Zixun Xiong, Minghua Wan, Rui Xue, Guowei Yang, Vol. 16, No. 9, September 30, 2022
10.3837/tiis.2022.09.009

• feature extraction
• Discriminant Analysis
• Matrix exponential
• Small sample size (SSS) problems
• Two dimensional locality preserving projections (2D-LPP)