Alok Aggarwal, Don Coppersmith, et al.
SIAM Journal on Computing
A new algorithm for computing Hadamard transforms is presented. If n is a power of four, then the new algorithm uses ⅞ n logn multiply/adds to compute a Hadamard transform of length n. © 1994 IEEE
Alok Aggarwal, Don Coppersmith, et al.
SIAM Journal on Computing
Ephraim Feig, Shmuel Winograd
IEEE TSP
Don Coppersmith
IEEE Trans. Inf. Theory
Don Coppersmith, Shmuel Winograd
Journal of Symbolic Computation