rolling.delta {stylo}

Sequential stylometric analysis

Description

Function that analyses collaborative works and tries to determine the authorship of their fragments.

Usage

rolling.delta(gui = TRUE, path = NULL, primary.corpus.dir = "primary_set",
              secondary.corpus.dir = "secondary_set")

Arguments

gui

an optional argument; if switched on, a simple yet effective graphical user interface (GUI) will appear. Default value is TRUE.

path

if not specified, the current working directory will be used for input/output procedures (reading files, outputting the results).

primary.corpus.dir

the subdirectory (within the current working directory) that contains a collection of texts written by the authorial candidates, likely to have been involved in the collaborative work analyzed. If not specified, the default subdirectory primary_set will be used.

secondary.corpus.dir

the subdirectory (within the current working directory) that contains the collaborative work to be analyzed. If not specified, the default subdirectory secondary_set will be used.

Details

The procedure provided by this function analyses collaborative works and tries to determine the authorship of their fragments. The first step involves a "windowing" procedure (Dalen-Oskam and Zundert, 2007) in which each reference text is segmented into consecutive, equal-sized samples or windows. After "rolling" through the test text, we can plot the resulting series of Delta scores for each reference text in a graph.

Value

The function returns an object of the class stylo.results, and produces a final plot.

Author(s)

Mike Kestemont, Maciej Eder, Jan Rybicki

References

Eder, M., Rybicki, J. and Kestemont, M. (2016). Stylometry with R: a package for computational text analysis. "R Journal", 8(1): 107-21.

van Dalen-Oskam, K. and van Zundert, J. (2007). Delta for Middle Dutch: author and copyist distinction in Walewein. "Literary and Linguistic Computing", 22(3): 345-62.

Hoover, D. (2011). The Tutor's Story: a case study of mixed authorship. In: "Digital Humanities 2011: Conference Abstracts". Stanford University, Stanford, CA, pp. 149-51.

Rybicki, J., Kestemont, M. and Hoover D. (2014). Collaborative authorship: Conrad, Ford and rolling delta. "Literary and Linguistic Computing", 29(3): 422-31.

Eder, M. (2015). Rolling stylometry. "Digital Scholarship in the Humanities", 31(3): 457-69.

See Also

rolling.classify, stylo

Examples

## Not run: 
# standard usage:
rolling.delta()

# batch mode, custom name of corpus directories:
rolling.delta(gui = FALSE, primary.corpus.dir = "MySamples",
       secondary.corpus.dir = "ReferenceCorpus")

## End(Not run)