Generalization Methods for In-Domain and Cross-Domain Opinion Holder Extraction Michael Wiegand author Dietrich Klakow author 2012-04 text Proceedings of the 13th Conference of the European Chapter of the Association for Computational Linguistics Walter Daelemans editor Association for Computational Linguistics Avignon, France conference publication wiegand-klakow-2012-generalization https://aclanthology.org/E12-1033/ 2012-04 325 335