Quantum Navigation and Ranking in Complex Networks
Abstract
Complex networks are formal frameworks capturing the interdependencies between the elements of large systems and databases. This formalism allows to use network navigation methods to rank the importance that each constituent has on the global organization of the system. A key example is Pagerank navigation which is at the core of the most used search engine of the World Wide Web. Inspired in this classical algorithm, we define a quantum navigation method providing a unique ranking of the elements of a network. We analyze the convergence of quantum navigation to the stationary rank of networks and show that quantumness decreases the number of navigation steps before convergence. In addition, we show that quantum navigation allows to solve degeneracies found in classical ranks. By implementing the quantum algorithm in real networks, we confirm these improvements and show that quantum coherence unveils new hierarchical features about the global organization of complex systems.
Cite
@article{arxiv.1202.3471,
title = {Quantum Navigation and Ranking in Complex Networks},
author = {Eduardo Sánchez-Burillo and Jordi Duch and Jesús Gómez-Gardenes and David Zueco},
journal= {arXiv preprint arXiv:1202.3471},
year = {2012}
}
Comments
title changed, more real networks analyzed, version published in scientific reports