Results 11 to 20 of about 294,096 (237)

Estimating Dynamic Signals From Trial Data With Censored Values

open access: yesComputational Psychiatry, 2017
Censored data occur commonly in trial-structured behavioral experiments and many other forms of longitudinal data. They can lead to severe bias and reduction of statistical power in subsequent analyses.
Ali Yousefi   +4 more
doaj   +1 more source

Rotation survival forest for right censored data [PDF]

open access: yesPeerJ, 2015
Recently, survival ensembles have found more and more applications in biological and medical research when censored time-to-event data are often confronted.
Lifeng Zhou, Qingsong Xu, Hong Wang
doaj   +2 more sources

Residual Control Chart Based on a Convolutional Neural Network and Support Vector Regression for Type-I Censored Data with the Weibull Model

open access: yesMathematics, 2023
Control charts with conditional expected value (CEV) can be used with novel statistical techniques to monitor the means of moderately and lowly censored data.
Pei-Hsi Lee, Shih-Lung Liao
doaj   +1 more source

Statistical Modeling and Estimation of Censored Pathloss Data [PDF]

open access: yes, 2015
Pathloss is typically modeled using a log-distance power law with a large-scale fading term that is log-normal. However, the received signal is affected by the dynamic range and noise floor of the measurement system used to sound the channel, which can ...
Abbas, Taimoor   +3 more
core   +2 more sources

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

Responder Identification in Clinical Trials with Censored Data [PDF]

open access: yes, 2003
We present a newly developed technique for identification of positive and negative responders to a new treatment which was compared to a classical treatment (or placebo) in a randomized clinical trial.
Kehl, V., Ulm, Kurt
core   +2 more sources

TL-Moments for Type-I Censored Data with an Application to the Weibull Distribution

open access: yesMathematical and Computational Applications, 2018
This paper aims to provide an adaptation of the trimmed L (TL)-moments method to censored data. The present study concentrates on Type-I censored data. The idea of using TL-moments with censored data may seem conflicting. However, our perspective is that
Hager A. Ibrahim   +3 more
doaj   +1 more source

Gross alpha and beta activities in drinking water from Goiás state, Brazil

open access: yesBrazilian Journal of Radiation Sciences, 2019
Detection of gross alpha and beta radioactivity is important for a quick surveying of both natural and anthropogenic radioactivity in water. Furthermore, gross alpha and gross beta parameters are included in Brazilian legislation on quality of drinking ...
Raquel Maia Mingote   +2 more
doaj   +1 more source

Maximum-Likelihood Estimation of a Log-Concave Density based on Censored Data [PDF]

open access: yes, 2014
We consider nonparametric maximum-likelihood estimation of a log-concave density in case of interval-censored, right-censored and binned data. We allow for the possibility of a subprobability density with an additional mass at $+\infty$, which is ...
Duembgen, Lutz   +2 more
core   +2 more sources

Weighted Empirical Likelihood for Accelerated Life Model with Various Types of Censored Data

open access: yesStats
In analysis of survival data, the Accelerated Life Model (ALM) is one of the widely used semiparametric models, and we often encounter various types of censored survival data, such as right censored data, doubly censored data, interval censored data ...
Jian-Jian Ren, Yiming Lyu
doaj   +1 more source

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