Some examples of, and some problems with, the use of nonlinear logistic regression in predictive food microbiology.

Abstract:

:A new technique, nonlinear logistic regression, is described for modelling binomially distributed data, i.e., presence/absence data where growth is either observed or not observed, for applications in predictive food microbiology. Some examples of the successful use of this technique are presented, where the controlling factors are temperature, water activity, pH and the concentration of lactic acid, a weakly dissociating organic acid. Generally speaking, good-fitting models were obtained, as evidenced using various performance measures and goodness-of-fit statistics. As may be expected with a new statistical technique, some problems were encountered with the implementation of the modelling approach and these are discussed.

journal_name

Int J Food Microbiol

authors

Ratkowsky DA

doi

10.1016/s0168-1605(01)00643-2

subject

Has Abstract

pub_date

2002-03-01 00:00:00

pages

119-25

issue

2-3

eissn

0168-1605

issn

1879-3460

pii

S0168-1605(01)00643-2

journal_volume

73

pub_type

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