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. 2020 Jan 20;22(1):126. doi: 10.3390/e22010126

Figure 2.

Figure 2

Basic summary statistics from the processed PG data. (a) Number of books with a text length larger than m; (b) Number of books which are compatible with being published in year t, i.e., year of author’s birth is 20 years prior and year of author’s death is after t; (c) Number of books (left axis) and number of tokens (right axis) which are assigned to a given language based on the metadata. en: English, fr: French, fi: Finnish, de: German, nl: Dutch, it: Italian, es: Spanish, pt: Portuguese, zh: Chinese, el: Greek, sv: Swedish, hu: Hungarian, eo: Esperanto, la: Latin, da: Danish, tl: Tagalog, ca: Catalan, pl: Polish, ja: Japanese, no: Norwegian, cy: Welsh, cs: Czech.