Gompertz distribution
The Odd Generalized Exponential Gompertz Distribution
... In this paper we propose a new lifetime model, called the odd generalized exponential gompertz distribution. We obtained some of its mathematical properties. Some structural properties of the new ...
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Nonlinear Least Squares Estimation of the Shifted Gompertz Distribution
... The goal of the LS method (see e.g. [2, 5, 10, 19, 20]) is to choose the unknown parameters of the shifted Gompertz distribution (1) such that the weighted sum of squared distances between the model and the ...
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On the properties and applications of the odd lindley-gompertz distribution
... in distribution theory and applications is that some data sets do not follow any of the existing and well known probability distributions appropriately and hence create a difficulty in the process of statistical ...
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Unit-Gompertz Distribution with Applications
... Benjamin Gompertz in 1825 introduced the Gompertz distribution in connection with human mortality and actuarial ...This distribution is a generalization of the exponen- tial ...
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Statistical Inference for Gompertz Distribution based on Progressive Type-II Censored Data with Binomial Removals
... The Gompertz model was formulated by Gompertz (1825) to fit mortality ...pertz distribution and its applications. The parameters of the Gompertz distribution have been estimated by Chen ...
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Classes of Ordinary Differential Equations Obtained for the Probability Functions of Gompertz and Gamma Gompertz Distributions
... the Gompertz and gamma Gompertz ...the distribution determine the nature of the respective ODEs and the range determines the existence of the ...gamma Gompertz distribution for a ...
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Bayesian Analysis of two Censored Shifted Gompertz Mixture Distributions using Informative and Noninformative Priors
... The modeling and forecasting of the diffusion of modernization has been a topic of increasing research interest in marketing and other fields of life. A good number of models on the acceptance and diffusion of new ...
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Performance Rating of the Exponentiated Generalized Gompertz Makeham Distribution: An Analytical Approach
... A different version of Gompertz distribution which is called Gompertz Makeham (GM) distribution was introduced by another British actuary, Makeham. He introduced a constant (Makeham terms) ...
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Limitations of the incidence density ratio as approximation of the hazard ratio
... the Gompertz distribution, with shape parameter α = 1, sample size N = 1000, and a relative average follow-up duration in the control group of 90%, are presented In Table 1 as an ...
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Inference for exponentiated general class of distributions based on record values
... The main objective of this paper is to suggest and study a new exponentiated general class (EGC) of distributions. Maximum likelihood, Bayesian and empirical Bayesian estimators of the parameter of the EGC of ...
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Volume 30 - Article 48 | Pages 1367–1396
... Figure A2 depicts analogous simulations that take advantage of the distinct childhood, adult, and background mortality components of the Siler model. Under some scenar- ios, the three-component model is better able to ...
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Comparison of Parametric Models: Appication to Hypertensive Patients in a Teaching Hospital, Awka
... statistical distribution for survival time will be credible alternative to proportional hazard models 8 ...Lognormal distribution and the result showed that lognormal survival model which has the lowest AIC ...
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Mixture of identical distributions of exponential, gamma, lognormal, weibull, gompertz approach to heterogeneous survival data
... and Gompertz-Gompertz to represent the heterogeneous survival data ...and Gompertz-Gompertz distributions were tested for the best fit to the simulated dataset as well as real survival ...
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Kinetics of Anaerobic Digestion of Water Hyacinth Using Poultry Litter as Inoculum
... Water hyacinth and its tendency of fast growth would have a great potential if seen as a raw material for biogas production as it is rich in nitrogen, essential nutrients and has a high content of fermentable matter [6]. ...
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The predictive ability of seven sigmoid curves used in modelling forestry growth : a thesis submitted to the Institute of Information Sciences and Technology in partial fulfilment of the requirements for the degree of Master of Applied Statistics at Massey University, February, 2000
... This indicates that the three-parameter Chapman-Richards model and the four-parameter Levakovic and Sloboda models are superior to the Hossfeld, Schumacher, Weibull and Gompertz models..[r] ...
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Fitting Of Gompertz Model Between Rainfall And Ground Water Levels – A Case Study
... through Gompertz model under consideration, for RF of zone-I is least and GWLs for zone-I Gompertz model is the most suitable model because MSEs for zone-I is ...zone-V Gompertz model is best ...
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Evaluation of Several Mathematical Models for Fitting the Growth and Kinetics of the Catechol-degrading Candida parapsilopsis: Part 1
... modified Gompertz, Von Bertalanffy, Baranyi-Robert and Buchanan three phase models could fit the experimental data but the best model according to statistical analysis is the Buchanan three ...
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Conyza sumatrensis Intrapopulation Variation in Response to Glufosinate
... Gompertz non-linear regression model was fitted to the data with ammonium concentration and accumulated frequencies as independent and dependent va- riables, respectively. The parameter estimates for the fitted ...
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Simple hierarchical and general nonlinear growth modeling in sheep
... and the single-born lambs had higher live weights, which may have been due to the hormonal and physiological differences between sexes, maternal conditions and milk production capacity, and the size of the uterus to grow ...
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Growth of abalone (Haliotis rubra) with implications for its productivity
... normal distribution with a constant variance was used as the source of residuals added to each simulated dataset, with the same variance used for each operating ...
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