منابع مشابه
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Radial Basis Networks are a reliable and efficient tool for performing classification tasks. In networks that include a Gaussian output transform within the Pattern Layer neurons, the method of setting the σ-width of the Gaussian curve is critical to obtaining accurate classification. Many existing methods perform poorly in regions of the problem space between examples of differing classes, or ...
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The masses, total widths, and leptonic widths of three triplet s-wave bb states Y(4S), Y (5S), and Y(6S) are determined from measurements of the e+e annihilation cross section into hadrons for 10.55 & W & 11.25 GeV. The resonances are identified from potential model results and their properties are obtained with the help of a simplified coupled-channels calculation. We find M(4S) = 10.577 GeV, ...
متن کاملGelfand numbers and widths
In general, the Gelfand widths cn(T ) of a map T between Banach spaces X and Y are not equivalent to the Gelfand numbers cn(T ) of T . We show that cn(T ) = cn(T ) (n ∈ N) provided that X and Y are uniformly convex and uniformly smooth, and T has trivial kernel and dense range. c ⃝ 2012 Elsevier Inc. All rights reserved.
متن کاملMatrices and n-Widths
This paper is concerned with a collection of ideas and problems in approximation theory which lead to some solved and unsolved problems in matrix theory. As an example, consider the problem of approximating the identity matrix by matrices of fixed rank where the norm is taken to be the maximum of the absolute value of the elements of the matrix. This problem is unsolved.
متن کاملModular Spaces and K-widths
In this paper, we show that the ball measure of noncompactness of a modular space Xp is equal to the limit of its K -widths when p is a left continuous, s-convex modular function, without any ~rcondition. We also obtain a similar result for SF-spaces, when the SF-norm N is uniformly continuous. 1991 Mathematics Subject Classification: 46E30, 46A50, 46B99 1. Notation and definitions Throughout t...
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ژورنال
عنوان ژورنال: Journal of Approximation Theory
سال: 1986
ISSN: 0021-9045
DOI: 10.1016/0021-9045(86)90027-4