Results 31 to 40 of about 88,814 (288)
The Scientific World Journal, 2013 We propose the weighted moments estimators (WMEs) of the location and scale parameters for the extreme value distribution based on the multiply type II censored sample.
Jong-Wuu Wu +3 more
doaj +1 more source
On Generalized Upper(k)Record Values From Weibull Distribution
Statistica, 2015 In this paper we study the generalized upper(k)record values arising from Weibull distribution. Expressions for the moments and product moments of those generalized upper(k)record values are derived.
Jerin Paul, Poruthiyudian Yageen Thomas
doaj +1 more source
Design-based composite estimation of small proportions in small domains
Nonlinear Analysis, 2023 Traditional direct estimation methods are inefficient for domains of a survey population with small sample sizes. To estimate the domain proportions, we combine the direct estimators and the regression-synthetic estimators based on domain-level ...
Andrius Čiginas
doaj +1 more source
Constrained Best Linear Unbiased Estimation
, 2017 The least squares (LS) estimator and the best linear unbiased estimator (BLUE) are two well-studied approaches for the estimation of a deterministic but unknown parameter vector. In many applications it is known that the parameter vector fulfills some constraints, e.g., linear constraints.
Lang, Oliver +2 more
openaire +2 more sources
All about the ⊥ with its applications in the linear statistical models
Open Mathematics, 2015 For an n x m real matrix A the matrix A⊥ is defined as a matrix spanning the orthocomplement of the column space of A, when the orthogonality is defined with respect to the standard inner product ⟨x, y⟩ = x'y.
Markiewicz Augustyn, Puntanen Simo
doaj +1 more source
Mean squared error of empirical predictor
, 2004 The term ``empirical predictor'' refers to a two-stage predictor of a linear combination of fixed and random effects. In the first stage, a predictor is obtained but it involves unknown parameters; thus, in the second stage, the unknown parameters are ...
Das, Kalyan +2 more
core +2 more sources
A Blended Sea Ice Concentration Product from AMSR2 and VIIRS
Remote Sensing, 2021 An effective blended Sea-Ice Concentration (SIC) product has been developed that utilizes ice concentrations from passive microwave and visible/infrared satellite instruments, specifically the Advanced Microwave Scanning Radiometer-2 (AMSR2) and the ...
Richard Dworak +3 more
doaj +1 more source
Sharp Oracle Inequalities for Aggregation of Affine Estimators [PDF]
, 2012 We consider the problem of combining a (possibly uncountably infinite) set of affine estimators in non-parametric regression model with heteroscedastic Gaussian noise.
Dalalyan, Arnak, Salmon, Joseph
core +6 more sources
Molecular Oncology, EarlyView.This work identified serum proteins associated with pancreatic epithelial neoplasms (PanINs) and early‐stage PDAC. Proteomics screens assessed genetically engineered mice with abundant PanINs, KPC mice (Lox‐STOP‐Lox‐KrasG12D/+ Lox‐STOP‐Lox‐Trp53R172H/+ Pdx1‐Cre) before PDAC development and also early‐stage PDAC patients (n = 31), compared to benign ...
Hannah Mearns +10 more
wiley +1 more source
GEOGRAPHY MATTERS IN ONLINE HOTEL REVIEWS [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016 In resonance with the popularity of user-generated contents (UGC) and the volunteered geographic information (VGI), this study crowdsourced 77,098 hotel reviews of 220 hotels provided by U.S. reviewers in the city of San Francisco, 2002 to 2015.
M. Wang, X. Zhou
doaj +1 more source