代码搜索：Definite
找到约 349 项符合「Definite」的源代码
代码结果 349
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m alg066.m
% CHOLESKI'S ALGORITHM 6.6
%
% To factor the positive definite n by n matrix A into LL**T,
% where L is lower triangular.
%
% INPUT: the dimension n; entries A(I,J), 1
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m randpds.m
function [C]=randpds(dim,diagm)
% [C]=randpds(dim,diagm)
%
% RANDPDS generates random positive definite symetric matrix of
% given dimension.
%
% Input:
% dim [1x1] given dimension of desired matri
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m logdet.m
function y = logdet(A)
% log(det(A)) where A is positive-definite.
% This is faster and more stable than using log(det(A)).
% From Tom Minka's lightspeed toolbox
U = chol(A);
y = 2*sum(log(d
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m randpds.m
function [C]=randpds(dim,diagm)
% [C]=randpds(dim,diagm)
%
% RANDPDS generates random positive definite symetric matrix of
% given dimension.
%
% Input:
% dim [1x1] given dimension of desired matri
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m randpds.m
function [C]=randpds(dim,diagm)
% [C]=randpds(dim,diagm)
%
% RANDPDS generates random positive definite symetric matrix of
% given dimension.
%
% Input:
% dim [1x1] given dimension of desired matri
www.eeworm.com/read/367442/9747798
m randpds.m
function [C]=randpds(dim,diagm)
% [C]=randpds(dim,diagm)
%
% RANDPDS generates random positive definite symetric matrix of
% given dimension.
%
% Input:
% dim [1x1] given dimension of desired matri
www.eeworm.com/read/449130/7517950
m tridiag_ldlt.m
function [d, e, iflag] = tridiag_ldlt( d, e);
%
% TRIDIAG_LDLT computes the LDL^T-decomposition of a
% symmetric positive definite tridiagonal matrix.
%
% Usage
% [c, d, e, iflag] = tridiag_
www.eeworm.com/read/250980/12372024
m inv_posdef.m
function Pinv = inv_posdef(P)
%function Pinv = inv_posdef(P)
%
% Invert a positive definite matrix P. More numerically stable than Pinv = inv(P)
% and result is guaranteed to remain symmetric.
%
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html 16.doc.html
The Java Language Specification
Definite Assignment
Cont
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m mchol.m
%
% [L,D,E,pneg]=mchol(G)
%
% Given a symmetric matrix G, find a matrix E of "small" norm and
% L, and D such that G+E is Positive Definite, and
%
% G+E = L*D*L'
%
% Also, calculate a dire