Extracting fine-grained economic events from business news

Publication type
C1
Publication status
Published
Authors
Jacobs, G.M., & Hoste, V.
Editor
Mahmoud El-Haj, Vasiliki Athanasakou, Sira Ferradans, Catherine Salzedo, Ans Elhag, Houda Bouamor, Marina Litvak, Paul Rayson, George Giannakopoulos and Nikiforos Pittaras
Series
Proceedings of the 1st Joint Workshop on Financial Narrative Processing and MultiLing Financial Summarisation
Pagination
235-245
Publisher
COLING
Conference
COLING 2020 (Online (Barcelona, Spain))
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Abstract

Based on a recently developed fine-grained event extraction dataset for the economic domain, we present in a pilot study for supervised economic event extraction. We investigate how a state-of-the-art model for event extraction performs on the trigger and argument identification and classification. While F1-scores of above 50{%} are obtained on the task of trigger identification, we observe a large gap in performance compared to results on the benchmark ACE05 dataset. We show that single-token triggers do not provide sufficient discriminative information for a fine-grained event detection setup in a closed domain such as economics, since many classes have a large degree of lexico-semantic and contextual overlap.