Yanxin Shi Mengqiu Wang A Dual-layer CRFs Based Joint Decoding Method for Cascaded Segmentation and Labeling Tasks. 1707-1712 2007 conf/ijcai/2007 IJCAI http://dli.iiit.ac.in/ijcai/IJCAI-2007/PDF/IJCAI07-276.pdf db/conf/ijcai/ijcai2007.html#ShiW07