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A Corpus-Based Tool for Exploring Domain-Specific Collocations in English

Paper · 2013 · Ping-Yu Huang, Chien-Ming Chen, Nai-Lung Tsao et al.

Summary

General academic vocabulary lists such as Coxhead's Academic Word List (AWL) assume that one shared set of words serves students in every field. Following Hyland and Tse's critique, the authors argue that these words behave differently by discipline: they occur at different rates, combine with different partners, and sometimes carry different senses. To give EAP learners discipline-specific phrasing, they built TechCollo, an online tool for looking up collocations within one domain and comparing them across domains or against general English. It draws on six medium-sized specialized corpora covering medicine, engineering and law. For each domain there is one corpus derived from Wikipedia and one built from journal articles, and two general reference corpora are also available. Candidate word pairs are ranked by raw frequency, traditional MI, and a sense-normalized variant called normMI. A pilot study compared AWL nouns in the medical and engineering Wikipedia corpora. Many of these nouns were unevenly distributed and took field-specific verb collocates, which supports the case for collocation lists organized by discipline.

Key points

  • The domain corpora are the Medical, Engineering and Legal Wiki Corpora (MWC, EWC, LWC), built from WaCkypedia_EN, which came already tagged and parsed with TreeTagger and MaltParser. Alongside them are the Medical, Engineering and Legal Academic Corpora (MAC, EAC, LAC), built from 280, 408 and 106 articles taken from sixty journals and processed with Stanford CoreNLP.
  • Each domain corpus holds roughly 1.8–5.5M tokens. The general comparison corpora are Wikipedia (about 834M tokens) and the BNC (about 95M tokens).
  • normMI (Wible et al., 2004) adjusts traditional MI by dividing a lexeme's frequency by its number of WordNet senses. It rests on Yarowsky's one-sense-per-collocation assumption, and its purpose is to stop collocations of very frequent words, such as make a decision, from being undervalued.
  • In the pilot, area combined with rub and scratch only in medical texts, where it referred to a patch of body surface. The two fields also chose different verbs for similar meanings, for example confer vs offer benefit and undergo vs undertake research.
  • Planned work includes per-discipline word lists with frequency indexing and tests of paradigmatic modifiability (Wermter and Hahn) and of combined association measures (Pecina) to raise extraction precision.

Interesting ideas

  • I1. Normalizing an association score by a word's sense count keeps frequent, polysemous words from losing out in collocation ranking, since frequency spread over many senses is not penalized as raw MI would penalize it.
  • I2. A distinctive collocate can reveal a domain-specific sense: a noun that pairs with verbs found only in one field, such as area with rub, is probably being used in that field's meaning.
  • I3. The comparison view separates collocates into "shared" and "only in domain A or B" columns, which makes cross-corpus differences easy to inspect by hand.
  • I4. Each domain has two corpora of different kinds, encyclopedic and journal-based, plus general reference corpora, so domain effects can be separated from register effects.
  • I5. Different fields prefer different verbs for the same idea, so a single default verb choice can sound unidiomatic.

For Mova

How these ideas could serve Mova, our small open language model — its files, stages and tests:

  • I1 (world): Sense-normalized association scores could weight the verb–noun preferences stored in compiled knowledge so that light verbs like make or take keep meaningful links.
  • I2 (frames): When choosing a frame or WordNet sense for an argument noun, the governing verb's domain-restricted collocates could serve as explainable evidence for one sense over another.
  • I3 (learn): The same three-way split could be used to compare parser or frame outputs on two registers, showing what generalizes and what is specific to one corpus.
  • I4 (learn): Silver data and evaluations could likewise be grouped by register within a topic, so that improvements are checked on both encyclopedic and expert text before they are trusted.
  • I5 (back): During generation from the meaning graph, the system could pick the verb realization preferred in the text's domain, for example undertake research in engineering-style output.

Our summary of the paper, in our own words — not its text. The work belongs to its authors; read it at the links above.

 Institutions

Also on the byline: Ming Chi University of Technology.

 Fields, topics and concepts

Cite

Cite as Ping-Yu Huang, Chien-Ming Chen, Nai-Lung Tsao and David Wible. 2013. A Corpus-Based Tool for Exploring Domain-Specific Collocations in English. PACLIC 27 Workshop on Computer-Assisted Language Learning.

The paper itself, not this page. BibTeX from the library's record of the work.

@inproceedings{huang2013corpus,
  title = {{A Corpus-Based Tool for Exploring Domain-Specific Collocations in English}},
  author = {Ping-Yu Huang, Chien-Ming Chen, Nai-Lung Tsao and David Wible},
  booktitle = {PACLIC 27 Workshop on Computer-Assisted Language Learning},
  year = {2013},
  url = {https://aclanthology.org/Y13-2005/}
}

References

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