@article{JMLR:v6:bar-hillel05a,
  author  = {Aharon Bar-Hillel and Tomer Hertz and Noam Shental and Daphna Weinshall},
  title   = {Learning a Mahalanobis Metric from Equivalence Constraints},
  journal = {Journal of Machine Learning Research},
  year    = {2005},
  volume  = {6},
  number  = {32},
  pages   = {937--965},
  url     = {http://jmlr.org/papers/v6/bar-hillel05a.html}
}