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: AI检测代码解析 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. ...
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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 ...
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(neg_u_entries) 0042 diagU(neg_u_entries) = -diagU(neg_u_entries); 0043 end 0044 0045 % log-product 0046 wid = 'MATLAB:log:logOfZero'; 0047 st = warning('query', wid); 0048 st = st.state; 0049 0050 warning('off', wid); 0051 r = sum(log(diagU)); 0052 warning(st, ...
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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: function y = logdet(A) try U = chol(A); y = 2*sum(log(diag(U))) ; catch y = 0; warning('logdet:postdef', 'Matrix is not positive ...
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A collection of MATLAB scripts. Contribute to jluttine/matlab development by creating an account on GitHub.