Text similarity has to determine how ‘close’ two pieces of text are both in surface closeness [lexical similarity] and meaning [semantic similarity]. For instance, how similar are the phrases “the…
E. Host, and B. Ostvold. SCAM '07: Proceedings of the Seventh IEEE International Working Conference on Source Code Analysis and Manipulation, page 193--202. Washington, DC, USA, IEEE Computer Society, (2007)