Varro: An Algorithm and Toolkit for Regular Structure Discovery in Treebanks Scott Martens author 2010-08 text Coling 2010: Posters Chu-Ren Huang editor Dan Jurafsky editor Coling 2010 Organizing Committee Beijing, China conference publication martens-2010-varro https://aclanthology.org/C10-2093/ 2010-08 810 818