Enhancing the AI2 Diagrams Dataset Using Rhetorical Structure Theory

Abstract

This paper describes ongoing work on a multimodal resource based on the Allen Institute AI2 Diagrams (AI2D) dataset, which contains nearly 5000 grade-school level science diagrams that have been annotated for their elements and the semantic relations that hold between them. This emerging resource, named AI2D-RST, aims to provide a drop-in replacement for the annotation of semantic relations between diagram elements, whose description is informed by recent theories of multimodality and text-image relations. As the name of the resource suggests, the revised annotation schema is based on Rhetorical Structure Theory (RST), which has been previously used to describe the multimodal structure of diagrams and entire documents. The paper documents the proposed annotation schema, describes challenges in applying RST to diagrams, and reports on inter-annotator agreement for this task. Finally, the paper discusses the use of AI2D-RST for research on multimodality and artificial intelligence.

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