backward difference operator
central difference operator
finite difference operator
Fitting method difference operator
inverse difference operator
Optimum Difference Operator
difference in difference
difference in difference (DD) method
Difference-in-difference
2 dimensional discrete wavelet transform
2D discrete cosine transform
2-D discrete Hurwitz polynomials
2D discrete time system
2D discrete wavelet transform
2-D discrete wavelet transform
2-D discrete wavelet transforms (DWT)
2-dimensional discrete static wavelet
3D deformable discrete element method