arXiv
(411,768 recursos)
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Mostrando recursos 41 - 60 de 110
41.
Sparse Estimators and the Oracle Property, or the Return of Hodges'
Estimator - Leeb, Hannes; Poetscher, Benedikt M.
We point out some pitfalls related to the concept of an oracle property as
used in Fan and Li (2001, 2002, 2004) which are reminiscent of the well-known
pitfalls related to Hodges' estimator.
43.
Theoretical Aspects of the SOM Algorithm - Cottrell, Marie; Fort, Jean-Claude; Pagès, Gilles
On the one hand, it is very simple to
write down and to simulate, its practical properties are clear and easy to
observe.
44.
Traitement Des Donnees Manquantes Au Moyen De L'Algorithme De Kohonen - Cottrell, Marie; Ibbou, Smail; Letrémy, Patrick
Nous montrons comment il est possible d'utiliser l'algorithme d'auto
organisation de Kohonen pour traiter des donn\'ees avec valeurs manquantes et
estimer ces derni\`eres.
45.
Information-Based Asset Pricing - Brody, Dorje C.; Hughston, Lane P.; Macrina, Andrea
A new framework for asset price dynamics is introduced in which the concept
of noisy information about future cash flows is used to derive the price
processes.
46.
On the Computational Complexity of MCMC-based Estimators in Large
Samples - Belloni, Alexandre; Chernozhukov, Victor
In this paper we examine the implications of the statistical large sample
theory for the computational complexity of Bayesian and quasi-Bayesian
estimation carried out using Metropolis random walks.
52.
Multiple pattern matching: A Markov chain approach - Lladser, Manuel; Betterton, M. D.; Knight, Rob
RNA motifs typically consist of short, modular patterns that include base
pairs formed within and between modules.
53.
Density Estimation of Censored Data with Infinite-Order Kernels - Berg, Arthur; Politis, Dimitris N.
Higher-order accurate density estimation under random right censorship is
achieved using kernel estimators from a family of infinite-order kernels.
54.
On the Marginal Distributions of Stationary AR(1) Sequences - Satheesh, S; Sandhya, E
In this note we correct an omission in our paper (Satheesh and Sandhya, 2005)
in defining semi-selfdecomposable laws and also show with examples that the
marginal distributions of a stationary AR(1) process need not even be
infinitely divisible.
55.
Quantile and Probability Curves Without Crossing - Chernozhukov, Victor; Fernandez-Val, Ivan; Galichon, Alfred
The most common approach to estimating conditional quantile curves is to fit
a curve, typically linear, pointwise for each quantile.
56.
Improving Estimates of Monotone Functions by Rearrangement - Chernozhukov, Victor; Fernandez-Val, Ivan; Galichon, Alfred
Suppose that a target function is monotonic, namely, weakly increasing, and
an original estimate of the target function is available, which is not weakly
increasing.
58.
Semiparametric efficiency in GMM models with auxiliary data - Chen, Xiaohong; Hong, Han; Tarozzi, Alessandro
We study semiparametric efficiency bounds and efficient estimation of
parameters defined through general moment restrictions with missing data.
59.
Support vector machine for functional data classification - Rossi, Fabrice; Villa, Nathalie
In many applications, input data are sampled functions taking their values in
infinite dimensional spaces rather than standard vectors.
60.
Un r\'esultat de consistance pour des SVM fonctionnels par interpolation
spline - Villa, Nathalie; Rossi, Fabrice
Rather than relying on projection on a truncated Hilbert
basis as in our previous work, we use an implicit spline interpolation that
allows us to compute SVM on the derivatives of the studied functions.
41.
