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. 2016 Jul 13;3(7):160156. doi: 10.1098/rsos.160156

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© 2016 The Authors.

Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited.

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Figure 4. — Pattern detection using the multi-edge P-space representation. (a) Geographical representation of graph G_SP, where links correspond to the 1% best shortest paths of the whole public transportation network. (b) The normalized BiCross validation error computed for the adjacency matrix X_SP(10 km,11 km) (solid black line) of the same graph, for the associated random matrix X_SPrandom(10 km,11 km) (dotted line). The selected number of structures k_s is assigned by a red rhombus. (c,d) Two of the structures revealed in the PT system of Paris. Green dots are ingoing, while red dots are outgoing affiliated.