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Feature Extration and Classification

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CLAVIS is an automatic feature extraction and text classification system for European Portuguese. It seeks to assist the selection of adequate reading materials for teaching European Portuguese, especially as a second language. The system adopts the official classification presented by Framework for Teaching Portuguese Abroad, QUAREPE, with five-levels scale (A1, A2, B1, B2, and C1), while still allowing the use of a simplified 3-level scale (A, B, C).
CLAVIS uses lexical and syntactic information produced by the natural language processing chain STRING, as well as the hyphenator YAH developed by L2F-INESC-ID Lisboa. The CLAVIS was developed as part of a dissertation in Information Systems and Computer Engineering by Pedro Curto (2014). To quote, use the reference below:
Curto, P.: Classificador de textos para o ensino de português como segunda língua. Master’s thesis, Instituto Superior Técnico - Universidade de Lisboa, Lisboa (2014) bibtex.


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