Título: | TRANSITIONBASED DEPENDENCY PARSING APPLIED ON UNIVERSAL DEPENDENCIES | ||||||||||||
Autor: |
CESAR DE SOUZA BOUCAS |
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Colaborador(es): |
RUY LUIZ MILIDIU - Orientador |
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Catalogação: | 11/FEV/2019 | Língua(s): | PORTUGUESE - BRAZIL |
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Tipo: | TEXT | Subtipo: | THESIS | ||||||||||
Notas: |
[pt] Todos os dados constantes dos documentos são de inteira responsabilidade de seus autores. Os dados utilizados nas descrições dos documentos estão em conformidade com os sistemas da administração da PUC-Rio. [en] All data contained in the documents are the sole responsibility of the authors. The data used in the descriptions of the documents are in conformity with the systems of the administration of PUC-Rio. |
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Referência(s): |
[pt] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=36740&idi=1 [en] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=36740&idi=2 |
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DOI: | https://doi.org/10.17771/PUCRio.acad.36740 | ||||||||||||
Resumo: | |||||||||||||
Dependency parsing is the task that transforms a sentence into a
syntactic structure, usually a dependency tree, that represents relations
between words. This representations are useful to deal with several tasks
that arises with the increasing volume of textual online information and
the need for technologies that depends on NLP tasks to work. It can be
used, for example, to enable computers to infer the meaning of words
of multiple natural languages. This paper presents dependency parsing
with focus on one of its most popular modeling in machine learning: the
transition-based method. A greedy implementation of this model with
a simple neural network-based classifier is used to perform experiments.
Universal Dependencies treebanks are used to train and then test the system
using the validation script published in the CoNLL-2017 shared task. The
results empirically indicate the benefits of initializing the input layer of the
network with word embeddings obtained through pre-training. It reached
84.51 LAS in the Portuguese of Brazil test set and 75.19 LAS in the English
test set. This result is nearly 4 points behind the performance of the best
results of transition-based parsers.
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