Evaluation of baseline information retrieval for Polish open-domain Question Answering system Michał Marcińczuk author Adam Radziszewski author Maciej Piasecki author Dominik Piasecki author Marcin Ptak author 2013-09 text Proceedings of the International Conference Recent Advances in Natural Language Processing RANLP 2013 Ruslan Mitkov editor Galia Angelova editor Kalina Bontcheva editor INCOMA Ltd. Shoumen, BULGARIA Hissar, Bulgaria conference publication marcinczuk-etal-2013-evaluation https://aclanthology.org/R13-1056/ 2013-09 428 435