Difference between revisions of "Keep rank.m"
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{{DISPLAYTITLE:keep_rank.m}} __NOTOC__ | {{DISPLAYTITLE:keep_rank.m}} __NOTOC__ | ||
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Truncates the singular value decomposition at the specified rank and reassembles the matrix. | Truncates the singular value decomposition at the specified rank and reassembles the matrix. | ||
==Syntax== | ==Syntax== | ||
| − | A=keep_rank(A, | + | A=keep_rank(A,rank) |
==Arguments== | ==Arguments== | ||
| − | A - real or complex matrix, will be | + | A - real or complex matrix, will be |
converted to full if a sparse | converted to full if a sparse | ||
matrix is received | matrix is received | ||
| − | + | ||
| − | + | rank - number of singular values to keep | |
==Outputs== | ==Outputs== | ||
| − | A - filtered matrix, returned as full | + | A - filtered matrix, returned as full |
==See also== | ==See also== | ||
| − | |||
[[Kernel_utilities#Numerical_infrastructure|Numerical infrastructure]], [[frob_chop.m]], [[ttclass/shrink.m]] | [[Kernel_utilities#Numerical_infrastructure|Numerical infrastructure]], [[frob_chop.m]], [[ttclass/shrink.m]] | ||
''Version 2.5, authors: [[Ilya Kuprov]]'' | ''Version 2.5, authors: [[Ilya Kuprov]]'' | ||
Revision as of 15:49, 5 April 2026
Truncates the singular value decomposition at the specified rank and reassembles the matrix.
Syntax
A=keep_rank(A,rank)
Arguments
A - real or complex matrix, will be
converted to full if a sparse
matrix is received
rank - number of singular values to keep
Outputs
A - filtered matrix, returned as full
See also
Numerical infrastructure, frob_chop.m, ttclass/shrink.m
Version 2.5, authors: Ilya Kuprov
