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- Alfter, David,1986Gothenburg University,Göteborgs universitet,Institutionen för svenska språket,Department of Swedish (author)
Exploring natural language processing for single-word and multi-word lexical complexity from a second language learner perspective
- BookEnglish2021
Publisher, publication year, extent ...
- Göteborgs universitet,2021
Numbers
- LIBRIS-ID:oai:gup.ub.gu.se/304548
- ISBN:9789187850790
- 2077/66861hdl
- https://gup.ub.gu.se/publication/304548URI
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- Language:English
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- SwePubSwePub
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Series
- Data linguistica,0347-948X
Notes
- In this thesis, we investigate how natural language processing (NLP) tools and techniques can be applied to vocabulary aimed at second language learners of Swedish in order to classify vocabulary items into different proficiency levels suitable for learners of different levels. In the first part, we use feature-engineering to represent words as vectors and feed these vectors into machine learning algorithms in order to (1) learn CEFR labels from the input data and (2) predict the CEFR level of unseen words. Our experiments corroborate the finding that feature-based classification models using 'traditional' machine learning still outperform deep learning architectures in the task of deciding how complex a word is. In the second part, we use crowdsourcing as a technique to generate ranked lists of multi-word expressions using both experts and non-experts (i.e. language learners). Our experiment shows that non-expert and expert rankings are highly correlated, suggesting that non-expert intuition can be seen as on-par with expert knowledge, at least in the chosen experimental configuration. The main practical output of this research comes in two forms: prototypes and resources. We have implemented various prototype applications for (1) the automatic prediction of words based on the feature-engineering machine learning method, (2) language learning applications using graded word lists, and (3) an annotation tool for the manual annotation of expressions across a variety of linguistic factors.
Subject headings and genre
- NATURVETENSKAP Data- och informationsvetenskap Språkteknologi hsv//swe
- NATURAL SCIENCES Computer and Information Sciences Language Technology hsv//eng
- HUMANIORA Språk och litteratur Jämförande språkvetenskap och allmän lingvistik hsv//swe
- HUMANITIES Languages and Literature General Language Studies and Linguistics hsv//eng
- natural language processing
- lexical complexity
- CEFR
- second language learning
- machine learning
- crowdsourcing
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- Göteborgs universitetInstitutionen för svenska språket (creator_code:org_t)
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