资源简介
Louvain算法Matlab版本
代码片段和文件信息
% 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));
mo
属性 大小 日期 时间 名称
----------- --------- ---------- ----- ----
目录 0 2016-07-18 13:08 Louvain-matlab-win\
文件 13876 2014-10-20 14:23 Louvain-matlab-win\Louvain.rar
目录 0 2016-07-18 13:08 Louvain-matlab-win\Louvain\
文件 330 2012-10-28 08:56 Louvain-matlab-win\Louvain\writefile.m
文件 970 2013-01-17 14:33 Louvain-matlab-win\Louvain\karate1.dat
文件 2904 2014-10-20 12:18 Louvain-matlab-win\Louvain\FastUnfording.m
文件 1080 2013-01-17 13:43 Louvain-matlab-win\Louvain\convert2one.m
文件 3859 2008-07-15 05:52 Louvain-matlab-win\Louvain\cluster_jl_orient_cpp.m
文件 4056 2008-07-15 05:59 Louvain-matlab-win\Louvain\cluster_jl_orientT_cpp.m
文件 5621 2008-07-15 05:59 Louvain-matlab-win\Louvain\cluster_jl_orientT.m
文件 5907 2013-01-17 14:35 Louvain-matlab-win\Louvain\cluster_jl_orient.m
文件 4166 2008-07-15 05:52 Louvain-matlab-win\Louvain\cluster_jl_cpp.m
文件 5674 2013-01-17 14:42 Louvain-matlab-win\Louvain\cluster_jl.m
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