Word correlations and entropy in real languages.

<p>(A) Normalized histograms of the fluctuation exponent <i>α</i> computed using Detrended Fluctuation Analysis (see <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0019875#s4" target="_blank">Materials and Methods</a>) for four languages. The medians of the distributions are statistically different (<i>p</i><10⁻⁵, Mann-Whitney <i>U</i>-test computed over all possible pairs). (B) Average fluctuation exponent, , as a function of the average entropy of the random texts, , for the same languages as shown in panel A.