M. Shafiq, R. Viertl:
"On the Estimation of Parameters, Survival Functions, and Hazard Rates for Fuzzy Life Time Data";
Communications in Statistics - Theory and Methods, Vol. 46 (2017), Issue 10; S. 5035 - 5055.

Kurzfassung englisch:
Life time data analysis is regarded as one of the significant out-shoots of statistics. Classical statistical techniques reckon life time observations as precise numbers and solely cover variation among the observations. In fact, there are two types of uncertainty in data: variation among the observations and the fuzziness. To this effect, the analysis techniques, which do not consider fuzziness and are only based on precise life time observations, use incomplete information; hence lead to pseudo results. This study aimed at generalizing parameters estimation, survival functions, and hazard rates for fuzzy life time data.

Fuzzy number Hazard rate Life time Non-precise data Survival function

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