koRpus (version 0.04-40)

ARI: Readability: Automated Readability Index (ARI)

Description

This is just a convenient wrapper function for readability.

Usage

ARI(txt.file,
    parameters = c(asl = 0.5, awl = 4.71, const = 21.43),
    ...)

Arguments

txt.file

Either an object of class kRp.tagged-class, a character vector which must be be a valid path to a file containing the text to be analyzed, or a list of text features. If the latter, c

parameters

A numeric vector with named magic numbers, defining the relevant parameters for the index.

...

Further valid options for the main function, see readability for details.

Value

• An object of class kRp.readability-class.

Details

Calculates the Automated Readability Index (ARI). In contrast to readability, which by default calculates all possible indices, this function will only calculate the index value.

If parameters="NRI", the simplified parameters from the Navy Readability Indexes are used, if set to ARI="simple", the simplified formula is calculated.

This formula doesn't need syllable count.

References

DuBay, W.H. (2004). The Principles of Readability. Costa Mesa: Impact Information. WWW: http://www.impact-information.com/impactinfo/readability02.pdf; 22.03.2011.

Smith, E.A. & Senter, R.J. (1967). Automated readability index. AMRL-TR-66-22. Wright-Paterson AFB, Ohio: Aerospace Medical Division.

Examples

ARI(tagged.text)