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Theidiolect R package is designed to provide a comprehensive suite oftools for performing comparative authorship analysis within a forensiccontext using the Likelihood Ratio Framework (e.g. Ishihara 2021; Nini2023). The package contains a set of authorship analysis functions thattake a set of texts as input and output scores that can then becalibrated into likelihood ratios. The package is dependent onquanteda (Benoit et al. 2018) for all NaturalLanguage Processing functions.

You can installidiolect from CRAN:

install.packages("idiolect")

The main functions contained in the package reflect the typical workflowfor authorship analysis for forensic problems:

1. Input data usingcreate_corpus();

2. Optionally mask the content/topic of the texts usingcontentmask();

3. Launch an analysis (e.g. delta(),ngram_tracing(),impostors());

4. Test the performance of the method on ground truth data usingperformance();

5. Finally, apply the method to the questioned text and generate alikelihood ratio withcalibrate_LLR().

Check the website and the vignette for examples.