  A number of novel experimental and theoretical results have recently been
obtained on active soft matter, demonstrating the various interesting universal
and anomalous features of this kind of driven systems. Here we consider a
fundamental but still unexplored aspect of the patterns arising in the system
of actively moving units, i.e., their segregation taking place when two kinds
of them with different adhesive properties are present. The process of
segregation is studied by a model made of self-propelled particles such that
the particles have a tendency to adhere only to those which are of the same
kind. The calculations corresponding to the related differential equations can
be made in parallel, thus a powerful GPU card allows large scale simulations.
We find that the segregation kinetics is very different from the non-driven
counterparts and is described by the new scaling exponents $z\simeq 1$ and
$z\simeq 0.8$ for the 1:1 and the non-equal ratio of the two constituents,
respectively. Our results are in agreement with a recent observation of
segregating tissue cells \emph{in vitro}.
