Results 31 to 40 of about 6,758,042 (253)

An Improvement in Maximum Likelihood Estimation of the Gompertz Distribution Parameters

Journal of Statistical Theory and Applications (JSTA), 2023
In this study, we will look at estimating the parameters of the Gompertz distribution. We know that the maximum likelihood technique is the most often used method in the literature for parameter estimation.
A. Al-Shomrani
semanticscholar   +1 more source

The Log-Expo Inverse Gompertz Distribution: properties and Estimations [PDF]

Maǧallaẗ Al-Buḥūṯ Al-Mālīyyaẗ wa Al-Tiğāriyyaẗ
This paper introduces the Log-Expo Inverse Gompertz Distribution (LET-IG) three-parameter distribution and examines some of its mathematical properties. The study derives the density distribution, reliability function, and hazard rate function.
محمد عبد القادر, تامر حسن   +1 more
doaj   +1 more source

The McDonald Gompertz distribution: Properties and applications [PDF]

Communications in Statistics - Simulation and Computation, 2015
This paper introduces a five-parameter lifetime model with increasing, decreasing, upside -down bathtub and bathtub shaped failure rate called as the McDonald Gompertz (McG) distribution. This new distribution extend the Gompertz, generalized Gompertz, generalized exponential, beta Gompertz and Kumaraswamy Gompertz distributions, among several other ...
Rasool Roozegar, Saeid Tahmasebi, Ali Akbar Jafari   +2 more
openaire   +2 more sources

Generalized Gompertz - Generalized Gompertz Distribution

Journal of Physics: Conference Series, 2019
In the present paper, we introduce a new generated family of continuous distributions based on generalized Gompertz distribution. Then generalized Gompertz - generalized Gompertz distribution is proposed as a special case of this new family. The probability density, cumulative distribution, reliability and hazard rate functions are introduced ...
M A A Boshi, S H Abid, N H Al-Noor
openaire   +1 more source

A Gompertz distribution for time scales

TURKISH JOURNAL OF MATHEMATICS, 2021
Summary: We investigate a family of probability distributions, with three parameters associated with the dynamic Gompertz function. We prove its existence for various parameter sets and discuss the existence of its time scale moments. Afterwards, we investigate the special case of discrete time scales, where it is shown that the discrete Gompertz ...
Tom CUCHTA, Robert Jon NIICHEL, Sabrina STREIPERT   +2 more
openaire   +2 more sources

Estimation of stress-strength reliability for generalized Gompertz distribution under progressive type-II censoring

Hacettepe Journal of Mathematics and Statistics, 2023
In this study, the stress-strength reliability, R = P(Y < X) where Y represents the stress of a component and X represents this component’s strength, is obtained when X and Y have two independents generalized Gompertz distribution with different shape ...
Fatma Çiftci, Buğra Saraçoğlu, Neriman Akdam, Yunus Akdoğan   +3 more
semanticscholar   +1 more source

Interplay between distribution of live cells and growth dynamics of solid tumours [PDF]

, 2012
Experiments show that simple diffusion of nutrients and waste molecules is not sufficient to explain the typical multilayered structure of solid tumours, where an outer rim of proliferating cells surrounds a layer of quiescent but viable cells and a ...
A Laird, A Laird, B Gompertz, C Bortner, D Ribatti, E Milotti, E Milotti, H Greenspan, I Tannock, J Freyer, J Freyer, J Moore, L Kunz-Schughart, M Tindall, R Araujo, R Chignola, R Chignola, R Chignola, R Chignola, R Sutherland, RE Kass, W Mueller-Klieser, W Mueller-Klieser, Ž Bajzer   +23 more
core   +1 more source

The Marshall-Olkin Extended Unit-Gompertz Distribution: its Properties, Simulations and Applications

Statistica, 2023
In this paper, a newbounded generalization of the unit-Gompertz distribution called the Marshall-Olkin extended unit-Gompertz distribution (MOEUGD) is introduced.
Festus Chukubogu Opone, Innocent Usuagba Akata, Emrah Altun   +2 more
doaj   +1 more source

Statistical Inference for Partially Observed Markov Processes via the R Package pomp [PDF]

, 2015
Partially observed Markov process (POMP) models, also known as hidden Markov models or state space models, are ubiquitous tools for time series analysis.
Ionides, Edward L., King, Aaron A., Nguyen, Dao   +2 more
core   +4 more sources

Estimation procedures for partially accelerated life test model based on unified hybrid censored sample from the Gompertz distribution

Eksploatacja i Niezawodnosc - Maintenance and Reliability, 2022
The accelerated life testing is the key methodology of evaluating product reliability rapidly. This paper presents statistical inference of Gompertz distribution based on unified hybrid censored data under constant-stress partially accelerated life test (
H. Panahi, S. Lone
semanticscholar   +1 more source