Combining OCR Outputs for Logical Document Structure Markup. Technical Background to the ACL 2012 Contributed Task Ulrich Schäfer author Benjamin Weitz author 2012-07 text Proceedings of the ACL-2012 Special Workshop on Rediscovering 50 Years of Discoveries Rafael E Banchs editor Association for Computational Linguistics Jeju Island, Korea conference publication schafer-weitz-2012-combining https://aclanthology.org/W12-3212/ 2012-07 104 109