PoS-tagging the Web in Portuguese. National varieties, text typologies and spelling systems

TítuloPoS-tagging the Web in Portuguese. National varieties, text typologies and spelling systems
AutoresMarcos Garcia, Pablo Gamallo, Iria Gayo, Miguel Anxo Pousada Cruz
TipoArtículo de revista
Fonte Procesamiento del Lenguaje Natural, Sociedad Española para el Procesamiento del Lenguaje Natural , No. 53, pp. 95-101 , 2014.
ISSN1135-5948
AbstractThe great amount of text produced every day in the Web turned it as one of the main sources for obtaining linguistic corpora, that are further analyzed with Natural Language Processing techniques. On a global scale, languages such as Portuguese —official in 9 countries— appear on the Web in several varieties, with lexical, morphological and syntactic (among others) differences. Besides, a unified spelling system for Portuguese has been recently approved, and its implementation process has already started in some countries. However, it will last several years, so different varieties and spelling systems coexist. Since PoS-taggers for Portuguese are specifically built for a particular variety, this work analyzes different training corpora and lexica combinations aimed at building a model with high-precision annotation in several varieties and spelling systems of this language. Moreover, this paper presents different dictionaries of the new orthography (Spelling Agreement) as well as a new freely available testing corpus, containing different varieties and textual typologies.
Palabras chavePoS-tagging, Portuguese, Web as Corpus, Spelling Agreement