Is It Worth the Attention? A Comparative Evaluation of Attention Layers for Argument Unit Segmentation

Maximilian Spliethöver, Jonas Klaff, Hendrik Heuer


Abstract
Attention mechanisms have seen some success for natural language processing downstream tasks in recent years and generated new state-of-the-art results. A thorough evaluation of the attention mechanism for the task of Argumentation Mining is missing. With this paper, we report a comparative evaluation of attention layers in combination with a bidirectional long short-term memory network, which is the current state-of-the-art approach for the unit segmentation task. We also compare sentence-level contextualized word embeddings to pre-generated ones. Our findings suggest that for this task, the additional attention layer does not improve the performance. In most cases, contextualized embeddings do also not show an improvement on the score achieved by pre-defined embeddings.
Anthology ID:
W19-4509
Volume:
Proceedings of the 6th Workshop on Argument Mining
Month:
August
Year:
2019
Address:
Florence, Italy
Editors:
Benno Stein, Henning Wachsmuth
Venue:
ArgMining
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
74–82
Language:
URL:
https://aclanthology.org/W19-4509
DOI:
10.18653/v1/W19-4509
Bibkey:
Cite (ACL):
Maximilian Spliethöver, Jonas Klaff, and Hendrik Heuer. 2019. Is It Worth the Attention? A Comparative Evaluation of Attention Layers for Argument Unit Segmentation. In Proceedings of the 6th Workshop on Argument Mining, pages 74–82, Florence, Italy. Association for Computational Linguistics.
Cite (Informal):
Is It Worth the Attention? A Comparative Evaluation of Attention Layers for Argument Unit Segmentation (Spliethöver et al., ArgMining 2019)
Copy Citation:
PDF:
https://aclanthology.org/W19-4509.pdf
Code
 covis1819/worth-the-attention