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【求助】奇異值分解程序(SVD分解程序) 已有10人參與
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重金求一奇異值分解源程序(SVD分解程序),C語言編的源程序,不是MATLAB的SVD調用程序,謝謝大家的參與 [ Last edited by wwwyasu on 2010-5-13 at 20:41 ] |
木蟲 (著名寫手)
至尊木蟲 (職業(yè)作家)
銀蟲 (小有名氣)
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奇異值分解,在matlab里面一個語句就實現(xiàn)了。 SVD Singular value decomposition. [U,S,V] = SVD(X) produces a diagonal matrix S, of the same dimension as X and with nonnegative diagonal elements in decreasing order, and unitary matrices U and V so that X = U*S*V'. S = SVD(X) returns a vector containing the singular values. [U,S,V] = SVD(X,0) produces the "economy size" decomposition. If X is m-by-n with m > n, then only the first n columns of U are computed and S is n-by-n. For m <= n, SVD(X,0) is equivalent to SVD(X). [U,S,V] = SVD(X,'econ') also produces the "economy size" decomposition. If X is m-by-n with m >= n, then it is equivalent to SVD(X,0). For m < n, only the first m columns of V are computed and S is m-by-m. See also svds, gsvd. Overloaded functions or methods (ones with the same name in other directories) help sym/svd.m help frd/svd.m Reference page in Help browser doc svd |
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