matlab 工具函数 —— logdet(A) 当参数A是正定矩阵(positive definite)时,logdet 利用相关矩阵分解的性质,将比 log(det(A)) 获得更快的效率: functiony=logdet(A)tryU = chol(A); y =2*sum(log(diag(U))) ;catchy =0; warning('logdet:postdef','Matrix is not positive definite');endend...
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matlab 保存大于2GB数据 2019-12-24 21:33 −一般的笔记本,在mat数据大于2GB的时候,通常不能直接保存,报错如下: Save operation failed. this variable cannot be saved to a MAT-file whose version is older than 7.3,because it is t... zhshining ...
A是正定矩阵(positive definite)时,logdet 利用相关矩阵分解的性质,将比 log(det(A)) 获得更快的效率: function y = logdet(A) try U = chol(A); y = 2*sum(log(diag(U))) ; catch y = 0; warning('logdet:postdef', 'Matrix is not positive definite'); end end 1. 2. 3. 4. 5. ...
<2025年2月> 日一二三四五六 2627282930311 2345678 9101112131415 16171819202122 2324252627281 2345678 随笔档案 当参数A是正定矩阵(positive definite)时,logdet 利用相关矩阵分解的性质,将比 log(det(A)) 获得更快的效率: functiony=logdet(A)tryU = chol(A); y =2*sum(log(diag(U))) ;catchy =0; warn...