搜索结果: 1-15 共查到“smoothness”相关记录30条 . 查询时间(0.066 秒)
Impact of Earnings Smoothness on Stock Prices, Stock Returns and Future Earnings Changes – the Polish Experience
Earnings smoothness Stock returns Stock valuation Valuation multiples
2016/1/27
Capital markets appreciate stability. It means that companies reporting smooth earnings patterns tend to be priced relatively high. However, the empirical issue is whether such valuation premiums for ...
Segmentation of point clouds using smoothness constraint
Laser scanning Point cloud segmentation Reverse Engineering Industrial Reconstruction
2015/8/24
For automatic processing of point clouds their segmentation is one of the most important processes. The methods based on curvature and other higher level derivatives often lead to over segmentation, w...
Adapting to Unknown Smoothness via Wavelet Shrinkage
Minimax Decision theory Stein's Unbiased Estimate of Risk
2015/8/20
We attempt to recover a function of unknown smoothness from noisy, sampled
data. We introduce a procedure, SureShrink, which suppresses noise by thresholding
the empirical wavelet coecients. The th...
A Simple Manifold-Based Construction of Surfaces of Arbitrary Smoothness
Geometric modeling manifolds
2015/7/14
We present a smooth surface construction based on the manifold approach of Grimm and Hughes. We demonstrate how this approach can relatively easily produce a number of desirable properties which are h...
The lasso penalizes a least squares regression by the sum of the absolute values
(L1-norm) of the coefficients. The form of this penalty encourages sparse solutions (with many
coefficien...
A note on the practical complexity of the NFS in the medium prime case: Smoothness of Norms
DLP NFS pairing based cryptography
2013/4/18
During an ongoing examination of the behaviour, in practice, of the Number Field Sieve (NFS) in the medium prime case we have noticed numerous interesting patterns. In this paper we present findings o...
Approximation of a random process with variable smoothness
locally stationary processes multifractional Brownian motion piecewise constant approximation
2012/6/25
We consider the rate of piecewise constant approximation to a locally stationary process $X(t),t\in [0,1]$, having a variable smoothness index $\alpha(t)$. Assuming that $\alpha(\cdot)$ attains its un...
An extension of solutions to convolution equations with the loss of smoothness
Homogeneous convolution equations mean periodic functions zeros of entire functions
2012/6/19
In the present paper the smoothness loss of an extension of solutions to convolution equations is studied. Also examples for some kinds of convolvers are given.
A note on essential smoothness in the Heston model
Essential smoothness large deviation principle Heston model
2011/10/9
Abstract: This note studies an issue relating to essential smoothness that can arise when the theory of large deviations is applied to a certain option pricing formula in the Heston model. The note id...
$C^1$-smoothness of Nemytskii operators on Sobolev-type spaces of periodic functions
Nemytskii operators Sobolev-type spaces of periodic functions C1-smoothness Functional Analysis
2011/9/19
Abstract: We consider a class of Nemytskii superposition operators that covers the nonlinear part of traveling wave models from laser dynamics, population dynamics, and chemical kinetics. Our main res...
On smoothness of isometries between orbit spaces
Isometric groups action singular Riemannian foliations invariant function basic form
2011/9/5
Abstract: We discuss the connection between the smooth and metric structure on quotient spaces, prove smoothness of isometries in special cases and discuss an application to a conjecture of Molino.
Smoothness of Extremizers of a Convolution Inequality
Extremizers Euler-Lagrange equation smoothness multilinear bounds
2011/2/28
Let d ≥ 2 and T be the convolution operator T f(x) = R Rd−1 f(x′ − t, xd − |t|2) dt, which is is bounded from L(d+1)/d(Rd) to Ld+1(Rd). We show that any critical point f ∈ L(d+1)/d o...
Weak convergence of empirical copula processes under nonrestrictive smoothness assumptions
Statistics Theory (math.ST)
2010/12/17
Weak convergence of the empirical copula process is shown to hold under the assumption that the first-order partial derivatives of the copula exist and are continuous on certain subsets of the unit hy...
Weak convergence of empirical copula processes under nonrestrictive smoothness assumptions
Archimedean copula Brownian bridge empirical copula empirical process
2011/1/20
Weak convergence of the empirical copula process is shown to hold under the assumption that the first-order partial derivatives of the copula exist and are continuous on certain subsets of the unit hy...
Implicit iteration methods in Hilbert scales under general smoothness conditions
Ill-posed problems inverse problems regularization Hilbert scales
2010/12/9
For solving linear ill-posed problems regularization methods are required when the right hand side is with some noise. In the present paper regularized solutions are obtained by implicit iteration met...