搜索结果: 16-30 共查到“理学 `1-norm”相关记录75条 . 查询时间(0.039 秒)
Optimization of NWP model closure parameters using total energy norm of forecast error as a target
NWP model closure parameters forecast error
2014/12/19
We explore the use of dry total energy norm in
improving numerical weather prediction (NWP) model forecast skill. The Ensemble Prediction and Parameter Estimation System (EPPES) is utilized to estima...
On some extremal problems in certain harmonic function spaces of several variables related to mixed norm spaces
Distance estimates harmonic function unit ball Bergman spaces
2012/5/9
We provide some new estimates for distances in harmonic function spaces of several variables related to mixed norm spaces.Some of them extend previously known assertions in this direction in the unit ...
Norm inequalities for square functions in some Morrey's subspaces
amalgams spaces Morrey spaces commutator g-function of Littlewood-Paley Lusin area function
2012/5/9
We prove that the intrinsic square function and the intrinsic Littlewood-Paley $g^{\ast}_{\lambda}$-function as defined by Wilson, are bounded in a family of weighted subspaces of Morrey spaces. The c...
Littlewood asked how small the ratio $||f||_4/||f||_2$ (where $||.||_\alpha$ denotes the $L^\alpha$ norm on the unit circle) can be for polynomials $f$ having all coefficients in $\{1,-1\}$, as the de...
Linear System Identification via Atomic Norm Regularization
System identification Atomic norms Hankel operators Optimization
2012/4/18
This paper proposes a new algorithm for linear system identification from noisy measurements. The proposed algorithm balances a data fidelity term with a norm induced by the set of single pole filters...
Atomic norm denoising with applications to line spectral estimation
Atomic norm line spectral estimation Information Theory
2012/4/18
The sub-Nyquist estimation of line spectra is a classical problem in signal processing, but currently popular subspace-based techniques have few guarantees in the presence of noise and rely on a prior...
On High Moments and the Spectral Norm of Large Dilute Wigner Random Matrices
random matrices Wigner ensemble dilute random matrices
2011/9/22
Abstract: We consider a dilute version of the Wigner ensemble of n-dimensional random matrices H such that each row has in average \rho_n non-zero elements. We study asymptotic properties of the spect...
On Extreme Value Processes and the Functional D-Norm
Extreme value process functional D-norm functional domain of at-traction copula process generalized Pareto process Takahashi’s Theorem
2011/9/21
Abstract: We introduce a functional domain of attraction approach for stochastic processes, which is more general than the usual one based on weak convergence. The distribution function G of a continu...
Some Norm Estimates for Semimartingales--- Under Linear and Nonlinear Expectations
Martingale semimartingale quasimartingale G-expectation G-martingale G-semimartingale Doob-Meyer decompostition
2011/9/15
Abstract: In this paper we introduce two types of norms for semimartingales, under both linear and nonlinear expectations. The first norm is motivated by quasimartingales, and characterizes square int...
Norm closures of orbits of bounded operators
group action closure of orbit index of operator Fredholm operators semi-Fredholm operators closed range operators
2011/8/29
Abstract: To every bounded linear operator $A$ between Hilbert spaces $\mathcal{H}$ and $\mathcal{K}$ three cardinals $\iota_r(A)$, $\iota_i(A)$ and $\iota_f(A)$ and a binary number $\iota_b(A)$ are a...
A Block Lanczos with Warm Start Technique for Accelerating Nuclear Norm Minimization Algorithms
Lanczos Method Singular Value Decomposition Eigenvalue
2011/3/1
Recent years have witnessed the popularity of using rank minimization as a regularizer for various signal processing and machine learning problems.
Norm and anti-norm inequalities for positive semi-definite matrices
Matrix operator trace symmetric norm symmetric anti-norm
2011/2/25
Some subadditivity results involving symmetric (unitarily invariant) norms are obtained. For instance, if g(t) =Pm k=0 aktk is a polynomial of degree m with non-negative coefficients, then, for all po...
On norm sub-additivity and super-additivity inequalities for concave and convex functions
Matrix Norm Inequality Positive Semidefinite Matrix Convex
2011/1/20
Sub-additive and super-additive inequalities for concave and convex functions have been generalized to the case of matrices by several authors over a period of time.These lead to some interesting ineq...
$L^2$-norm and estimates from below for Riesz transforms on Cantor sets
$L^2$-norm estimates from below Riesz transforms Cantor sets
2011/1/18
The aim of this paper is to estimate the L2-norms of vector-valued Riesz trans-forms Rs
and the norms of Riesz operators on Cantor sets in Rd, as well as to study the distribution of values of Rs ...
Norm bounds for a transformed price vector in Sraffian systems
Norm bounds price vector Sraffian standard commodity
2010/9/20
This paper gives lower and upper bounds, which are expressed in terms of the ‘maximum column sum matrix norm’, for the largest and the smallest element of a transformed price vector in Sraffian system...