A method uses linguistic units of analysis to identify the authorship of a document. The method is useful to determine authorship of brief documents, and in situations where there are less than ten documents per known author, i.e. when there is scarcity of text. The method analyzes parameters such as the syntax, punctuation, and, optionally the average word and paragraph length, and when the parameters are analyzed using statistical methods, obtains a high degree of reliability (90% accuracy). The method can be applicable to numerous languages other than English because the variables selected are characteristic of most languages. The reliability of the method is verified when subjected to a cross-validation statistical analysis.
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