International Conference on Computer and Knowledge Engineering

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A Weighted TF-IDF-based Approach for Authorship Attribution

Authors :

Ali Abedzadeh¹ Reza Ramezani² Afsaneh Fatemi³

1- university of isfahan 2- university of isfahan 3- university of isfahan

Keywords :

Authorship Attribution, Author Identification, Information Retrieval, Term Frequency, TF-IDF

Abstract :

Authorship Attribution (AA) is a task in which a disputed text is automatically assigned to an author chosen from a list of candidate authors. To this end, a model is trained on a dataset of textual documents with known authors, which can be considered as a multi-class single-label classification task. In this paper, we approach this task differently by extending information retrieval techniques to train an AA model. It is based on weighting the AARR technique, presented in our previous study, to relax the value of term frequency. The efficiency of the proposed solution has been evaluated by conducting several experiments on six datasets. The results show the superiority of the proposed solution by improving the accuracy of IMDB, Gutenberg books, Poetry, Blogs, PAN2011, and Twitter datasets by 33%, 31%, 31%, 19%, 6%, and 1%, respectively, where the average improvement is 19.94% over all datasets. The best accuracy over these datasets is 88%, 82%, 67%, 90%, 65%, and 81% in the same respect. In addition, compared to the baseline system, the computation time of the proposed solution has been improved significantly (21.44X) by employing a dictionary-based indexing technique.

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