Probabilistic Graph Reasoning for Natural Proof Generation

An example of reasoning over natural language statements.


In this paper, we investigate the problem of reasoning over natural language statements. Prior neural based approaches do not explicitly consider the inter-dependency among answers and their proofs. In this paper, we propose PROBR, a novel approach for joint answer prediction and proof generation. PROBR defines a joint probabilistic distribution over all possible proof graphs and answers via an induced graphical model. We then optimize the model using variational approximation on top of neural textual representation. Experiments on multiple datasets under diverse settings(fully supervised, few-shot and zero-shot evaluation) verify the effectiveness of PROBR, e.g., achieving 10%-30% improvement on QA accuracy in few/zero-shot evaluation.

In The 59th Annual Meeting of the Association for Computational Linguistics (ACL 2021) - Findings
Jiangjie Chen
Jiangjie Chen
Ph.D. Candidate

His research interests mainly include natural language reasoning and knowledge-guided generation.