@InProceedings{kim-song-rim:2016:COLINGDEMO,
  author    = {Kim, Yoon-Sung  and  Song, Young-In  and  Rim, Hae-Chang},
  title     = {Opinion Retrieval Systems using Tweet-external Factors},
  booktitle = {Proceedings of COLING 2016, the 26th International Conference on Computational Linguistics: System Demonstrations},
  month     = {December},
  year      = {2016},
  address   = {Osaka, Japan},
  publisher = {The COLING 2016 Organizing Committee},
  pages     = {126--130},
  abstract  = {Opinion mining is a natural language processing technique which extracts
	subjective information from natural language text. To estimate an opinion about
	a query in large data collection, an opinion retrieval system that retrieves
	subjective and relevant information about the query can be useful. We present
	an opinion retrieval system that retrieves subjective and query-relevant tweets
	from Twitter, which is a useful source of obtaining real-time opinions. Our
	system outperforms previous opinion retrieval systems, and it further provides
	subjective information about Twitter authors and hashtags to describe their
	subjective tendencies.},
  url       = {http://aclweb.org/anthology/C16-2027}
}