Results 41 to 50 of about 1,365,805 (285)

Estimation of a Two-component Mixture Model with Applications to Multiple Testing [PDF]

open access: yes, 2015
We consider a two-component mixture model with one known component. We develop methods for estimating the mixing proportion and the unknown distribution nonparametrically, given i.i.d.~data from the mixture model, using ideas from shape restricted ...
Patra, Rohit Kumar, Sen, Bodhisattva
core   +2 more sources

Predicting Chronicity in Children and Adolescents With Newly Diagnosed Immune Thrombocytopenia at the Timepoint of Diagnosis Using Machine Learning‐Based Approaches

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Objectives To identify predictors of chronic ITP (cITP) and to develop a model based on several machine learning (ML) methods to estimate the individual risk of chronicity at the timepoint of diagnosis. Methods We analyzed a longitudinal cohort of 944 children enrolled in the Intercontinental Cooperative immune thrombocytopenia (ITP) Study ...
Severin Kasser   +6 more
wiley   +1 more source

Estimation of inertia demand in power systems considering wind power virtual inertia

open access: yesInternational Journal of Electrical Power & Energy Systems
The high proportion of renewable energy integrated into the grid through numerous power electronic devices has reduced the overall system inertia level and operational stability and caused poor disturbance resistance.
Hongchun SHU   +5 more
doaj   +1 more source

Exact Methods for Multistage Estimation of a Binomial Proportion [PDF]

open access: yes, 2013
We first review existing sequential methods for estimating a binomial proportion. Afterward, we propose a new family of group sequential sampling schemes for estimating a binomial proportion with prescribed margin of error and confidence level.
Chen, Xinjia, Chen, Zhengjia
core  

Estimating the Null and the Proportion of non-Null effects in Large-scale Multiple Comparisons [PDF]

open access: yes, 2006
An important issue raised by Efron in the context of large-scale multiple comparisons is that in many applications the usual assumption that the null distribution is known is incorrect, and seemingly negligible differences in the null may result in large
Cai, T. Tony, Jin, Jiashun
core   +4 more sources

A Systematic Review of Evidence on the Clinical Effectiveness of Surveillance Imaging in Children With Medulloblastoma and Ependymoma

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Surveillance imaging aims to detect tumour relapse before symptoms develop, but it's unclear whether earlier detection of relapse leads to better outcomes in children and young people (CYP) with medulloblastoma and ependymoma. This systematic review aims to identify relevant literature to determine the efficacy of surveillance magnetic ...
Lucy Shepherd   +3 more
wiley   +1 more source

Improved estimation of population proportion possessing sensitive attribute with unknown repeated trials in randomized response sampling

open access: yesStatistica, 2007
This paper proposes an estimator for population proportion p possessing sensitive attribute under unknown repeated trials model envisaged by Singh and Joarder (1997). The exact bias and mean square error of the proposed estimators are worked out.
Housila P. Singh, N. Mathur
doaj   +1 more source

Estimation and simulation for route choice proportion in multi-period urban rail transit control systems

open access: yesMeasurement + Control, 2023
As we all known, estimating the proportion of passenger route choice is of great significance in almost every aspect of urban rail transit control system, including passenger allocation, fare clearing and flow control strategies. Existing researches only
Yiyuan Yang   +4 more
doaj   +1 more source

Parameter Estimation of ZZ Distribution under Progressive Type-II Censored Data

open access: yesJournal of Harbin University of Science and Technology, 2021
ZZ distribution is suitable to describe the life variable of a type of storage products that rarely fail before a given design life,and the proportion of failures has increased significantly after the design life.
ZHAO Hong-kai, ZHANG Guo-zhi, WANG Ping
doaj   +1 more source

Classification with Asymmetric Label Noise: Consistency and Maximal Denoising

open access: yes, 2016
In many real-world classification problems, the labels of training examples are randomly corrupted. Most previous theoretical work on classification with label noise assumes that the two classes are separable, that the label noise is independent of the ...
Blanchard, Gilles   +4 more
core   +2 more sources

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