[IEEE 2008 Third International Conference on Pervasive Computing and Applications (ICPCA) - Alexandria, Egypt (2008.10.6-2008.10.8)] 2008 Third International Conference on Pervasive Computing and Applications - A Topological Structure Construction Approach and its Application in Off-line Handwritten Digit RecognitionDuan, Huichuan; Yang, Jinwei; Liu, Xiyu; Liu, Hong · 2008