  The recently proposed non-additive stochastic model (NSM) offers a coherent
physical interpretation for diffusive phenomena in glass-forming systems. This
model presents non-exponential relationships between viscosity, activation
energy, and temperature, characterizing the non-Arrhenius behavior observed in
supercooled liquids. In this work, we fit the NSM viscosity equation to
experimental temperature-dependent viscosity data corresponding to twenty-five
glass-forming liquids and compare the fit parameters with those obtained using
the Vogel-Fulcher-Tammann (VFT), Avramov-Milchev (AM), and
Mauro-Yue-Ellison-Gupta-Allan (MYEGA) models. The results demonstrate that the
NSM provides an effective fitting equation for modeling viscosity experimental
data in comparison with other established models (VFT, AM and MYEGA),
characterizing the activation energy in fragile liquids, presenting a reliable
indicator of the degree of fragility of the glass-forming liquids.
