On Named Entity Recognition in Targeted Twitter Streams in Polish. Jakub Piskorski author Maud Ehrmann author 2013-08 text Proceedings of the 4th Biennial International Workshop on Balto-Slavic Natural Language Processing Jakub Piskorski editor Lidia Pivovarova editor Hristo Tanev editor Roman Yangarber editor Association for Computational Linguistics Sofia, Bulgaria conference publication piskorski-ehrmann-2013-named https://aclanthology.org/W13-2413/ 2013-08 84 93