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. 2020 Jun 5;15(6):e0231169. doi: 10.1371/journal.pone.0231169

Fig 1. Example of the QG method for a time series with T = 20, Q = 5, and k = 1, 2 and 5.

Fig 1

The quantile intervals for the sorted data are given by [x(0), x(4)[, [x(4), x(8)[, [x(8), x(12)[, [x(12), x(16)[, and [x(16), x(20)], i.e., [−7.783, −3.050[, [−3.050, 0.829[, [0.829, 4.657[, [4.657, 7.070[, and [7.070, 9.090]. The quantiles are mapped into three networks with N=5 nodes each and arc weights given by (1,1,1), (1,3,1), (1,5,2), (2,1,1), (2,2,1), (2,4,2), (3,3,2), (3,4,1), (4,1,1), (4,2,1), (4,3,1), (4,4,1), (5,1,1), (5,2,1), (5,5,2) for k = 1; (1,3,1), (1,5,2), (2,1,1), (2,4,2), (2,5,1), (3,2,1), (3,3,1), (3,4,1), (4,1,1), (4,3,2), (4,4,1), (5,1,1), (5,2,2), (5,5,1) for k = 2; and (1,4,1), (1,5,1), (2,3,2), (2,5,1), (3,1,2), (3,4,1), (4,2,1), (4,3,1), (4,4,1), (5,2,2), (5,3,1), (5,4,1) for k = 5.