Alleviating the Knowledge-Language Inconsistency: A Study for Deep Commonsense Knowledge
IEEE/ACM Transactions on Audio, Speech, and Language Processing(2022)
Abstract
Knowledge facts are typically represented by relational triples, while we observe that some commonsense facts are represented by triples whose forms are inconsistent with the corresponding language expressions. For commonsense mining tasks, this inconsistency raises a challenge for the prevailing methods using pre-trained language models that learn the expression of language. However, there are few studies which focus on this inconsistency issue. To fill this empty, in this paper, we term the commonsense knowledge whose triple form is heavily inconsistent with the language expression as
deep commonsense knowledge
and first conduct extensive exploratory experiments to study deep commonsense knowledge. We show that deep commonsense knowledge occupies a significant part of commonsense knowledge, while the conventional methods based on pre-trained language models fail to capture it effectively. We further propose a novel method to mine the deep commonsense knowledge from raw text that is exactly language expression, alleviating the reliance of conventional methods on the triple representation form. Experiments demonstrate that our proposed method substantially improves the performance in mining deep commonsense knowledge.
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Key words
commonsense knowledge,pre-trained language model,inconsistency
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