A neural network approach to ordinal regression.

Jianlin Cheng Zheng Wang Gianluca Pollastri A neural network approach to ordinal regression. 1279-1284 2008 IJCNN http://dx.doi.org/10.1109/IJCNN.2008.4633963 conf/ijcnn/2008 db/conf/ijcnn/ijcnn2008.html#ChengWP08