  In this paper, two inhomogeneous single fluid models for the Universe, which
are able to naturally solve the $H_{0}$ tension problem, are discussed. The
analysis is based on a Bayesian Machine Learning approach that uses a
generative process. The adopted method allows to constrain the free parameters
of each model by using the model itself, only. The observable is taken to be
the Hubble parameter, obtained from the generative process. Using the full
advantages of our method, the models are constrained for two redshift ranges.
Namely, first this is done with mock $H(z)$ data over $z\in [0,2.5]$, thus
covering known $H(z)$ observational data, which are most helpful to validate
the fit results. Then, aiming to extend to redshift ranges to be covered by the
most recent ongoing and future planned missions, the models are constrained for
the range $z\in[0,5]$, too. Full validation of the results for this extended
redshift range will have to wait for the near future, when higher redshift
$H(z)$ data become available. This makes our models fully falsifiable. Finally,
our second model here is able to explain the BOSS reported value for $H(z)$ at
$z=2.34$.
