Data sets used for mainly internal purposes by the quanteda package.




An object of class integer of length 133245.

An object of class list of length 2.


data_int_syllables provides an English-language syllables dictionary; it is an integer vector whose element names correspond to English words.

data_char_wordlists provides word lists used in some readability indexes; it is a named list of character vectors where each list element corresponds to a different readability index.

These are:


The long Dale-Chall list of 3,000 familiar (English) words needed to compute the Dale-Chall Readability Formula.


The revised Spache word list (see Klare 1975, 73) needed to compute the Spache Revised Formula of readability (Spache 1974.


Chall, J.S., & Dale, E. (1995). Readability Revisited: The New Dale-Chall Readability Formula. Brookline Books.

Dale, E. & Chall, J.S. (1948). A Formula for Predicting Readability. Educational Research Bulletin, 27(1): 11--20.

Dale, E. & Chall, J.S. (1948). A Formula for Predicting Readability: Instructions. Educational Research Bulletin, 27(2): 37--54.

Klare, G.R. (1975). Assessing Readability. Reading Research Quarterly 10(1), 62--102.

Spache, G. (1953). A New Readability Formula for Primary-Grade Reading Materials. The Elementary School Journal, 53, 410--413.

Tränkle, U. & Bailer, H. (1984). Kreuzvalidierung und Neuberechnung von Lesbarkeitsformeln für die deutsche Sprache. Zeitschrift für Entwicklungspsychologie und Pädagogische Psychologie, 16(3), 231--244.

Wheeler, L.R. & Smith, E.H. (1954). A Practical Readability Formula for the Classroom Teacher in the Primary Grades. Elementary English, 31, 397--399.