An efficient sparse metric learning in high-dimensional space via l1-penalized log-determinant regularization.

Guo-Jun Qi Jinhui Tang Zheng-Jun Zha Tat-Seng Chua Hong-Jiang Zhang An efficient sparse metric learning in high-dimensional space via l1-penalized log-determinant regularization. 106 2009 ICML http://doi.acm.org/10.1145/1553374.1553482 conf/icml/2009 db/conf/icml/icml2009.html#QiTZCZ09