Comprehensive Annotation of Multiword Expressions in a Social Web Corpus
What it is about
The authors annotate every multiword expression (MWE) in a web corpus of about 55,000 words, sentence by sentence, without limiting the kinds of MWE. Groups of tokens need not be contiguous, and each MWE is either strong (idiomatic) or weak (a collocation). The corpus covers 723 documents and 3,812 sentences. It has 3,483 MWEs, which contain 15% of all tokens, and 87% of them are strong. 73% of the MWEs have two tokens and 21% have three. 15% of MWEs contain a gap, and 57% of sentences contain at least one MWE. Agreement is modest: the average inter-annotator F1 over ten pairs of five annotators is 65% on 200 sentences, and it rises to 77% between two pairs that negotiated their analyses. The guidelines cover verb-particle, verb-preposition and verb-noun expressions and proper names.
Ideas
- I1.
pragexpressions (read by meaning) anden/src/tok.rs: add a gap-aware matcher over the tagged tokens for verb-particle and verb-preposition MWEs such as "take ... into account", since the table automaton cannot match gaps. Measure the recall on this corpus's gappy MWEs, as a test only. - I2. Strength as a score: keep strong and weak MWEs as two levels in the expression base, and let a rule choose the strong reading only where the gold analysis is strong. Measure the strong-versus-weak split on the corpus, as a test only.
- I3. Gate for
annotsilver MWEs: use the paper's partial-credit F1 (a match if the groups overlap) on a 200-sentence hand-annotated sample, and accept a silver batch only when the pair-to-negotiated agreement pattern holds.
For Mova
The touch points are en/src/tok.rs (table automaton, multiword units), prag expressions, and annot for silver checks. The chapters are 19. The lexicon: vocabulary, multiword expressions and register and 22. Phrases: noun, adjective, adverb and prepositional phrases. The annotations are CC BY-NC, so the corpus is test-only; nothing from it enters the build. Measure first the gap recall of a gappy-MWE matcher against this corpus on the EWT sentences it covers.
Cite
@inproceedings{schneider2014comprehensive,
title = {{Comprehensive Annotation of Multiword Expressions in a Social Web Corpus}},
author = {Schneider, Nathan and Onuffer, Spencer and Kazour, Nora and Danchik, Emily and Mordowanec, Michael T. and Conrad, Henrietta and Smith, Noah A.},
booktitle = {Proceedings of the Ninth International Conference on Language Resources and Evaluation (LREC'14)},
year = {2014},
url = {https://aclanthology.org/L14-1433/}
}References
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