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The “handedness” of language: Directional symmetry breaking of sign usage in words

Fig 2

Unequal representation of signs (1-grams) occurring at different positions in words in corpora written using different languages and writing systems.

The Lorenz curves in the 24 panels (corresponding to all the scripts analyzed here except English, which is shown in Fig 1) show the differences in the cumulative distribution function of the occurrence probability of signs at left terminal position (blue, dash-dot curve), right terminal position (purple, dashed curve) and at any position (red, solid curve) of a word written in a particular script. The thin broken diagonal line corresponds to a perfectly uniform distribution, deviation from which indicates the extent of heterogeneity of sign occurrence distributions. This is measured in terms of the Gini index, the corresponding values at the left terminal (L), right terminal (R) and any position (A) for a script being indicated in each panel.

Fig 2

doi: https://doi.org/10.1371/journal.pone.0190735.g002