def main():
datamat,datalabels = loadDataset("../dataset/lung-cancer.data")
print 'data ready'
sampledData, remainedData, sampledIndex, remainedIndex = data_sample(datamat,1,10)
print 'sampledData ready'
pop_kmeans = rsnn(sampledData, remainedData, sampledIndex, remainedIndex,'kmeans')
print 'kmeans end'
pop_ward = rsnn(sampledData, remainedData, sampledIndex, remainedIndex,'ward')
print 'ward end'
pop_complete = rsnn(sampledData, remainedData, sampledIndex, remainedIndex,'complete')
print 'complete end'
pop_average = rsnn(sampledData, remainedData, sampledIndex, remainedIndex,'average')
print 'average end'
pop = []
pop.extend(pop_kmeans)
pop.extend(pop_ward)
pop.extend(pop_complete)
pop.extend(pop_average)
hdf5_file_name = './Cluster_Ensembles.h5'
fileh = tables.open_file(hdf5_file_name, 'w')
fileh.create_group(fileh.root, 'consensus_group')
fileh.close()
pop = np.array(pop)
hypergraph_adjacency = build_hypergraph_adjacency(pop)
store_hypergraph_adjacency(hypergraph_adjacency, hdf5_file_name)
consensus_clustering_labels = CE.MCLA(hdf5_file_name, pop, verbose=True, N_clusters_max=10)
nmi = normalized_mutual_info_score(datalabels, consensus_clustering_labels)
ari = adjusted_rand_score(datalabels, consensus_clustering_labels)
print('nmi值： ')
print(nmi)
print('ari值： ')
print(ari)
def ensemble_crossover(population, index_arr):
hdf5_file_name = './Cluster_Ensembles.h5'
fileh = tables.open_file(hdf5_file_name, 'w')
fileh.create_group(fileh.root, 'consensus_group')
fileh.close()
individuals = [] #用于交叉的父代个体的集合
clusters_num = []
# print int(round(len(population)*0.25))
for i in range(20):
individuals.append(tournament(population, index_arr)) #二进制锦标赛法选择出父代个体
individuals = np.array(individuals)
for j in range(len(individuals)): #交叉产生的聚类簇的范围
individual = individuals[j]
aa = len(set(individual))
clusters_num.append(aa)
sort_clustersNum = sorted(
clusters_num) #sort对原list操作，但这里是set不能用sort(),只有用sorted()
clusters_max = random.randint(sort_clustersNum[0],
sort_clustersNum[-1] + 1)
hypergraph_adjacency = build_hypergraph_adjacency(individuals)
store_hypergraph_adjacency(hypergraph_adjacency, hdf5_file_name)
consensus_clustering_labels = CE.MCLA(hdf5_file_name,
individuals,
verbose=True,
N_clusters_max=clusters_max)
ind_ensemble = creator.Individual(consensus_clustering_labels)
print('交叉后的结果是：%s' % ind_ensemble)
return ind_ensemble
def all_ensemble(population, k):
hdf5_file_name = './Cluster_Ensembles.h5'
fileh = tables.open_file(hdf5_file_name, 'w')
fileh.create_group(fileh.root, 'consensus_group')
fileh.close()
pop = []
for i in range(len(population)):
ind = []
ind.extend(population[i])
pop.append(ind)
pop = np.array(pop)
hypergraph_adjacency = build_hypergraph_adjacency(pop)
store_hypergraph_adjacency(hypergraph_adjacency, hdf5_file_name)
consensus_clustering_labels = CE.MCLA(hdf5_file_name,
pop,
verbose=True,
N_clusters_max=k + 2)
return consensus_clustering_labels
def moclenew(datamat):
# datamat,datalabels = loadDataset("../dataset/glass.data")
print 'data ready'
pop_kmeans = ini_population(datamat, 'kmeans', 10)
print 'kmeans end'
pop_ward = ini_population(datamat, 'ward', 10)
print 'ward end'
pop_complete = ini_population(datamat, 'complete', 10)
print 'complete end'
pop_average = ini_population(datamat, 'average', 10)
print 'average end'
# pop_spc = ini_population(datamat, 'spc', 1)
# print 'spc end'
pop = []
pop.extend(pop_kmeans)
pop.extend(pop_complete)
pop.extend(pop_average)
# pop.extend(pop_spc)
init_population = []
for indiv1 in pop:
ind1 = creator.Individual(indiv1)
init_population.append(ind1)
filter_pop = filter(lambda x: len(x) > 0, init_population) ##去除初始化聚类失败的结果
population = filter_pop #population是总的种群，后续的交叉算法的结果也要添加进来
#为里第二个目标函数所用的矩阵，每个数据点的距离矩阵，计算一半
# dataLen = len(datamat)
# distances_matrix = zeros((dataLen, dataLen))
# for datai in range(dataLen):
# for dataj in range(datai+1,dataLen):
# distances_matrix[datai][dataj] = Euclidean_dist(datamat[datai],datamat[dataj])
distances_matrix = pairwise_distances(datamat,
metric='euclidean') # 数据集中数据点两两之间的距离
print "数据点距离矩阵计算完毕"
invalid_ind = [ind for ind in population if not ind.fitness.valid]
for ind in invalid_ind:
euDistance, eu_connect = mocle_index(datamat, distances_matrix, ind)
fitnesses = (euDistance, eu_connect)
ind.fitness.values = fitnesses
# fitnesses = toolbox.map(toolbox.evaluate, tile(datamat,(len(invalid_ind),1,1)),tile(distances_matrix,(len(invalid_ind),1,1)),invalid_ind)
#
# for ind, fit in zip(invalid_ind, fitnesses):
# ind.fitness.values = fit
# population = toolbox.select(population, len(population))
popeliteLen = len(population)
for i in range(generation):
print '第%s代' % i
popElite = toolbox.select(population, popeliteLen)
# Vary the population
# parentSpring = tools.selTournamentDCD(popElite, popeliteLen)
# parentSpring = [toolbox.clone(ind) for ind in parentSpring]
newoffspring = []
# applying crossover
popcrossover = toolbox.select(population, 2)
k1 = len(list(set(popcrossover[0])))
k2 = len(list(set(popcrossover[1])))
if k1 <= k2:
k = random.randint(k1, k2 + 1)
else:
k = random.randint(k2, k1 + 1)
# 其他聚类集成算子
hdf5_file_name = './Cluster_Ensembles.h5'
fileh = tables.open_file(hdf5_file_name, 'w')
fileh.create_group(fileh.root, 'consensus_group')
fileh.close()
popcrossover = np.array(popcrossover)
hypergraph_adjacency = build_hypergraph_adjacency(popcrossover)
store_hypergraph_adjacency(hypergraph_adjacency, hdf5_file_name)
resultList = CE.MCLA(hdf5_file_name,
popcrossover,
verbose=True,
N_clusters_max=k)
ind_ensemble = creator.Individual(resultList)
newoffspring.append(ind_ensemble)
# evaluating fitness of individuals with invalid fitnesses
invalid_ind = [ind for ind in newoffspring if not ind.fitness.valid]
for ind1 in invalid_ind:
euDistance1, eu_connect1 = mocle_index(datamat, distances_matrix,
ind1)
fitnesses1 = (euDistance1, eu_connect1)
ind1.fitness.values = fitnesses1
# fitnesses = toolbox.map(toolbox.evaluate, tile(datamat,(len(invalid_ind),1,1)),tile(distances_matrix,(len(invalid_ind),1,1)),invalid_ind)#这里只用了未经处理的数据,没有用到真实类别
#
# for ind, fit in zip(invalid_ind, fitnesses):
# ind.fitness.values = fit
# Chossing a population for the next generation
# population = toolbox.select(popElite + newoffspring, popeliteLen)
population = popElite + newoffspring
result1 = toolbox.nondominated(population, len(population))
nondominated_result = result1[0]
final_result, pbmValue = computePBM(datamat, nondominated_result)
return final_result, pbmValue
def main():
# init_population,init_ari,datamat,datalabels = ini_Cluster(kNumber=6) #多种聚类算法产生初始种群
datamat, datalabels = loadDataset("../dataset/soybean-small.data")
print 'data ready'
pop_kmeans = initialMultiRun(datamat, 10, 'kmeans')
print 'kmeans end'
pop_ward = initialMultiRun(datamat, 10, 'ward')
print 'ward end'
pop_complete = initialMultiRun(datamat, 10, 'complete')
print 'complete end'
pop_average = initialMultiRun(datamat, 10, 'average')
print 'average end'
pop = []
pop.extend(pop_kmeans)
pop.extend(pop_ward)
pop.extend(pop_complete)
pop.extend(pop_average)
init_population = []
for indiv1 in pop:
ind1 = creator.Individual(indiv1)
init_population.append(ind1)
filter_pop = filter(lambda x: len(x) > 0, init_population) ##去除初始化聚类失败的结果
population = filter_pop #population是总的种群，后续的交叉算法的结果也要添加进来
invalid_ind = [ind for ind in population if not ind.fitness.valid]
fitnesses = toolbox.map(toolbox.evaluate,
tile(datamat, (len(invalid_ind), 1, 1)),
tile(population, (len(invalid_ind), 1, 1)),
invalid_ind)
for ind, fit in zip(invalid_ind, fitnesses):
ind.fitness.values = fit
population = toolbox.select(population, len(population))
for i in range(generation):
print '第%s代' % i
popElite = toolbox.select(population, int(round(
len(population) * 0.5))) #top half from population
# Vary the population
parentSpring = tools.selTournamentDCD(population, len(population))
parentSpring = [toolbox.clone(ind) for ind in parentSpring]
newoffspring = []
# applying crossover
for indiv1, indiv2 in zip(parentSpring[::2], parentSpring[1::2]):
randNum = random.random() # generate a random number from 0 to 1
if randNum < 0.8:
toolbox.mate(indiv1, indiv2)
toolbox.mutate(indiv1)
toolbox.mutate(indiv2)
del indiv1.fitness.values, indiv2.fitness.values
newoffspring.append(indiv1)
newoffspring.append(indiv2)
else:
hdf5_file_name = './Cluster_Ensembles.h5'
fileh = tables.open_file(hdf5_file_name, 'w')
fileh.create_group(fileh.root, 'consensus_group')
fileh.close()
individuals = []
individuals.append(indiv1)
individuals.append(indiv2)
individuals = np.array(individuals)
hypergraph_adjacency = build_hypergraph_adjacency(individuals)
store_hypergraph_adjacency(hypergraph_adjacency,
hdf5_file_name)
consensus_clustering_labels = CE.MCLA(hdf5_file_name,
individuals,
verbose=True,
N_clusters_max=10)
ind_ensemble = creator.Individual(consensus_clustering_labels)
newoffspring.append(ind_ensemble)
# evaluating fitness of individuals with invalid fitnesses
invalid_ind = [ind for ind in newoffspring if not ind.fitness.valid]
fitnesses = toolbox.map(toolbox.evaluate,
tile(datamat, (len(invalid_ind), 1, 1)),
tile(newoffspring, (len(invalid_ind), 1, 1)),
invalid_ind) #这里只用了未经处理的数据,没有用到真实类别
for ind, fit in zip(invalid_ind, fitnesses):
ind.fitness.values = fit
# Chossing a population for the next generation
population = toolbox.select(popElite + newoffspring, len(population))
result1 = toolbox.nondominated(population, len(population))
print len(result1)
print result1
print len(result1[0])
print result1[0]
print 'ari值'
ari_arr = []
max_ari = -inf
for ind in result1[0]:
ari = adjusted_rand_score(datalabels, ind)
ari_arr.append(ari)
if ari > max_ari:
max_ari = ari
print ari_arr
print max_ari
nmi_arr = []
max_nmi = -inf
print 'nmi值'
for ind in result1[0]:
nmi = normalized_mutual_info_score(datalabels, ind)
nmi_arr.append(nmi)
if nmi > max_nmi:
max_nmi = nmi
print nmi_arr
print max_nmi