Extraction and Normalization of Vague Time Expressions in German Ulrike May author Karolina Zaczynska author Julián Moreno-Schneider author Georg Rehm author 2021-6–9 sep text Proceedings of the 17th Conference on Natural Language Processing (KONVENS 2021) Kilian Evang editor Laura Kallmeyer editor Rainer Osswald editor Jakub Waszczuk editor Torsten Zesch editor KONVENS 2021 Organizers Düsseldorf, Germany conference publication may-etal-2021-extraction https://aclanthology.org/2021.konvens-1.10/ 2021-6–9 sep 114 126