Results 121 to 130 of about 2,460,837 (296)
A note on generalised information criteria for structured sparse models
International Statistical Review, EarlyView.Summary We propose a generalised information criteria ( gic) that accounts for sparsity pattern in the model. We obtain both asymptotic and nonasymptotic results for model selection. Moreover, we show that the gic is useful for selecting the regularisation parameter in regularised m$$ m $$ estimation in high‐dimensional scenarios.
Eduardo Fonseca Mendes +1 more
wiley +1 more source
Lipschitz Classification of definable Surface SingularitiesÂ
, 2019 We consider the problem of Lipschitz classification of singularities of Real Surfaces definable in a polynomially bounded o-minimal structure (e.g., semialgebraic or subanalytic) with respect to the outer metric.
Gabrielov, Andrei
core +1 more source
Boundedness of Commutators of Marcinkiewicz Integrals on Nonhomogeneous Metric Measure Spaces
Journal of Function Spaces, 2015 Let (X,d,μ) be a metric measure space satisfying the upper doubling condition and geometrically doubling condition in the sense of Hytönen. The aim of this paper is to establish the boundedness of commutator Mb generated by the Marcinkiewicz integral M ...
Guanghui Lu, Shuangping Tao
doaj +1 more source
A Sufficient Condition for the CH-Rectifiability of Lipschitz Curves [PDF]
, 2006 Let γ : [a, b] → R1+k be Lipschitz and H >= 2 be an integer number. Then a sufficient condition, expressed in terms of further accessory Lipschitz maps, for the CH-rectifiability of γ ([a, b]) is ...
Delladio, Silvano
core
Fairness‐aware insurance pricing: A multi‐objective optimization approach
Journal of Risk and Insurance, EarlyView.Abstract Machine‐learning models can provide accurate predictions in insurance pricing, but can also increase disparities between protected groups. Existing fairness‐aware pricing approaches typically target one fairness notion at a time, making it difficult to compare trade‐offs between predictive accuracy, group fairness, individual fairness, and ...
Tim J. Boonen, Xinyue Fan, Zixiao Quan
wiley +1 more source
Geometric conditions and existence of bi-Lipschitz parameterizations
Duke Mathematical Journal, 1995 Let \(\Sigma\) be a locally compact set of Hausdorff dimension \(n\) in \(\mathbb{R}^{n+ m}\) and \(\zeta_0\) a point of \(\Sigma\). Set \[ \theta(r, \zeta)= \inf_L \{\textstyle{{1\over r}} D[Z\cap B(r, \zeta), L\cap B(r, \zeta)]\}, \] where the infimum is taken over all \(n\)-planes containing \(\zeta\), and \(D\) is the Hausdorff distance.
openaire +2 more sources
Journal of Time Series Analysis, EarlyView.ABSTRACT We propose a new formulation of the Vašičekmodel within the framework of functional data analysis. We treat observations (continuous‐time rates) within a suitably defined trading day as a single statistical object. We then consider a sequence of such objects, indexed by day.
Piotr Kokoszka +4 more
wiley +1 more source
Density‐Valued ARMA Models by Spline Mixtures
Journal of Time Series Analysis, EarlyView.ABSTRACT This paper proposes a novel framework for modeling time series of probability density functions by extending autoregressive moving average (ARMA) models to density‐valued data. The method is based on a transformation approach, wherein each density function on a compact domain [0,1]d$$ {\left[0,1\right]}^d $$ is approximated by a B‐spline ...
Yasumasa Matsuda, Rei Iwafuchi
wiley +1 more source
Observer Design for a Class of Lipschitz Nonlinear Systems with Output Uncertainty
工程科学与技术, 2013 :By means of linear matrix inequality (LMI) based Lyapunov method,a nonlinear observer was proposed for a class of Lipschitz nonlinear system with output uncertainty.The observer gain matrix was selected according to LMI with the output uncertainty ...
doaj
极大奇异积分算子的RBLO估计(A RBLO estimate for maximal singular integral operator)
Zhejiang Daxue xuebao. Lixue ban, 2011 Let μ be a positive Radon measure and satisfy a growth condition on Rd. Considering maximal Calderón-Zygmund singular integral operator whose kernel is k(x, y).
QUANYu-xia(全玉霞) +2 more
doaj +1 more source