Chains-of-Reasoning at TextGraphs 2019 Shared Task: Reasoning over Chains of Facts for Explainable Multi-hop Inference
Rajarshi Das, Ameya Godbole, Manzil Zaheer, Shehzaad Dhuliawala, Andrew McCallum · 2019
This paper describes our submission to the shared task 1 on "Multi-hop Inference Explanation Regeneration" in TextGraphs workshop at EMNLP 2019 (Jansen and Ustalov, 2019).Our system identifies chains of facts relevant to explain an answer to an elementary science examination question.To counter the problem of 'spurious chains' leading to 'semantic drifts', we train a ranker that uses contextualized representation of facts to score its relevance for explaining an answer to a question.Our system 2 was ranked first w.r.t the mean average precision (MAP) metric outperforming the second best system by 14.95 points.1 https://github.com/umanlp/tg2019task 2 https://github.com/ameyagodbole/multihop_ inference_explanation_regeneration A balance is used for measuring mass;weight of an object; of a substance A graduated cylinder is used to measure volume of a liquid; of an object A graduated cylinder is a kind of instrument for measuring volume of liquids or objects Comparing requires measuring Marble is a kind of object; material A student wants to compare the masses and volumes of three marbles.Which two instruments should be used?Answer: Balance and graduated cylinder