k(x i , x j ) | Diffusion kernel values | approximate functions | |||
---|---|---|---|---|---|
 | x1 | x2 | ... | x m |  |
x 1 | k(x1, x1) | k(x1, x2) | ... | k(x1, x m ) | f1(x1, xj) |
x 2 | k(x2, x1) | k(x2, x2) | Â | k(x2, x m ) | f2(x2, xj) |
... | ... | ... | ... | ... | ... |
x m | k(x m , x1) | k(x m , x2) | Â | k(x m , x m ) | f m (x m , xj) |