes of functions with improved estimates in approximation by the max-product Bernstein operator, Anal. Appl., 9, 249-274 (2011) · Zbl 1226.41007 · doi:10.1142/S0219530511001856
[15] L. Coroianu; S. G. Gal, Approximation by truncated max-product operators of Kantorovich-type based on generalized \((\varphi, \psi)\)-kernels, Math. Meth. Appl. Sci., 41, 7971-7984 (2018) · Zbl 1405.41012 · doi:10.1002/mma.5262
[16] L. Coroianu; S. G. Gal, \(L^p\)-approximation by truncated max-product sampling operators of Kantorovich-type based on Fejér kernel, J. Integr. Equ. Appl., 29, 349-364 (2017) · Zbl 1371.41016 · doi:10.1216/JIE-2017-29-2-349
[17] L. Coroianu; S. G. Gal, Saturation results for the truncated max-product sampling operators based on sinc and Fejér-type kernels, Sampl. Theory Signal Image Process., 11, 113-132 (2012) · Zbl 1346.41004
[18] D. Costarelli; A. M. Minotti; G. Vinti, Approximation of discontinuous signals by sampling Kantorovich series, J. Math. Anal. Appl., 450, 1083-1103 (2017) · Zbl 1373.41018 · doi:10.1016/j.jmaa.2017.01.066
[19] D. Costarelli and A. R. Sambucini, Approximation results in Orlicz spaces for sequences of Kantorovich max-product neural network operators, Results Math., 73 (2018), Art. 15. · Zbl 1390.41019
[20] D. Costarelli, A. R. Sambucini and G. Vinti, Convergence in Orlicz spaces by means of the multivariate max-product neural network operators of the Kantorovich type and applications, Neural Comput. Appl., 31 (2019), 5069-5078.
[21] D. Costarelli; G. Vinti, Order of approximation for sampling Kantorovich type operators, J. Integr. Equ. Appl., 26, 345-368 (2014) · Zbl 1308.41016 · doi:10.1216/JIE-2014-26-3-345
[22] D. Costarelli; G. Vinti, Rate of approximation for multivariate sampling Kantorovich operators on some functions spaces, J. Integr. Equ. Appl., 26, 455-481 (2014) · Zbl 1308.41017 · doi:10.1216/JIE-2014-26-4-455
[23] D. Costarelli; G. Vinti, Approximation by max-product neural network operators of Kantorovich type, Results Math., 69, 505-519 (2016) · Zbl 1355.41009 · doi:10.1007/s00025-016-0546-7
[24] D. Costarelli; G. Vinti, Max-product neural network and quasi-interpolation operators activated by sigmoidal functions, J. Approx. Theory, 209, 1-22 (2016) · Zbl 1350.41001 · doi:10.1016/j.jat.2016.05.001
[25] D. Costarelli; G. Vinti, Pointwise and uniform approximation by multivariate neural network operators of the max-product type, Neural Netw., 81, 81-90 (2016) · Zbl 1439.41009
[26] D. Costarelli; G. Vinti, Convergence results for a family of Kantorovich max-product neural network operators in a multivariate setting, Math. Slovaca, 67, 1469-1480 (2017) · Zbl 1505.41005 · doi:10.1515/ms-2017-0063
[27] D. Costarelli; G. Vinti, Convergence for a family of neural network operators in Orlicz spaces, Math. Nachr., 290, 226-235 (2017) · Zbl 1373.47010 · doi:10.1002/mana.201600006
[28] D. Costarelli and G. Vinti, Estimates for the neural network operators of the max-product type with continuous and \(p\)-integrable functions, Results Math., 73 (2018), Art. 12. · Zbl 1390.41020
[29] D. Costarelli; G. Vinti, An inverse result of approximation by sampling Kantorovich series, Proc. Edinb. Math. Soc., 62, 265-280 (2019) · Zbl 1428.41019 · doi:10.1017/s0013091518000342
[30] S. Y. Güngör; N. Ispir, Approximation by Bernstein-Chlodowsky operators of max-product kind, Math. Commun., 23, 205-225 (2018) · Zbl 1423.41024
[31] A. Holhos, Weighted Approximation of functions by Meyer-König and Zeller operators of max-product type, Numer. Funct. Anal. Optim., 39, 689-703 (2018) · Zbl 1388.41015 · doi:10.1080/01630563.2017.1413386
[32] A. Holhos, Weighted approximation of functions by Favard operators of max-product type, Period. Math. Hungar., 77, 340-346 (2018) · Zbl 1413.41027 · doi:10.1007/s10998-018-0249-9
[33] B. Z. Li, Approximation by multivariate Bernstein-Durrmeyer operators and learning rates of least-squares regularized regression with multivariate polynomial kernels, J. Approx. Theory, 173, 33-55 (2013) · Zbl 1282.41009 · doi:10.1016/j.jat.2013.04.007
[34] O. Orlova; G. Tamberg, On approximation properties of generalized Kantorovich-type sampling operators, J. Approx. Theory, 201, 73-86 (2016) · Zbl 1329.41030 · doi:10.1016/j.jat.2015.10.001
[35] R. J. Ravier; R. S. Stichartz, Sampling theory with average values on the Sierpinski gasket, Constr. Approx., 44, 159-194 (2016) · Zbl 1357.28013 · doi:10.1007/s00365-016-9341-7
[36] R. L. Stens, Error estimates for sampling sums based on convolution integrals, Inform. Control, 45, 37-47 (1980) · Zbl 0456.94003 · doi:10.1016/S0019-9958(80)90857-8
[37] D. X. Zhou, Deep distributed convolutional neural networks: universality, Anal. Appl., 16, 895-919 (2018) · Zbl 1442.68214 · doi:10.1142/S0219530518500124
[38] D. X. Zhou, Universality of deep convolutional neural networks, Appl. Comput. Harmon. Anal., 48, 787-794 (2020) · Zbl 1434.68531 · doi:10.1016/j.acha.2019.06.004
[39] D. X. Zhou; K. Jetter, Approximation with polynomial kernels and SVM classifiers, Adv. Comput. Math., 25, 323-344 (2006) · Zbl 1095.68103 · doi:10.1007/s10444-004-7206-2
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