Measuring style with the authorship ratio An invariant metric of lexical similarity
نویسندگان
چکیده
Stylometry is the study of the computational and mathematical properties of style. The aim of a stylometrist is to derive stylometrics and models based upon those metrics to quantitatively gauge stylistic propensities. This paper presents a method of formulating a stylistic distance function via a weighted ratio of lexical stylometrics, the higher the ratio the more the styles diverge. The coefficients of the distance function are estimated using Powell’s conjugate gradient method (Powell, 1964) on a 4 million word corpus of 19th Century literature. The distance metric proves accurate over 30,000 binary comparisons and rivals the discernment aptitude of established techniques (Labbé and Labbé, 2001). Previous metrics have suffered from sample-size dependencies, the metric proposed here is resilient to such bias.
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