Approach : compare different transformations of z-scores I normalisation of vector length I clamping outliers ( e . g . | z | > 1 ) H 1

I Important application: literary authorship attribution I The Federalist Papers (Mosteller and Wallace 1963) I Who wrote the Bixby latter? (Grieve et al. 2018) I Did Shakespeare really exist? (Thisted and Efron 1987) I MHG poetry: Die Halbe Birne (Dimpel 2018) I Robert Galbraith (The Cuckoo’s Calling) = J. K. Rowling http://www.scientificamerican.com/article/how-a-computerprogram-helped-show-jk-rowling-write-a-cuckoos-calling/

[1]  Fotis Jannidis,et al.  Delta vs. N-Gram Tracing: Evaluating the Robustness of Authorship Attribution Methods , 2018, LREC.

[2]  Maciej Eder,et al.  Does size matter? Authorship attribution, small samples, big problem , 2015, Digit. Scholarsh. Humanit..

[3]  Jan Rybicki,et al.  The stylistics and stylometry of collaborative translation: Woolf's Night and Day in Polish , 2013, Lit. Linguistic Comput..

[4]  Maciej Eder,et al.  Deeper Delta across genres and languages: do we really need the most frequent words? , 2011, Lit. Linguistic Comput..

[5]  Peter W. H. Smith,et al.  Improving Authorship Attribution: Optimizing Burrows' Delta Method* , 2011, J. Quant. Linguistics.

[6]  Yoshiyuki Takeda,et al.  Comparative study on methods of detecting research fronts using different types of citation , 2009 .

[7]  S. Argamon,et al.  Changing of the guard , 2008, J. Assoc. Inf. Sci. Technol..

[8]  Shlomo Argamon,et al.  Interpreting Burrows's Delta: Geometric and Probabilistic Foundations , 2007, Lit. Linguistic Comput..

[9]  Hidetoshi Shimodaira,et al.  Pvclust: an R package for assessing the uncertainty in hierarchical clustering , 2006, Bioinform..

[10]  John Burrows,et al.  'Delta': a Measure of Stylistic Difference and a Guide to Likely Authorship , 2002, Lit. Linguistic Comput..

[11]  B. Efron,et al.  Did Shakespeare write a newly-discovered poem? , 1987 .

[12]  F. Mosteller,et al.  Inference in an Authorship Problem , 1963 .

[13]  F. Dimpel.  Die guten ins Töpfchen: Zur Anwendbarkeit von Burrows' Delta bei kurzen mittelhochdeutschen Texten nebst eines Attributionstests zu Konrads 'Halber Birne' , 2018, DHd.

[14]  David L. Hoover,et al.  Delta Prime? , 2004, Lit. Linguistic Comput..