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. 2010 Mar 9;5(3):e9411. doi: 10.1371/journal.pone.0009411

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This is an open-access article distributed under the terms of the Creative Commons Public Domain declaration which stipulates that, once placed in the public domain, this work may be freely reproduced, distributed, transmitted, modified, built upon, or otherwise used by anyone for any lawful purpose.

This is an open-access article distributed under the terms of the Creative Commons Public Domain declaration, which stipulates that, once placed in the public domain, this work may be freely reproduced, distributed, transmitted, modified, built upon, or otherwise used by anyone for any lawful purpose.

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Inline graphic — A comparison of the real rank histogram (thin black line) and two control curves with the upper and lower bounds of the expected histogram of a random text of the same length in words (dashed lines) involving four English texts. is the frequency of the word of rank . For the random text we use the model with alphabet size . The expected histogram of the random text is estimated averaging over the rank histograms of random texts. For ease of presentation, the expected histogram is cut off at expected frequencies below . AAW: Alice's adventures in wonderland. H: Hamlet. DC: David Crockett. OS: The origin of species.

A comparison of the real rank histogram (thin black line) and two control curves with the upper and lower bounds of the expected histogram of a random text of the same length in words (dashed lines) involving four English texts. is the frequency of the word of rank . For the random text we use the model with alphabet size . The expected histogram of the random text is estimated averaging over the rank histograms of random texts. For ease of presentation, the expected histogram is cut off at expected frequencies below . AAW: Alice's adventures in wonderland. H: Hamlet. DC: David Crockett. OS: The origin of species.