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A Mathematical Explanation of Burrows's Delta Sterling Stein Shlomo Argamon
 

Summary: A Mathematical Explanation of Burrows's Delta
Sterling Stein Shlomo Argamon
Linguistic Cognition Laboratory
Department of Computer Science
Illinois Institute of Technology
Chicago, IL 60616
1 Introduction
While many methods have been applied to the prob-
lem of automated authorship attribution, John F.
Burrows's "Delta Method" [1] is a particularly sim-
ple, yet effective, one [2, 3]. The goal is to automat-
ically determine, based on a set of known training
documents labeled by their authors, who the most
likely author is for an unlabeled test document. The
Delta method uses the most frequent words in the
training corpus as the features that it uses to make
these judgments. The Delta measure is defined as:
the mean of the absolute differences be-
tween the z-scores for a set of word-
variables in a given text-group and the z-

  

Source: Argamon, Shlomo - Department of Computer Science, Illinois Institute of Technology

 

Collections: Computer Technologies and Information Sciences