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Gunnar_Zarncke comments on [Link] An exact mapping between the Variational Renormalization Group and Deep Learning] - Less Wrong Discussion

5 Post author: Gunnar_Zarncke 08 December 2014 02:33PM

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Comment author: Gunnar_Zarncke 08 December 2014 09:31:59PM 0 points [-]

The idea behind RG is to find a new coarse-grained description of the spin system where one has “integrated out” short distance fluctuations.

Physics has lots of structure that is local. 'Averaging' over local structures can reveal higher level structures. On rereading I realized that the critical choice remains in the the way the RG is constructed. So the approach isn't as general as I initially imagined it to be.

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