Title
Generative Context Pair Selection for Multi-hop Question Answering.
Abstract
Compositional reasoning tasks like multi-hop question answering, require making latent decisions to get the final answer, given a question. However, crowdsourced datasets often capture only a slice of the underlying task distribution, which can induce unanticipated biases in models performing compositional reasoning. Furthermore, discriminatively trained models exploit such biases to get a better held-out performance, without learning the right way to reason, as they do not necessitate paying attention to the question representation (conditioning variable) in its entirety, to estimate the answer likelihood. In this work, we propose a generative context selection model for multi-hop question answering that reasons about how the given question could have been generated given a context pair. While being comparable to the state-of-the-art answering performance, our proposed generative passage selection model has a better performance (4.9% higher than baseline) on adversarial held-out set which tests robustness of model's multi-hop reasoning capabilities.
Year
Venue
DocType
2021
EMNLP
Conference
Citations 
PageRank 
References 
0
0.34
0
Authors
7
Name
Order
Citations
PageRank
Dheeru Dua1384.95
Cícero Nogueira dos Santos277137.83
Patrick Ng3164.43
ben athiwaratkun4151.96
Bing Xiang5140978.56
Matthew Gardner670438.49
Sameer Singh7106071.63