Overview of PAN 2021: Authorship Verification, Profiling Hate Speech Spreaders on Twitter, and Style Change Detection

The paper gives a brief overview of the three shared tasks organized at PAN 2021 lab on digital text forensics and stylometry hosted CLEF conference. include authorship verification across domains, author profiling for hate speech spreaders, style change detection multi-author documents. In part are new in they continue advance past tasks, with overall goal advancing state art, providing an objective evaluation newly developed benchmark datasets.