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- function [iS] = spm_LAP_iS(p,R)
- % default precision function for LAP models (hidden states)
- % FORMAT [iS] = spm_LAP_iS(p,R)
- %
- % p{1} - vector of precisions for causal states (v)
- % p{2} - vector of precisions for hidden states (v)
- % R - generalised precision matrix
- %
- % iS - precision matrix for generalised states (causal and then hidden)
- %__________________________________________________________________________
- % Copyright (C) 2008 Wellcome Trust Centre for Neuroimaging
-
- % Karl Friston
- % $Id: spm_LAP_iS.m 3694 2010-01-22 14:16:51Z karl $
-
- % precisions for generalised errors on causal (V) and hidden states (W)
- %==========================================================================
- V = kron(R,diag(exp(p.h)));
- W = kron(R,diag(exp(p.g)));
- iS = blkdiag(V,W);
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