Results 1 to 10 of about 298,780 (335)

Optimal Model Averaging for Semiparametric Partially Linear Models with Censored Data

open access: yesMathematics, 2023
In the past few decades, model averaging has received extensive attention, and has been regarded as a feasible alternative to model selection. However, this work is mainly based on parametric model framework and complete dataset.
Guozhi Hu, Weihu Cheng, Jie Zeng
doaj   +1 more source

Empirical Density Estimation for Interval Censored Data

open access: yesAustrian Journal of Statistics, 2016
This paper is concerned with the nonparametric estimation of a density function when the data are incomplete due to interval censoring. The Nadaraya-Watson kernel density estimator is modified to allow description of such interval data.
Eugenia Stoimenova
doaj   +1 more source

Uncertainty Interpretation of the Machine Learning Survival Model Predictions

open access: yesIEEE Access, 2021
A method for interpreting uncertainty of predictions provided by machine learning survival models is proposed. It is called UncSurvEx and aims to determine which features of an analyzed example lead to uncertain predictions of an explainable black-box ...
Lev V. Utkin   +5 more
doaj   +1 more source

Tratamento de dados censurados em estudos ambientais

open access: yesQuímica Nova, 2014
Due to the inherent limitations of the analytical methods of measurement, environmental exposure data often present observations described as below a certain detection limit, also called left-censored data. Censored data directly interferes in almost all
Cristiano Christofaro   +1 more
doaj   +1 more source

Monitoring the Weibull Scale Parameter Based on Type I Censored Data Using a Modified EWMA Control Chart

open access: yesAxioms, 2023
In industrial production, the exponentially weighted moving average scheme is widely used to monitor shifts in product quality, especially small-to-moderate shifts.
Dan Yu   +5 more
doaj   +1 more source

A Residual Control Chart Based on Convolutional Neural Network for Normal Interval-Censored Data

open access: yesMathematics
To reduce reliability testing time, experiments are often terminated at a predetermined time, producing right-censored lifetime data. Alternatively, when test samples are inspected at fixed intervals, failures are only observed within these intervals ...
Pei-Hsi Lee
doaj   +1 more source

A scoping review of survival analysis methods for doubly interval censored data

open access: yesDiscover Applied Sciences
Doubly interval-censored data (DICD) often emerge in longitudinal studies, where the survival time, T = W  − V, denotes the duration between two connected events: the initial event time (V) and the subsequent event time (W), both of which are subject to ...
Himani Kotian   +3 more
doaj   +1 more source

Left‑Censored Samples from Skewed Distributions: Statistical Inference and Applications

open access: yesActa Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2018
Left‑censored data occur frequently in many areas. At present, researchers pay attention to skewed censored distributions more frequently. This paper deals with statistical inference of type I multiply left‑censored Weibull and exponential distributions.
Michal Fusek, Jaroslav Michálek
doaj   +1 more source

Nonlinear Regression With Censored Data [PDF]

open access: yesTechnometrics, 2007
Suppose that the random vector (X, Y) satisfies the regression model Y = m(X) + σ(X)ϵ, where m (·) = E(Y||·) belongs to some parametric class {mθ(·):θ∈} of regression functions, σ2(·) = var(Y||·) is unknown, and ϵ is independent of X. The response Y is subject to random right censoring, and the covariate X is completely observed.
Heuchenne, Cédric, Van Keilegom, Ingrid
openaire   +3 more sources

Identification of Outlying Observations with Quantile Regression for Censored Data [PDF]

open access: yes, 2014
Outlying observations, which significantly deviate from other measurements, may distort the conclusions of data analysis. Therefore, identifying outliers is one of the important problems that should be solved to obtain reliable results.
Cho, HyungJun   +2 more
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