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Documents authored by Ginsca, Alexandru Lucian

Fine-Grained Opinion Mining as a Relation Classification Problem

Authors: Alexandru Lucian Ginsca

Published in: OASIcs, Volume 28, 2012 Imperial College Computing Student Workshop

The main focus of this paper is to investigate methods for opinion extraction at a more detailed level of granularity, retrieving not only the opinionated portion of text, but also the target of that expressed opinion. We describe a novel approach to fine-grained opinion mining that, after an initial lexicon based processing step, treats the problem of finding the opinion expressed towards an entity as a relation classification task. We detail a classification workflow that combines the initial lexicon based module with a broader classification part that involves two different models, one for relation classification and the other for sentiment polarity shift identification. We provided detailed descriptions of a series of classification experiments in which we use an original proximity based bag-of-words model. We also introduce a new use of syntactic features used together with a tree kernel for both the relation and sentiment polarity shift classification tasks.

Cite as

Alexandru Lucian Ginsca. Fine-Grained Opinion Mining as a Relation Classification Problem. In 2012 Imperial College Computing Student Workshop. Open Access Series in Informatics (OASIcs), Volume 28, pp. 56-61, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2012)

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  author =	{Ginsca, Alexandru Lucian},
  title =	{{Fine-Grained Opinion Mining as a Relation Classification Problem}},
  booktitle =	{2012 Imperial College Computing Student Workshop},
  pages =	{56--61},
  series =	{Open Access Series in Informatics (OASIcs)},
  ISBN =	{978-3-939897-48-4},
  ISSN =	{2190-6807},
  year =	{2012},
  volume =	{28},
  editor =	{Jones, Andrew V.},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{},
  URN =		{urn:nbn:de:0030-drops-37653},
  doi =		{10.4230/OASIcs.ICCSW.2012.56},
  annote =	{Keywords: Opinion Mining, Opinion Target Identification, Syntactic Features}
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