Results 31 to 40 of about 143,582 (164)

Assessment of left-censored data treatment methods using stochastic simulation

open access: yesRBRH, 2023
The paper evaluates the influence of size series, percentage of censored data, and coefficients of variation used to generate synthetic series on the estimation of means, standard deviations, coefficients of variation, and medians in series with censored
Fábio Henrique Rodrigues da Silva   +1 more
doaj   +1 more source

Cost Analysis With Censored Data [PDF]

open access: yesMedical Care, 2009
Economic evaluation of medical interventions has become an accepted, and often required, adjunct to the standard effectiveness and safety assessment in clinical research. However, the statistical analysis can be challenging due to censored cost data, as commonly obtained in medical studies.
openaire   +2 more sources

Model Calibration With Censored Data

open access: yesTechnometrics, 2018
AbstractThe purpose of model calibration is to make the model predictions closer to reality. The classical Kennedy-O'Hagan approach is widely used for model calibration, which can account for the inadequacy of the computer model while simultaneously estimating the unknown calibration parameters.
Fang Cao   +3 more
openaire   +2 more sources

Quantile Regression for Doubly Censored Data [PDF]

open access: yesBiometrics, 2011
SummaryDouble censoring often occurs in registry studies when left censoring is present in addition to right censoring. In this work, we propose a new analysis strategy for such doubly censored data by adopting a quantile regression model. We develop computationally simple estimation and inference procedures by appropriately using the embedded ...
Ji, Shuang   +3 more
openaire   +3 more sources

FHtest: An R Package for the Comparison of Survival Curves with Censored Data

open access: yesJournal of Statistical Software, 2017
The Fleming-Harrington class for right-censored data was first introduced by Harrington and Fleming (1982). This class is widely used in survival analysis studies and it is a subset of the so-called weighted logrank test statistics.
Ramon Oller, Klaus Langohr
doaj   +1 more source

Fitting Penalized Estimator for Sparse Covariance Matrix with Left-Censored Data by the EM Algorithm

open access: yesMathematics
Estimating the sparse covariance matrix can effectively identify important features and patterns, and traditional estimation methods require complete data vectors on all subjects.
Shanyi Lin   +4 more
doaj   +1 more source

The Odds Exponential-Pareto IV Distribution: Regression Model and Application

open access: yesEntropy, 2020
This article introduces the odds exponential-Pareto IV distribution, which belongs to the odds family of distributions. We studied the statistical properties of this new distribution.
Lamya A. Baharith   +2 more
doaj   +1 more source

Impact of Censored or Penalized Data in the Genetic Evaluation of Two Longevity Indicator Traits Using Random Regression Models in North American Angus Cattle

open access: yesAnimals, 2021
This study aimed to evaluate the impact of different proportions (i.e., 20%, 40%, 60% and 80%) of censored (CEN) or penalized (PEN) data in the prediction of breeding values (EBVs), genetic parameters, and computational efficiency for two longevity ...
Hinayah R. Oliveira   +3 more
doaj   +1 more source

An EM algorithm for GMM parameter estimation in the presence of censored and dropped data with potential application for indoor positioning

open access: yesICT Express, 2019
In this paper, a specific type of incomplete data in Wi-Fi fingerprinting based indoor positioning systems (WF-IPS) is presented: censored and dropped mixture data. For fitting this type of data, a censored and dropped Gaussian Mixture Model (CD-GMM) was
Trung Kien Vu   +2 more
doaj   +1 more source

Censored Quantile Regression Redux

open access: yesJournal of Statistical Software, 2008
Quantile regression for censored survival (duration) data offers a more flexible alternative to the Cox proportional hazard model for some applications. We describe three estimation methods for such applications that have been recently incorporated into ...
Roger Koenker
doaj  

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