資源簡介
BGLL算法的matlab實現,經典的社團檢測算法

代碼片段和文件信息
%?Iplementation?:?Antoine?Scherrer
%?antoine.scherrer@ens-lyon.fr
%?Apply?clustering?after?:
%?“Fast?unfolding?of?community?hierarchies?in?large?networks“
%?Vincent?D.?Blondel?Jean-Loup?Guillaume?Renaud?Lambiotte
%?Etienne?Lefebvre
%?http://arxiv.org/abs/0803.0476
%
%?NON?ORIENTED?VERSION?USING?SYMETRIC?MATRIX?A?=?M?+?M^t?INSTEAD?OF?
%?(POSSIBLY?NON?SYMETRIC)?INPUT?MATRIX?M
%
%?FULL?MATLAB?VERSION?(SLOWER)
%
%?Inputs?:?
%?M?:?weight?matrix?(the?matrix?is?symetrized?with
%?the?sum?of?weights?in?both?directions)
%?s?:?1?=?Recursive?computation
%???:?0?=?Just?one?level?computation
%?self?:?1?=?Use?self?weights
%????????0?=?Do?not?use?self?weights
%?debug???:?1?=?outputs?some?debug?messages
%?verbose?:?1?=?outputs?some?messages
%
%?Output?:
%?COMTY?structure?with?the?following?information
%?for?each?level?i?:
%???COMTY.COM{i}?:?vector?of?community?IDs?(sorted?by?community?sizes)
%???COMTY.SIZE{i}?:?vector?of?community?sizes
%???COMTY.MOD(i)?:?modularity?of?clustering
%???COMTY.Niter(i)?:?Number?of?iteration?before?convergence
%
function?[COMTY?ending]?=?cluster_jl(Msselfdebugverbose)
if?nargin?1
??error(‘not?enough?argument‘);
end
if?nargin?2
??s?=?1;
end
if?nargin?3
??self?=?1;
end
if?nargin?4
??debug?=?0;
end
if?nargin?5
??verbose?=?0;
end
S?=?size(M);
N?=?S(1);
ddebug?=?0;
ending?=?0;
%?Symetrize?matrix?taking?the?sum?of?weights
M?=?M?+?M‘;
if?(self?==?0)
??M((N+1).*[0:N-1]+1)?=?0;
end
M2?=?M;
M2((N+1).*[0:N-1]+1)?=?0;
m?=?sum(sum(M));
Niter?=?1;
if?m==0?|?N?==?1
??fprintf(‘No?more?possible?decomposition\n‘);
??ending?=?1;
??COMTY?=?0;
??return;
end
%?Main?loop
K?=?sum(M);?%?Sum?of?wieght?incident?to?node?i
SumTot?=?sum(M);
SumIn?=?diag(M);?%?Sum?of?weight?inside?community?i
COM?=?1:S(1);?%?Community?of?node?i
for?k=1:N
??Neighbor{k}?=?find(M2(k:));
end
sCost?=?10;
gain?=?1;
while?(gain?==?1)
??Cost?=?zeros(1N);
??gain?=?0;
??for?i=1:N
????Ci?=?COM(i);
????NB?=?Neighbor{i};
????G?=?zeros(1N);?%?Gain?vector
????best_increase?=?-1;
????Cnew?=?Ci;
????COM(i)?=?-1;
????SumTot(Ci)?=?SumTot(Ci)?-?K(i);
????CNj1?=?find(COM==Ci);
????SumIn(Ci)?=?SumIn(Ci)?-?2*sum(M(iCNj1))?-?M(ii);
????for?j=1:length(NB)
??????Cj?=?COM(NB(j));
??????if?(G(Cj)?==?0)
????????CNj?=?find(COM==Cj);
????????Ki_in?=?2*sum(M(iCNj));
????????G(Cj)?=?Ki_in/m?-?2*K(i)*SumTot(Cj)/(m*m);
????????if?(ddebug)
??????????fprintf(‘Gaim?for?comm?%d?=>?%g\n‘Cj-1G(Cj));
????????end
????????if?G(Cj)?>?best_increase;
??????????best_increase?=?G(Cj);
??????????Cnew_t?=?Cj;
????????end
??????end
????end
????if?best_increase?>?0
??????Cnew?=?Cnew_t;
??????if?(debug)
????????fprintf(‘Move?%d?=>?%d\n‘i-1Cnew-1);
??????end
??????Cost(i)?=?best_increase;
????end
????Ck?=?find(COM==Cnew);
????SumIn(Cnew)?=?SumIn(Cnew)?+?2*sum(M(iCk));
????SumTot(Cnew)?=?SumTot(Cnew)?+?K(i);
????COM(i)?=?Cnew;
????if?(Cnew?~=?Ci)
??????gain?=?1;
????end
????
??end
??sCost?=?sum(Cost);
??[C2?S2]?=?reindex_com(COM);
??Nco?=?length(unique(COM));
??Nco2?=?length(S2(S2>1));
??mod?=?co
?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件???????5658??2008-07-15?13:52??Community_BGLL_Matlab\cluster_jl.m
?????文件???????4166??2008-07-15?13:52??Community_BGLL_Matlab\cluster_jl_cpp.m
?????文件???????5891??2008-07-15?13:57??Community_BGLL_Matlab\cluster_jl_orient.m
?????文件???????5621??2008-07-15?13:59??Community_BGLL_Matlab\cluster_jl_orientT.m
?????文件???????4056??2008-07-15?13:59??Community_BGLL_Matlab\cluster_jl_orientT_cpp.m
?????文件???????3859??2008-07-15?13:52??Community_BGLL_Matlab\cluster_jl_orient_cpp.m
?????文件???????5546??2008-07-15?13:52??Community_BGLL_Matlab\jl_clust.cpp
?????文件??????13241??2008-07-15?13:52??Community_BGLL_Matlab\jl_clust.mexglx
?????文件???????5856??2008-07-15?13:55??Community_BGLL_Matlab\jl_clust_orient.cpp
?????文件??????14264??2008-07-15?13:56??Community_BGLL_Matlab\jl_clust_orient.mexglx
?????文件???????1843??2008-06-26?15:32??Community_BGLL_Matlab\jl_mnew.cpp
?????文件???????8756??2008-07-15?13:52??Community_BGLL_Matlab\jl_mnew.mexglx
?????文件???????1428??2011-08-03?17:53??Community_BGLL_Matlab\readme.txt
?????目錄??????????0??2011-08-03?17:53??Community_BGLL_Matlab
-----------?---------??----------?-----??----
????????????????80185????????????????????14
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