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Somayeh Ghafouri

Somayeh Ghafouri

Academic rank: Assistant Professor
ORCID: https://orcid.org/0000-0002-5966-8406
Education: PhD.
ScopusId: 57191919549
Faculty: Science
Address: Arak University
Phone:

Research

Title
One-sample Prediction based on Weibull Interval Censored Data
Type
Presentation
Keywords
Approximate maximum likelihood procedure‎, ‎Bootstrap samples‎, ‎Interval censoring‎, ‎Mean squared prediction error‎, ‎Monte Carlo simulation‎, ‎One-sample prediction.‎
Year
2016
Researchers Somayeh Ghafouri

Abstract

‎Interval censored data arise when a failure time say‎, ‎Y cannot be observed directly but can only be determined‎ ‎to lie in an interval obtained from a series of inspection times‎. ‎Therefore‎, ‎prediction of unobserved Y can be interesting issue‎. ‎ In this paper‎, ‎we will obtain the approximate maximum likelihood estimators (AMLEs) of unknown parameters in the Weibull distribution and using them‎, ‎we introduce a point predictor of Y in the i-th, i=1,2...,n interval‎, ‎as the expected value of the conditional distribution of Y given L and R. ‎In addition‎, ‎using the AMLEs of Weibull parameters‎, ‎the predictor of Y and percentile bootstrap‎, ‎we will get the 95% confidence bounds of unkown parameters as well as 95% prediction bound of Y in the i-th interval‎. ‎A Monte Carlo simulation study and an illustrative example presented to assess the proposed performance of the procedures. ‎