Semisupervised Tangent Space Discriminant Analysis

Algorithm 1

STSD.

Input: Labeled and unlabeled examples

, ;

Trade-off parameters ().

Output:   transformation matrix .

Construct the adjacency graph;

Calculate the weight matrix ;

for    to    do

 Construct using local PCA;

end for

Compute the eigenvectors of (20) with respect to the non-zero

eigenvalues;

.