Difference between revisions of "Ttclass/hdot.m"
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Hadamard matrix product. Useful as a replacement for trace(A'*B) because trace(A'*B)=hadm(conj(A),B) and the latter only needs O(n^2) multiplications as opposed to O(n^3) for trace(A'*B). Syntax: | Hadamard matrix product. Useful as a replacement for trace(A'*B) because trace(A'*B)=hadm(conj(A),B) and the latter only needs O(n^2) multiplications as opposed to O(n^3) for trace(A'*B). Syntax: | ||
| − | + | ||
| + | c=hdot(a,b) | ||
This function is also available for tensor train representations of matrices. | This function is also available for tensor train representations of matrices. | ||
Revision as of 15:04, 5 April 2026
Hadamard matrix product. Useful as a replacement for trace(A'*B) because trace(A'*B)=hadm(conj(A),B) and the latter only needs O(n^2) multiplications as opposed to O(n^3) for trace(A'*B). Syntax:
c=hdot(a,b)
This function is also available for tensor train representations of matrices.
