@InProceedings{si-liu-sun:2010:PAPERS,
  author    = {Si, Xiance  and  Liu, Zhiyuan  and  Sun, Maosong},
  title     = {Explore the Structure of Social Tags by Subsumption Relations},
  booktitle = {Proceedings of the 23rd International Conference on Computational Linguistics (Coling 2010)},
  month     = {August},
  year      = {2010},
  address   = {Beijing, China},
  publisher = {Coling 2010 Organizing Committee},
  pages     = {1011--1019},
  url       = {http://www.aclweb.org/anthology/C10-1114}
}