BoschAI @ Causal News Corpus 2023: Robust Cause-Effect Span Extraction using Multi-Layer Sequence Tagging and Data Augmentation Timo Pierre Schrader author Simon Razniewski author Lukas Lange author Annemarie Friedrich author 2023-09 text Proceedings of the 6th Workshop on Challenges and Applications of Automated Extraction of Socio-political Events from Text Ali Hürriyetoğlu editor Hristo Tanev editor Vanni Zavarella editor Reyyan Yeniterzi editor Erdem Yörük editor Milena Slavcheva editor INCOMA Ltd., Shoumen, Bulgaria Varna, Bulgaria conference publication schrader-etal-2023-boschai https://aclanthology.org/2023.case-1.5/ 2023-09 38 43