A Note on Estimation of Multi-Sigmoidal Gompertz Functions with Random Noise
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DOI: 10.3390/math7060541
Abstract: The behaviour of many dynamic real phenomena shows different phases, with each one following a sigmoidal type pattern. This requires studying sigmoidal curves with more than one inflection point. In this work, a diffusion process… read more here.
Keywords: sigmoidal; multi sigmoidal; estimation multi; gompertz ... See more keywords
Two Multi-Sigmoidal Diffusion Models for the Study of the Evolution of the COVID-19 Pandemic
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DOI: 10.3390/math9192409
Abstract: A proposal is made to employ stochastic models, based on diffusion processes, to represent the evolution of the SARS-CoV-2 virus pandemic. Specifically, two diffusion processes are proposed whose mean functions obey multi-sigmoidal Gompertz and Weibull-type… read more here.
Keywords: diffusion; evolution; two multi; sigmoidal diffusion ... See more keywords