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Strong Rules for Discarding Predictors in Lasso-type Problems
Strong Rules Discarding Predictors Lasso-type Problems
2015/8/21
We consider rules for discarding predictors in lasso regression and related problems, for computational efficiency. El Ghaoui et al. (2010) propose “SAFE” rules, based on univariate inner products bet...
An Anscombe-type theorem
Anscombe theorem Exchangeability Random indices Random sums Stable convergence
2012/11/26
Let (X_n) be a sequence of random variables (with values in a separable metric space) and (N_n) a sequence of random indices. Conditions for X_{N_n} to converge stably (in particular, in distribution)...
Miura-type transformation for the Itoh-Narita-Bogoyavlenskii lattice
integrable lattice Miura-type transformation
2011/7/5
We show that by Miura-type transformation the Itoh-Narita-
Bogoyavlenskii lattice, for any n ≥ 1, is related with some differential-difference (modified)
equation. We present corresponding integrabl...
A Roe-type Riemann solver based on the spectral decomposition of the equations of Relativistic Magnetohydrodynamics
Roe-type Riemann solver spectral decomposition equations of Relativistic Magnetohydrodynamics
2011/3/2
In a recent paper (Ant´on et al. 2010) we have derived sets of right and left eigenvectors of the Jacobians of the relativistic MHD equations, which are regular and span a complete basis in any ...
Strong maximum principle for radiative tranfer type operators
Strong maximum principle tranfer type operators
2011/1/21
The strong maximum principle ((SMP) in short) for subsolutions of the radiative transfer type equations is shown in this paper. We treat a general class of integro-differential equations, defined in t...
Singularity analysis and integrability of a Burgers-type system by Foursov
Exactly Solvable and Integrable Systems (nlin.SI) Mathematical Physics (math-ph) Analysis of PDEs (math.AP)
2010/11/10
We apply the Painleve test for integrability of partial differential equations to a system of two coupled Burgers-type equations found by Foursov, which was recently shown by Sergyeyev to possess infi...
The Schwarzian variable associated with discrete KdV-type equations
Exactly Solvable and Integrable Systems (nlin.SI)
2010/11/10
We present a new construction related to systems of polynomials which are consistent on a cube. The consistent polynomials underlie the integrability of discrete counterparts of integrable partial dif...
Three Mappings Related to Chebyshev-type Inequalities
Chebyshev-type inequality Monotonicity Refinement
2010/1/22
In this paper, by the Chebyshev-type inequalities we define three mappings, investigate their main properties, give some refinements for Chebyshev-type inequalities, obtain some applications.