A simple and efficient algorithm for authorship verification
提出一种无监督的作者验证模型Spatium-L1，使用争议文本中最常见的200个词和标点作为特征，通过简单距离度量和冒充者集判断作者身份，在PAN CLEF 2014评测中表现优异。
This paper describes and evaluates an unsupervised and effective authorship verification model called S patium ‐L1. As features, we suggest using the 200 most frequent terms of the disputed text (isolated words and punctuation symbols). Applying a simple distance measure and a set of impostors, we can determine whether or not the disputed text was written by the proposed author. Moreover, based on a simple rule we can define when there is enough evidence to propose an answer or when the attribution scheme is unable to make a decision with a high degree of certainty. Evaluations based on 6 test collections ( PAN CLEF 2014 evaluation campaign) indicate that S patium ‐ L 1 usually appears in the top 3 best verification systems, and on an aggregate measure, presents the best performance. The suggested strategy can be adapted without any problem to different Indo‐European languages (such as E nglish, D utch, S panish, and G reek) or genres (essay, novel, review, and newspaper article).