The STEM-ECR Dataset: Grounding Scientific Entity References in STEM Scholarly Content to Authoritative Encyclopedic and Lexicographic Sources
Table 6: Part-of-speech tag distribution in our corpus. N - Noun; MWE - multiword expression; SW - single word; ADJ - adjective; SYM - symbol; V - verb; NNP - proper noun; R - adverb; INIT - initialism; PREP - preposition
['[BOLD] Wikipedia POS', '[BOLD] Wikipedia %', '[BOLD] Wiktionary POS', '[BOLD] Wiktionary %']
The POS tags were obtained from Wiktionary, where entities that couldn’t be disambiguated are tagged as SW (Single Word) or MWE (Multi-Word Expression). These tags have a coarser granularity compared to the traditionally followed Penn Treebank tags with some unconventional tagging patterns (e.g., “North Sea” as NNP, “in vivo” as ADJ). From the distributions, except for nouns being the most EL and WSD instances, the rest of the table differs significantly between the two tasks in a sense reflecting the nature of the tasks. While MWE are the second highest EL instances, its corresponding PHRASE type is least represented in WSD. In contrast, while adverbs are the second highest in WSD, they are least in EL.