SIAMMAX
2010
13 years 5 months ago
2010
Abstract. We perform a smoothed analysis of the condition number of rectangular matrices. We prove that, asymptotically, the expected value of this condition number depends only of...
TCS
2011
13 years 5 months ago
2011
We give a high precision polynomial-time approximation scheme for the supremum of any honest n-variate (n + 2)-nomial with a constant term, allowing real exponents as well as real...
SIAMJO
2011
13 years 5 months ago
2011
Abstract. The condition number of a Gram matrix defined by a polynomial basis and a set of points is often used to measure the sensitivity of the least squares polynomial approxim...
CORR
2010
Springer
13 years 8 months ago
2010
Springer
We derive closed formulas for the condition number of a linear function of the total least squares solution. Given an over determined linear systems Ax = b, we show that this condi...
TCOM
2010
13 years 9 months ago
2010
Abstract—This paper investigates the distribution of the condition number of complex Wishart matrices. Two closely related measures are considered: the standard condition number ...
JC
2010
13 years 9 months ago
2010
In this paper we de ne a new condition number adapted to directionally uniform perturbations in a general framework of maps between Riemannian manifolds. The de nitions and theorem...
SIAMSC
2008
13 years 10 months ago
2008
Given a vector of floating-point numbers with exact sum s, we present an algorithm for calculating a faithful rounding of s, i.e. the result is one of the immediate floating-point ...
MP
2008
13 years 10 months ago
2008
We consider derivative free methods based on sampling approaches for nonlinear optimization problems where derivatives of the objective function are not available and cannot be dir...
JC
2008
13 years 10 months ago
2008
We show several estimates on the probability distribution of some data at points in real complete intersection varieties: norms of real affine solutions, condition number of real ...
AMC
2010
13 years 11 months ago
2010
In this paper, we investigate condition numbers of eigenvalue problems of matrix polynomials with nonsingular leading coefficients, generalizing classical results of matrix pertur...