  In this work we continue the investigation of different approaches to
conception and modeling of composite materials. The global method we focus on,
is called 'stochastic homogenization'. In this approach, the classical
deterministic homogenization techniques and procedures are used to compute the
macroscopic parameters of a composite starting from its microscopic properties.
The stochastic part is due to averaging over some series of samples, and the
fact that these samples fit into the concept of RVE (Representative Volume
Element) in order to reduce the variance effect.
  In this article, we present a novel method for computation of effective
electric properties of composites -- it is based on the analysis of the
connectivity graph (and the respective adjacency matrix) for each sample of a
composite material. We describe how this matrix is constructed in order to take
into account complex microscopic geometry. We also explain what we mean by
homogenization procedure for electrical conductivity, and how the constructed
matrix is related to the problem. The developed method is applied to a test
study of the influence of micromorphology of composites materials on their
conductivity.
