Figure 4. Normalized entropy and distribution of triggering intervals in single books of the Gutenberg dataset.

(a), (b), (c) Normalized entropy of words (as described in the main text) vs. the number of words occurrence, k. The entropy is averaged for each k over the words with the same number of occurrences. Results are displayed for the texts David Copperfield (a), Moby Dick (b) and Iliad (in the original greek version) (c). (d), (e), (f) Results for the distribution of triggering intervals for the same data as above. In all the cases, results for the actual data are compared with the two null models described in the section Methods.