  This paper has been withdrawn from arXiv.org due to a disagreement among the
authors related to several peer-review comments received prior to submission on
arXiv.org. Even though the current version of this paper is withdrawn, there
was no disagreement between authors on the novel work in this paper.
  One specific issue was the discussion of related work by Ikehara \& Clauset
(found on page 8 of the previously posted version). Peer-review comments on a
similar version made ALL authors aware that the discussion misrepresented their
work prior to submission to arXiv.org. However, some authors choose to post to
arXiv a minimally updated version without the consent of all authors or
properly addressing this attribution issue. ================ Original Paper
Abstract: Complex networks are often categorized according to the underlying
phenomena that they represent such as molecular interactions, re-tweets, and
brain activity. In this work, we investigate the problem of predicting the
category (domain) of arbitrary networks. This includes complex networks from
different domains as well as synthetically generated graphs from five different
network models. A classification accuracy of $96.6\%$ is achieved using a
random forest classifier with both real and synthetic networks. This work makes
two important findings. First, our results indicate that complex networks from
various domains have distinct structural properties that allow us to predict
with high accuracy the category of a new previously unseen network. Second,
synthetic graphs are trivial to classify as the classification model can
predict with near-certainty the network model used to generate it. Overall, the
results demonstrate that networks drawn from different domains (and network
models) are trivial to distinguish using only a handful of simple structural
properties.
