Constraints on the Neighborhood Size in LLE. - Zhengming Ma; Jing Chen; Shuaibin Lian (IEICE Trans. Inf. Syst., 2011)

An improved HLLE algorithm based on the midpoint-nearest neighborhood selection. - Sumin Zhang; Qiuli Kong; Shuaibin Lian; Zhengming Ma (ICAL, 2012)