UKP-Athene: Multi-Sentence Textual Entailment for Claim Verification
This work addresses claim verification for fact-checking applications, but it is incremental as it builds on existing shared task frameworks.
The authors tackled the problem of verifying claims by extracting supporting or refuting facts from raw text, using a pipeline approach that scored third out of 23 systems in the FEVER shared task.
The Fact Extraction and VERification (FEVER) shared task was launched to support the development of systems able to verify claims by extracting supporting or refuting facts from raw text. The shared task organizers provide a large-scale dataset for the consecutive steps involved in claim verification, in particular, document retrieval, fact extraction, and claim classification. In this paper, we present our claim verification pipeline approach, which, according to the preliminary results, scored third in the shared task, out of 23 competing systems. For the document retrieval, we implemented a new entity linking approach. In order to be able to rank candidate facts and classify a claim on the basis of several selected facts, we introduce two extensions to the Enhanced LSTM (ESIM).