Title
Analysing the Role of Representation Choices in Portuguese Relation Extraction
Abstract
Relation Extraction is the task of identifying and classifying the semantic relations between entities in text. This task is one of the main challenges in Natural Language Processing. In this work, the relation extraction task is treated as sequence labelling problem. We analysed the impact of different representation schemes for the relation descriptors. In particular, we analysed the BIO and IO schemes performance considering a Conditional Random Fields classifier for the extraction of any relation descriptor occurring between named entities in the Organisation domain Person, Organisation, Place. Overall, the classifier proposed here presents the best results using the IO notation.
Year
DOI
Venue
2015
10.1007/978-3-319-24027-5_9
Cross-Language Evaluation Forum
Keywords
Field
DocType
Natural Language Processing,Information Extraction,Relation extraction,Organisation domain,Portuguese language
Conditional random field,Notation,Information retrieval,Computer science,Portuguese,Information extraction,Natural language processing,Artificial intelligence,Classifier (linguistics),Relationship extraction
Conference
Volume
ISSN
Citations 
9283
0302-9743
3
PageRank 
References 
Authors
0.44
13
3
Name
Order
Citations
PageRank
Sandra Collovini1145.45
Marcelo de Bairros P. Filho230.44
Renata Vieira39227.89