Some Notes about Inference for the Lognormal Diffusion Process with Exogenous Factors Román Román, Patricia Serrano-Pérez, Juan José Torres Ruiz, Francisco De Asís Lognormal diffusion process Exogenous factors Growth curves Maximum likelihood estimation Asymptotic distribution Different versions of the lognormal diffusion process with exogenous factors have been used in recent years to model and study the behavior of phenomena following a given growth curve. In each case considered, the estimation of the model has been addressed, generally by maximum likelihood (ML), as has been the study of several characteristics associated with the type of curve considered. For this process, a unified version of the ML estimation problem is presented, including how to obtain estimation errors and asymptotic confidence intervals for parametric functions when no explicit expression is available for the estimators of the parameters of the model. The Gompertz-type diffusion process is used here to illustrate the application of the methodology. 2019-05-02T14:18:46Z 2019-05-02T14:18:46Z 2018-05-21 info:eu-repo/semantics/article Román Román, P.; Serrano-Pérez, J.J.; Torres Ruiz, F.A. Some Notes about Inference for the Lognormal Diffusion Process with Exogenous Factors. Mathematics 2018, 6, 85; doi:10.3390/math6050085. 2227-7390 http://hdl.handle.net/10481/55573 10.3390/math6050085 eng http://creativecommons.org/licenses/by/3.0/es/ info:eu-repo/semantics/openAccess Atribución 3.0 España MDPI