@inproceedings { xu12icdm,
author = {Z. Xu and K. Kersting and C. Bauckhage},
title = {Efficiently Learning to Hash Proportional Data},
year = {2012},
booktitle = {In Proceedings of the IEEE Conference on Data 
Mining (ICDM{--}2012)},
month = {December 10 {--} 13, 2012},
address = {Brussels, Belgium}
}