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tt_qreshape

PURPOSE ^

Reshapes the cores of the input (Q)TT representation.

SYNOPSIS ^

function [tt]=tt_qreshape(tt,s,sz)

DESCRIPTION ^

 Reshapes the cores of the input (Q)TT representation.
 s (scalar) is the number of mode indices in each core of the input representation;
 sz is a matrix of size d x s1, where d is the number of cores and s1 is the number of mode indices in each core of the output representation;
 sz(k,alpha) is the mode size of the alpha-th index in the k-th core of the output representation.
 k-th component of prod(sz,2) is the overall numbers of mode degrees of freedom of the k-th core of the output representation 

 April 26, 2011
 Vladimir Kazeev
 vladimir.kazeev@gmail.com
 INM RAS
 Moscow, Russia

CROSS-REFERENCE INFORMATION ^

This function calls: This function is called by:

SOURCE CODE ^

0001 function [tt]=tt_qreshape(tt,s,sz)
0002 
0003 % Reshapes the cores of the input (Q)TT representation.
0004 % s (scalar) is the number of mode indices in each core of the input representation;
0005 % sz is a matrix of size d x s1, where d is the number of cores and s1 is the number of mode indices in each core of the output representation;
0006 % sz(k,alpha) is the mode size of the alpha-th index in the k-th core of the output representation.
0007 % k-th component of prod(sz,2) is the overall numbers of mode degrees of freedom of the k-th core of the output representation
0008 %
0009 % April 26, 2011
0010 % Vladimir Kazeev
0011 % vladimir.kazeev@gmail.com
0012 % INM RAS
0013 % Moscow, Russia
0014 %
0015 
0016 d=size(tt,1);
0017 for k=1:d
0018     szk=size(tt{k});
0019     szk=[szk,ones(1,s)];
0020     szkr=szk(s+1:numel(szk));
0021     tt{k}=reshape(tt{k},[sz(k,:),szkr]);
0022 end
0023 
0024 return
0025 end

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