  In order to deal efficiently with the exponential growth of the Web services
landscape in composition life cycle activities, it is necessary to have a clear
view of its main features. As for many situations where there is a lot of
interacting entities, the complex networks paradigm is an appropriate approach
to analyze the interactions between the multitudes of Web services. In this
paper, we present and investigate the main interactions between semantic Web
services models from the complex network perspective. Results show that both
parameter and operation networks exhibit the main characteristics of typical
real-world complex networks such as the small-world property and an
inhomogeneous degree distribution. These results yield valuable insight in
order to develop composition search algorithms, to deal with security threat in
the composition process and on the phenomena which characterize its evolution.
