Yangjing Long. Human Age Estimation by Metric Learning for Regression Problems. In Xiaoyi Jiang, Nicolai Petkov, editors, Computer Analysis of Images and Patterns, 13th International Conference, CAIP 2009, Münster, Germany, September 2-4, 2009. Proceedings. Volume 5702 of Lecture Notes in Computer Science, pages 74-82, Springer, 2009. [doi]