@ARTICLE{SunJasist11Tag,
  author = {Sun, Aixin and Bhowmick, Sourav S. and Nguyen, Khanh Tran Nam and
	Bai, Ge},
  title = {Tag-Based Social Image Retrieval: An Empirical Evaluation},
  journal = {Journal of the American Society for Information Science and Technology
	({JASIST})},
  year = {2011},
   volume={62},
  number={12},
  pages={2364--2381},
  publisher = {John Wiley \& Sons, Inc.}
}