منابع مشابه
Performance of the Viterbi Algorithm on a Polya Channel
The Performance of the Viterbi algorithm with a new Polya contagion noise process is analyzed. The markov channel is the memory channel usually studied in the bibliography. The Polya channel was introduced years ago as a special case of a memory channel. In this work, the Polya contagion scheme is considered as a noise process and a GaussPolya noise model is introduced this way in order to perf...
متن کاملRate of Convergence of the Discrete Polya Algorithm from Convex Sets. a Particular Case
In this work we deal with best approximation in `p , 1 < p ≤ ∞, n ≥ 2. For 1 < p < ∞, let hp denote the best `p -approximation to f ∈ R from a closed, convex subset K of R, f 6∈ K, and let h∗ be a best uniform approximation to f from K. In case that h∗ − f = (ρ1, ρ2, · · · , ρn), |ρj | = ρ for j = 1, 2, · · · , n, we show that the behavior of ‖hp − h∗‖ as p→∞ depends on a property of separation...
متن کاملthe algorithm for solving the inverse numerical range problem
برد عددی ماتریس مربعی a را با w(a) نشان داده و به این صورت تعریف می کنیم w(a)={x8ax:x ?s1} ، که در آن s1 گوی واحد است. در سال 2009، راسل کاردن مساله برد عددی معکوس را به این صورت مطرح کرده است : برای نقطه z?w(a)، بردار x?s1 را به گونه ای می یابیم که z=x*ax، در این پایان نامه ، الگوریتمی برای حل مساله برد عددی معکوس ارانه می دهیم.
15 صفحه اولObstruction sets for outer-cylindrical graphs
A graph is outer-cylindrical if it embeds in the sphere so that there are two distinct faces whose boundaries together contain all the vertices. The class of outer-cylindrical graphs is closed under minors. We give the complete set of 38 minor-minimal non-outer-cylindrical graphs, or equivalently, an excluded minor characterization of outercylindrical graphs. We also give the obstruction sets u...
متن کاملOn Polya-Friedman random walks
The Pólya process is an urn scheme arising in the context of the contagion spreading. It exhibits unstable persistence effects. The Friedman urn process is dual to the Pólya one with antipersistent stabilizing effects. It appears in a safety campaign problem. A Pólya-Friedman urn process is investigated with a tuning persistence parameter extrapolating the latter two extreme processes. The stud...
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ژورنال
عنوان ژورنال: Journal of Approximation Theory
سال: 1988
ISSN: 0021-9045
DOI: 10.1016/0021-9045(88)90027-5