Clause Final Verb Prediction in Hindi: Evidence for Noisy Channel Model of Communication

Kartik Sharma, Niyati Bafna, Samar Husain


Abstract
Verbal prediction has been shown to be critical during online comprehension of Subject-Object-Verb (SOV) languages. In this work we present three computational models to predict clause final verbs in Hindi given its prior arguments. The models differ in their use of prior context during the prediction process – the context is either noisy or noise-free. Model predictions are compared with the sentence completion data obtained from Hindi native speakers. Results show that models that assume noisy context outperform the noise-free model. In particular, a lossy context model that assumes prior context to be affected by predictability and recency captures the distribution of the predicted verb class and error sources best. The success of the predictability-recency lossy context model is consistent with the noisy channel hypothesis for sentence comprehension and supports the idea that the reconstruction of the context during prediction is driven by prior linguistic exposure. These results also shed light on the nature of the noise that affects the reconstruction process. Overall the results pose a challenge to the adaptability hypothesis that assumes use of noise-free preverbal context for robust verbal prediction.
Anthology ID:
2021.cmcl-1.20
Volume:
Proceedings of the Workshop on Cognitive Modeling and Computational Linguistics
Month:
June
Year:
2021
Address:
Online
Editors:
Emmanuele Chersoni, Nora Hollenstein, Cassandra Jacobs, Yohei Oseki, Laurent Prévot, Enrico Santus
Venue:
CMCL
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
160–170
Language:
URL:
https://aclanthology.org/2021.cmcl-1.20
DOI:
10.18653/v1/2021.cmcl-1.20
Bibkey:
Cite (ACL):
Kartik Sharma, Niyati Bafna, and Samar Husain. 2021. Clause Final Verb Prediction in Hindi: Evidence for Noisy Channel Model of Communication. In Proceedings of the Workshop on Cognitive Modeling and Computational Linguistics, pages 160–170, Online. Association for Computational Linguistics.
Cite (Informal):
Clause Final Verb Prediction in Hindi: Evidence for Noisy Channel Model of Communication (Sharma et al., CMCL 2021)
Copy Citation:
PDF:
https://aclanthology.org/2021.cmcl-1.20.pdf
Optional supplementary material:
 2021.cmcl-1.20.OptionalSupplementaryMaterial.pdf
Optional supplementary data:
 2021.cmcl-1.20.OptionalSupplementaryData.pdf