Expanding a dictionary of marker words for uncertainty and negation using distributional semantics Alyaa Alfalahi author Maria Skeppstedt author Rickard Ahlbom author Roza Baskalayci author Aron Henriksson author Lars Asker author Carita Paradis author Andreas Kerren author 2015-09 text Proceedings of the Sixth International Workshop on Health Text Mining and Information Analysis Cyril Grouin editor Thierry Hamon editor Aurélie Névéol editor Pierre Zweigenbaum editor Association for Computational Linguistics Lisbon, Portugal conference publication alfalahi-etal-2015-expanding 10.18653/v1/W15-2611 https://aclanthology.org/W15-2611/ 2015-09 90 96