On Bias-free Crawling and Representative Web Corpora Roland Schäfer author 2016-08 text Proceedings of the 10th Web as Corpus Workshop Paul Cook editor Stefan Evert editor Roland Schäfer editor Egon Stemle editor Association for Computational Linguistics Berlin conference publication schafer-2016-bias 10.18653/v1/W16-2612 https://aclanthology.org/W16-2612/ 2016-08 99 105