Beyond Worst-Case Analysis for Root Isolation Algorithms
Beyond Worst-Case Analysis for Root Isolation Algorithms
复制标题
根隔离算法超越最坏情况分析
DOI:
10.1145/3476446.3535475
复制
发表时间:
2022
期刊:
影响因子:
--
通讯作者:
Tsigaridas, Elias
中科院分区:
文献类型:
--
作者:
Ergür, Alperen;Tonelli-Cueto, Josué;Tsigaridas, Elias
Isolating the real roots of univariate polynomials is a fundamental problem in symbolic computation and it is arguably one of the most important problems in computational mathematics. The problem has a long history decorated with numerous ingenious algorithms and furnishes an active area of research. However, the worst-case analysis of root-finding algorithms does not correlate with their practical performance. We develop a smoothed analysis framework for polynomials with integer coefficients to bridge the gap between the complexity estimates and the practical performance. In this setting, we derive that the expected bit complexity of Descartes solver to isolate the real roots of a polynomial, with coefficients uniformly distributed, is ÕB(d2 + dτ), where d is the degree of the polynomial and τ the bitsize of the coefficients.
登录
查看更多内容
DOI:
10.1007/978-3-642-38896-5
发表时间:
2013-08
期刊:
--
影响因子:
--
作者:
Peter Bürgisser;F. Cucker
通讯作者:
Peter Bürgisser;F. Cucker
影响因子:
1
作者:
M. Rudelson;R. Vershynin
通讯作者:
R. Vershynin
影响因子:
3
作者:
D. Castro;J. L. Montaña;L. M. Pardo;Jorge San Martín
通讯作者:
Jorge San Martín
DOI:
--
发表时间:
2021
期刊:
IEEE Annual Symposium on Foundations of Computer Science
影响因子:
--
作者:
G. Moroz
通讯作者:
G. Moroz
DOI:
--
发表时间:
1971
期刊:
JACM
影响因子:
--
作者:
J. H. Wilkinson
通讯作者:
J. H. Wilkinson