Chao Shao Houkuan Huang Chunhong Wan Selection of the Suitable Neighborhood Size for the ISOMAP Algorithm. 300-305 2007 IJCNN http://dx.doi.org/10.1109/IJCNN.2007.4370972 conf/ijcnn/2007 db/conf/ijcnn/ijcnn2007.html#ShaoHW07