Local-based semantic navigation on a networked representation of information.
José A. Capitán, Javier Borge-Holthoefer, Sergio Gómez, Juan Martinez-Romo, Lourdes Araujo, Jos6eacute; A. Cuesta, Alex Arenas.
PLoS ONE, Volume 7, Issue 8, e43694 (2012)

The size and complexity of actual networked systems hinders the access to a global knowledge of their structure. This fact
pushes the problem of navigation to suboptimal solutions, one of them being the extraction of a coherent map of the
topology on which navigation takes place. In this paper, we present a Markov chain based algorithm to tag networked
terms according only to their topological features. The resulting tagging is used to compute similarity between terms,
providing a map of the networked information. This map supports local-based navigation techniques driven by similarity.
We compare the efficiency of the resulting paths according to their length compared to that of the shortest path.
Additionally we claim that the path steps towards the destination are semantically coherent. To illustrate the algorithm
performance we provide some results from the Simple English Wikipedia, which amounts to several thousand of pages. The
simplest greedy strategy yields over an 80% of average success rate. Furthermore, the resulting content-coherent paths
most often have a cost between one- and threefold compared to shortest-path lengths.