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inference on linear combinations of regression parameters introduced. Also made small improvements to fasten computation of (Bii,Pii).
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function [list_final,nnz_2] = check_clustering(clustering_var) | ||
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NT=length(clustering_var); | ||
index=(1:NT)'; | ||
[~,~,clustering_var]=unique(clustering_var); | ||
[~,IX]=sort(clustering_var); | ||
clustering_var=clustering_var(IX); | ||
index=index(IX); | ||
count=ones(NT,1); | ||
gcs = cell2mat(accumarray(clustering_var,count,[],@(x){cumsum(x)})); | ||
maxD=max(gcs); | ||
list_final=[]; | ||
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for t=1:maxD | ||
list_base=[clustering_var(gcs==t) index(gcs==t)]; | ||
LIST_BASE = array2table(list_base,... | ||
'VariableNames',{'id_cluster','row_count'}); | ||
for tt=1:maxD | ||
list_aux=[clustering_var(gcs==tt) index(gcs==tt)]; | ||
LIST_SEL = array2table(list_aux,... | ||
'VariableNames',{'id_cluster','column_count'}); | ||
merge=outerjoin(LIST_BASE,LIST_SEL); | ||
merge = table2array(merge); | ||
merge=merge(~any(isnan(merge),2),:); | ||
merge=[merge(:,2) merge(:,4) merge(:,2)]; %row, col | ||
list_final=[list_final;merge]; | ||
end | ||
end | ||
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nnz_2=size(list_final,1); | ||
end | ||
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function Lambda_P = do_Pii(X,clustering_var) | ||
n=size(X,1); | ||
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%If no clustering, Lambda_P is just diagonal matrix. | ||
if isempty(clustering_var) | ||
clustering_var = (1:n)'; | ||
end | ||
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%Set matrices for parallel environment. | ||
xx=X'*X; | ||
xx_c = parallel.pool.Constant(xx); | ||
X_c = parallel.pool.Constant(X); | ||
Lchol=ichol(xx,struct('type','ict','droptol',1e-2,'diagcomp',.1)); | ||
Chol_c = parallel.pool.Constant(Lchol); | ||
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%Options for the solver. | ||
numIterations = 300; %iteration for the pcg solver | ||
tol=1e-6; %tol for pcg | ||
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%Return the structure of the indexes associated with the clustering variable | ||
elist = check_clustering(clustering_var); | ||
M=size(elist,1); | ||
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%Set elist in parallel environment. | ||
elist_1=parallel.pool.Constant(elist(:,1)); | ||
elist_2=parallel.pool.Constant(elist(:,2)); | ||
Pii=zeros(M,1); | ||
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parfor i=1:M | ||
[xtilde, flag]= pcg(xx_c.Value,X_c.Value(elist_2.Value(i),:)',tol,numIterations,Chol_c.Value,Chol_c.Value'); | ||
Pii(i)=X_c.Value(elist_2.Value(i),:)*xtilde; | ||
end | ||
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Lambda_P=sparse(elist(:,1),elist(:,2),Pii,n,n); | ||
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end | ||
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