Although superlatives are commonly used in natural language, so far there has been no large-scale computational investigation of the types of comparisons they express. This article describes a comprehensive annotation scheme for superlatives, which classifies superlatives according to their surface forms and motivates an initial focus on so-called “ISA superlatives”. This type of superlative comparison is especially suitable for a computational approach because both their targets and comparison sets are explicitly realised in the text, and the proposed annotation scheme offers guidelines for annotating the spans of such comparative elements. The annotations are tested and evaluated on 500 tokens of superlatives with good inter-annotator agreement. In addition to providing a platform for investigating superlatives on a larger scale, this research also introduces a new text-based Wikipedia corpus in which all superlative instances have been annotated according to the proposed annotation scheme, and which has been used to develop a tool that can reliably distinguish between different superlative types, and identify the comparative components of ISA superlatives.
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