Gompertz

Large tests model's description for 2500 lines measurement:

With 2500 lines+

Description

This model will transform your data to y* = ln(y/y0) and fit the transformed data to the model. And then revert the transformation and show the results in the initial space.

M. H. Zwietering, I. Jongenburger, F. M. Rombouts, and K. van ’t Riet. Modeling of the bacterial growth curve. Applied and Environmental Microbiology, 56(6):1875–1881, June 1990.

Options

Does not include death phase
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Estimation is performed on log scale (base e)
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Listing 5 parameters

Title	Estimated parameter	Description	Bottom range for estimation	Top range for estimation
A		A=ln( Nmax / N0)
λ		lag until exponential growth occurs
μ max.		maximum growth rate
Ln(N(0))		Initial value for N	(n/a)	(n/a)
Optimal Cost		not used in the solver	(n/a)	(n/a)

Download table as .csv

RMSEclick here for more information Root Mean Square Error (RMSE): For more information: link to Wikipedia article	R2click here for more information For more information: link to Wikipedia article	Biasclick here for more information Bias Factor (Bf): For more information check Ross, T. Indices for performance evaluation of predictive models in food microbiology. Journal of Applied Bacteriology 81, 501–508 (1996). (link to journal article )	Accuracyclick here for more information Accuracry Factor (Af): For more information check Ross, T. Indices for performance evaluation of predictive models in food microbiology. Journal of Applied Bacteriology 81, 501–508 (1996). link to journal article

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