Title
Portuguese Corpus-Based Learning Using ETL
Abstract
We present Entropy Guided Transformation Learning models for three Portuguese Language Processing tasks: Part-of-Speech Tagging, Noun Phrase Chunking and Named Entity Recognition. For Part-of-Speech Tagging, we separately use the Mac-Morpho Corpus and the Tycho Brahe Corpus. For Noun Phrase Chunking, we use the SNR-CLIC Corpus. For Named Entity Recognition, we separately use three corpora: HAREM, MiniHAREM and LearnNEC06. For each one of the tasks, the ETL modeling phase is quick and simple. ETL only requires the training set and no handcrafted templates. ETL also simplifies the incorporation of new input features, such as capitalization information, which are sucessfully used in the ETL based systems. Using the ETL approach, we obtain state-of-the-art competitive performance in all six corpora-based tasks. These results indicate that ETL is a suitable approach for the construction of Portuguese corpus-based systems.
Year
DOI
Venue
2008
10.1590/S0104-65002008000400003
Journal of the Brazilian Computer Society
Keywords
Field
DocType
Entropy Guided Transformation Learning,transformation-based learning,decision trees natural,language processing
Noun phrase,Training set,Data structure,Computer science,Portuguese,Artificial intelligence,Natural language processing,Chunking (psychology),Learning models,Transformation based learning,Named-entity recognition
Journal
Volume
Issue
ISSN
14
4
1678-4804
Citations 
PageRank 
References 
4
0.48
19
Authors
3
Name
Order
Citations
PageRank
Ruy Luiz Milidiú119220.18
Cícero Nogueira dos Santos277137.83
Julio C. Duarte3262.46