- Writer invariant
Writer invariant, also called authorial invariant or author's invariant, is property of a
text which isinvariant of itsauthor , that is, it will be similar in all texts of a given author and different in texts of different authors. It can be used to findplagiarism or discover who is real author of anonymously published text. Writer invariant is also an author's pattern of writing a letter in handwrittentext recognition . [cite paper|last=Ali Nosary, Laurent Heutte, Thierry Paquet and Yves Lecourtier |title=A Step Towards the Use of Writer's Properties for Text Recognition |publisher=Laboratoire Perception, Systèmes, Information (PSI), Université de Rouen |url=http://www.univ-rouen.fr/psi/heutte/download/ewhar98nosary.pdf |accessdate=2007-09-06]While it is generally recognised that writer invariants exist,cite journal |coauthors=Peng, Roger D. ; Hengartner, Nicolas W. |year=2002 |month=08 |title=Quantitative analysis of literary styles. (General). |journal=
The American Statistician |url=http://goliath.ecnext.com/coms2/summary_0199-1949753_ITM |accessdate= 2007-09-06] it is not agreed what properties of a text should be used.cite book |last=Fomenko |first=A. T. |authorlink=Anatoly Timofeevich Fomenko |coauthors=V. P. Fomenko and T. G. Fomenko |title=History: Fiction or Science? |origyear=2005 |year=2005 |isbn=2913621066 |pages=425-444 |chapter=The authorial invariant in Russian literary texts. Its application: who was the real author of the "Quiet Don"?] Among the first ones used was distribution ofword lengths; other proposed invariants include averagesentence length, average word length,noun ,verb oradjective usage frequency,vocabulary richness, and frequency offunction word s, or specific function words.Of these, average sentence lengths can be very similar in works of different authors or vary significantly even within a single work; average word lengths likewise turn out to be very similar in works of different authors. Analysis of function words shows promise because they are used by authors
unconscious ly.cite journal |last=Buckland |first=Warren |year= |month= |title=Forensic Semiotics |journal=The Semiotic Review of Books |volume=10 |issue=3 |url=http://www.chass.utoronto.ca/epc/srb/srb/foresem.html |accessdate=2007-09-06]References
ee also
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Stylometry
*Writeprint
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