Results 41 to 50 of about 405,072 (267)

General ranked set sampling for efficient treatment comparisons [PDF]

open access: yes, 2008
In treatment comparison experiments, the treatment responses are often correlated with some concomitant variables which can be measured before or at the beginning of the experiments.
Chen, Zehua   +3 more
core   +2 more sources

Deep metric learning to rank [PDF]

open access: yes, 2019
We propose a novel deep metric learning method by revisiting the learning to rank approach. Our method, named FastAP, optimizes the rank-based Average Precision measure, using an approximation derived from distance quantization.
Cakir, Fatih   +4 more
core   +1 more source

Sickle Cell Disease Is an Inherent Risk for Asthma in a Sibling Comparison Study

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Introduction Sickle cell disease (SCD) and asthma share a complex relationship. Although estimates vary, asthma prevalence in children with SCD is believed to be comparable to or higher than the general population. Determining whether SCD confers an increased risk for asthma remains challenging due to overlapping symptoms and the ...
Suhei C. Zuleta De Bernardis   +9 more
wiley   +1 more source

Some Modified Mean Estimators in Ranked Set Sampling Using a Covariate [PDF]

open access: yesJournal of Statistical Theory and Applications (JSTA), 2016
In this paper we modify nonparametric regression-based mean estimators in ranked set sampling using a covariate. We will show that our modified mean estimators perform well in comparison with their leading competitors.
Ehsan Zamanzade, Mohammad Mohammadi
doaj   +1 more source

On Maximum Likelihood Estimators of the Parameters of a Modified Weibull Distribution Using Extreme Ranked Set Sampling [PDF]

open access: yes, 2011
Extreme ranked set sampling (ERSS) is considered to estimate the three parameters and population mean of the modified Weibull distribution (MWD). The maximum likelihood estimator (MLE) is investigated and compared to the corresponding one based on simple
Al-Hadhrami, Said Ali   +1 more
core   +2 more sources

Survival for Children Diagnosed With Wilms Tumour (2012–2022) Registered in the UK and Ireland Improving Population Outcomes for Renal Tumours of Childhood (IMPORT) Study

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background The Improving Population Outcomes for Renal Tumours of childhood (IMPORT) is a prospective clinical observational study capturing detailed demographic and outcome data on children and young people diagnosed with renal tumours in the United Kingdom and the Republic of Ireland.
Naomi Ssenyonga   +56 more
wiley   +1 more source

Estimation of Generalized Gompertz Distribution Parameters under Ranked-Set Sampling

open access: yesJournal of Probability and Statistics, 2020
This paper studies estimation of the parameters of the generalized Gompertz distribution based on ranked-set sample (RSS). Maximum likelihood (ML) and Bayesian approaches are considered.
Mohammed Obeidat   +2 more
doaj   +1 more source

Generalized Power Transformation Estimators in Stratified Ranked Set Sampling using Auxiliary Information

open access: yesInternational Journal of Bio-Resource and Stress Management, 2023
Auxiliary variable is commonly used in survey sampling to improve the precision of estimates. Whenever there is auxiliary information available, the researchers want to utilize it in the method of estimation to obtain the most efficient estimator ...
Nitu Mehta (Ranka), Latika Sharma
doaj   +1 more source

Kernel-based estimation of P(X >Y) in ranked set sampling [PDF]

open access: yes, 2016
This article is directed at the problem of reliability estimation using ranked set sampling. A nonparametric estimator based on kernel density estimation is developed. The estimator is shown to be superior to its analog in simple random sampling.
Mahdizadeh, Mahdi, Zamanzade, Ehsan
core   +3 more sources

Adaptive query-based sampling of distributed collections [PDF]

open access: yes, 2006
As part of a Distributed Information Retrieval system a de-scription of each remote information resource, archive or repository is usually stored centrally in order to facilitate resource selection.
C. Zhai   +10 more
core   +4 more sources

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