Piggyback: Using Search Engines for Robust Cross-Domain Named Entity Recognition Stefan Rüd author Massimiliano Ciaramita author Jens Müller author Hinrich Schütze author 2011-06 text Proceedings of the 49th Annual Meeting of the Association for Computational Linguistics: Human Language Technologies Dekang Lin editor Yuji Matsumoto editor Rada Mihalcea editor Association for Computational Linguistics Portland, Oregon, USA conference publication rud-etal-2011-piggyback https://aclanthology.org/P11-1097/ 2011-06 965 975