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what if using sampling when cut edge in svd? #29

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hzhangxyz opened this issue Nov 21, 2022 · 0 comments
Open

what if using sampling when cut edge in svd? #29

hzhangxyz opened this issue Nov 21, 2022 · 0 comments
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TAT.hpp

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@hzhangxyz
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when try to cut edge in svd, do not sort singular values from larger to less, sampling it based on singular value instead, which may solve local minimum for blocked tensor.
hzhangxyz added a commit that referenced this issue Nov 29, 2022
@hzhangxyz
[TAT.hpp] Add svd cut method: boltzmann cut. (#29)
7ba647b 
Which use a "temperature" to cut dimension, if temperature=0, it equals to
remain cut. In higher temperature, it has more possibility to choose a smaller
singular value, This may be useful for blocked tensor, which erasing a symmetry
may be much more harmful than cutting a larger singular. Inside a single block,
smaller singular is always cutted earlier than larger one, so this commit does
not affect no symmetry tensor.
@hzhangxyz hzhangxyz moved this from Todo to In Progress in TAT project Nov 29, 2022
hzhangxyz added a commit that referenced this issue Jan 2, 2023
@hzhangxyz
[TAT.hpp] Add svd cut method: boltzmann cut. (#29)
5e71a57 
Which use a "temperature" to cut dimension, if temperature=0, it equals to
remain cut. In higher temperature, it has more possibility to choose a smaller
singular value, This may be useful for blocked tensor, which erasing a symmetry
may be much more harmful than cutting a larger singular. Inside a single block,
smaller singular is always cutted earlier than larger one, so this commit does
not affect no symmetry tensor.
@hzhangxyz hzhangxyz moved this to In Progress in TAT project Feb 7, 2023
@hzhangxyz hzhangxyz moved this from In Progress to Todo in TAT project Feb 28, 2023
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dev-hzhangxyz/sampling-svd-cut USTC-TNS/TNSP
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