SciCo: Hierarchical Cross-Document Coreference for Scientific ConceptsDownload PDF

Jun 22, 2021 (edited Sep 01, 2021)AKBC 2021Readers: Everyone
  • Keywords: Cross-document coreference resolution, computer sciences, scientific c
  • Abstract: Determining coreference of concept mentions across multiple documents is a fundamental task in natural language understanding. Previous work on cross-document coreference resolution (CDCR) typically considers mentions of events in the news, which seldom involve abstract technical concepts that are prevalent in science and technology. These complex concepts take diverse or ambiguous forms and have many hierarchical levels of granularity (e.g., tasks and subtasks), posing challenges for CDCR. We present a new task of Hierarchical CDCR (H-CDCR) with the goal of jointly inferring coreference clusters and hierarchy between them. We create SciCo, an expert-annotated dataset for H-CDCR in scientific papers, 3X larger than the prominent ECB+ resource. We study strong baseline models that we customize for H-CDCR, and highlight challenges for future work. Data and code are available at
  • Subject Areas: Information Extraction
  • Archival Status: Archival
  • Supplementary Material: zip
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