def MIMICtest():
correctCount = 0
MIMIC_iters = 10
MIMIC_samples = 5 * N #max(1,int(N/10))
MIMIC_keep = int(.1 * MIMIC_samples)
t = 0
while correctCount < NUM_RIGHT and MIMIC_iters <= 500:
MIMIC_keep = int(max(.1 * MIMIC_samples, 1))
mimic = MIMIC(int(MIMIC_samples), int(MIMIC_keep), pop)
start = time.time()
fit = FixedIterationTrainer(mimic, int(MIMIC_iters))
fitness = fit.train()
t = time.time() - start
v = ef.value(mimic.getOptimal())
myWriter.addValue(fitness, "MIMIC_fitness", runNum)
myWriter.addValue(t, "MIMIC_searchTimes", runNum)
if v == N:
correctCount += 1
else:
correctCount = 0
MIMIC_iters *= 1.1
MIMIC_samples *= 1.1
myWriter.addValue(t, "MIMIC_times", 0)
myWriter.addValue(int(MIMIC_iters), "MIMIC_iters", 0)
myWriter.addValue(int(MIMIC_samples), "MIMIC_samples", 0)
myWriter.addValue(int(MIMIC_keep), "MIMIC_keep", 0)
print(
str(N) + ": MIMIC: " + str(ef.value(mimic.getOptimal())) + " took " +
str(t) + " seconds and " + str(int(MIMIC_iters)) + " iterations and " +
str(int(MIMIC_samples)) + " samples with keep " + str(int(MIMIC_keep)))
def run_mimic(t, samples, keep, m):
fill = [N] * N
ranges = array('i', fill)
ef = TravelingSalesmanRouteEvaluationFunction(points)
odd = DiscreteUniformDistribution(ranges)
fname = outfile.format('MIMIC{}_{}_{}'.format(samples, keep, m),
str(t + 1))
base.write_header(fname)
df = DiscreteDependencyTree(m, ranges)
ef = TravelingSalesmanRouteEvaluationFunction(points)
pop = GenericProbabilisticOptimizationProblem(ef, odd, df)
mimic = MIMIC(samples, keep, pop)
fit = FixedIterationTrainer(mimic, 10)
times = [0]
for i in range(0, maxIters, 10):
start = clock()
fit.train()
elapsed = time.clock() - start
times.append(times[-1] + elapsed)
fevals = ef.fevals
score = ef.value(mimic.getOptimal())
ef.fevals -= 1
st = '{},{},{},{}\n'.format(i, score, times[-1], fevals)
# print st
base.write_to_file(fname, st)
return
def run_mimic(t, samples, keep, m):
fname = outfile.format('MIMIC{}_{}_{}'.format(samples, keep, m),
str(t + 1))
ef = ContinuousPeaksEvaluationFunction(T)
odd = DiscreteUniformDistribution(ranges)
nf = DiscreteChangeOneNeighbor(ranges)
mf = DiscreteChangeOneMutation(ranges)
cf = SingleCrossOver()
gap = GenericGeneticAlgorithmProblem(ef, odd, mf, cf)
df = DiscreteDependencyTree(m, ranges)
pop = GenericProbabilisticOptimizationProblem(ef, odd, df)
mimic = MIMIC(samples, keep, pop)
fit = FixedIterationTrainer(mimic, 10)
times = [0]
for i in range(0, maxIters, 10):
start = clock()
fit.train()
elapsed = time.clock() - start
times.append(times[-1] + elapsed)
fevals = ef.fevals
score = ef.value(mimic.getOptimal())
ef.fevals -= 1
st = '{},{},{},{}\n'.format(i, score, times[-1], fevals)
# print st
base.write_to_file(fname, st)
return
def MIMICtest():
correctCount = 0
MIMIC_iters = 10
MIMIC_samples = 5*N #max(1,int(N/10))
MIMIC_keep = int(.1 * MIMIC_samples)
t=0
while correctCount < NUM_RIGHT and MIMIC_iters <= 500:
MIMIC_keep = int( max(.1 * MIMIC_samples, 1))
mimic = MIMIC(int(MIMIC_samples), int(MIMIC_keep), pop)
start = time.time()
fit = FixedIterationTrainer(mimic, int(MIMIC_iters))
fitness = fit.train()
t = time.time() - start
v = ef.value(mimic.getOptimal())
myWriter.addValue(fitness, "MIMIC_fitness", runNum)
myWriter.addValue(t, "MIMIC_searchTimes",runNum)
if v==N:
correctCount +=1
else:
correctCount = 0
MIMIC_iters *=1.1
MIMIC_samples *=1.1
myWriter.addValue(t,"MIMIC_times",0)
myWriter.addValue(int(MIMIC_iters),"MIMIC_iters",0)
myWriter.addValue(int(MIMIC_samples),"MIMIC_samples",0)
myWriter.addValue(int(MIMIC_keep),"MIMIC_keep",0)
print(str(N) + ": MIMIC: " + str(ef.value(mimic.getOptimal())) + " took " + str(t) +
" seconds and " + str(int(MIMIC_iters)) + " iterations and " + str(int(MIMIC_samples)) +
" samples with keep " + str(int(MIMIC_keep)))
def mimic_fac(args={}):
constant_params = {'op': pop}
params = merge_two_dicts(args, constant_params)
mimic = MIMIC(50, 10, pop)
mimic = MIMIC(args['samples'], int(args['samples'] * args['tokeep']), pop)
mfit = FixedIterationTrainer(mimic, num_iterations)
return mfit
def run_mimic(pop, ef, iterations=1000):
mimic = MIMIC(200, 20, pop)
fit = FixedIterationTrainer(mimic, iterations)
fit.train()
optimal_result = str(ef.value(mimic.getOptimal()))
print "MIMIC: " + optimal_result
return optimal_result, iterations
def run_experiment(self, opName):
"""Run a MIMIC optimization experiment for a given optimization
problem.
Args:
ef (AbstractEvaluationFunction): Evaluation function.
ranges (array): Search space ranges.
op (str): Name of optimization problem.
"""
outdir = 'results/OPT/{}'.format(opName) # get results directory
outfile = 'MIMIC_{}_{}_{}_results.csv'.format(self.s, self.k, self.m)
fname = get_abspath(outfile, outdir) # get output filename
# delete existing results file, if it already exists
try:
os.remove(fname)
except Exception as e:
print e
pass
with open(fname, 'w') as f:
f.write('iterations,fitness,time,fevals,trial\n')
# start experiment
for t in range(self.numTrials):
# initialize optimization problem and training functions
ranges, ef = self.op.get_ef()
mimic = None
df = DiscreteDependencyTree(self.m, ranges)
odd = DiscreteUniformDistribution(ranges)
pop = GenericProbabilisticOptimizationProblem(ef, odd, df)
mimic = MIMIC(self.s, self.k, pop)
fit = FixedIterationTrainer(mimic, 10)
# run experiment and train evaluation function
start = time.clock()
for i in range(0, self.maxIters, 10):
fit.train()
elapsed = time.clock() - start
fe = ef.valueCallCount
score = ef.value(mimic.getOptimal())
ef.valueCallCount -= 1
# write results to output file
s = '{},{},{},{},{}\n'.format(i + 10, score, elapsed, fe, t)
with open(fname, 'a+') as f:
f.write(s)
def mimic_discrete(name, ef, odd, ranges, iter_time, iters_total, iters_step, n_trials, params):
for i_trial in range(n_trials):
for samples, keep, m in itertools.product(*params):
df = DiscreteDependencyTree(m, ranges)
pop = GenericProbabilisticOptimizationProblem(ef, odd, df)
mimic_instance = MIMIC(samples, keep, pop)
mimic_trainer = FixedIterationTrainer(mimic_instance, iters_step)
mimic_state = {'problem': mimic_instance,
'trainer': mimic_trainer}
# wrap into class etc...
wrapper_mimic = AlgoWrapper(mimic_state,
lambda state: state['trainer'].train(),
lambda state: ef.value(state['problem'].getOptimal()),
lambda state: ef.value(state['problem'].getOptimal())
)
# create name and invalidate if super empty
decorated_name = ""
if name is not None and name != "":
decorated_name = name + "_samples_" + str(samples) + "_keep_" + str(keep) + "_m_" + str(m)
timed_trainer = TimedTrainer(decorated_name,
wrapper_mimic,
iter_time,
iters_total,
iters_step,
_param_dict={'name':name,
'samples':samples,
'keep':keep,
'm':m}
)
timed_trainer.run()
def MIMICAllRangeExperiment(name, points, problem, sampleRange, keepRange,
iterRange, mat):
currmax = -1
bestSampleSize = -1
bestKeep = -1
bestPath = []
lastRow = -1
for jdx, j in enumerate(sampleRange):
iVec = []
jVec = []
for idx, i in enumerate(keepRange): #percentage to keep
fitVec = []
row = idx * len(sampleRange) + jdx
keep = int(ceil(j * i)) #i is the percentage
print "samples " + str(j) + " keep " + str(keep)
if keep < j: #TODO: no longer needed now that using % keep isntead of absolute
mimic = MIMIC(j, keep, problem)
if (row == lastRow):
print "Error! lastRow == row! "
else:
lastRow = row
fitVec = IterRangeExperiment(name, mimic, points, iterRange,
mat, row)
else:
print "i <= j, skipping row " + str(row)
iVec.append(i)
jVec.append(j)
saveFit(name + "_keep", iVec, idx * len(sampleRange) + jdx, mat)
saveFit(name + "_sampleSize", jVec,
idx * len(sampleRange) + jdx, mat)
def MIMICKeepRangeExperiment(name, points, problem, keepRange, iterRange, mat):
for idx, i in enumerate(keepRange):
mimic = MIMIC(1000, i, problem)
fitVec = IterRangeExperiment(name, mimic, points, iterRange, mat,
idx * len(iterRange))
row = idx
saveFit(name + "_fitness", fitVec, idx, mat)
saveFit(name + "_iterations", iterRange, idx, mat)
saveFit(name + "_numSamples", keepRange, 0, mat)
def mimic():
for samples, keep, m in product([80], [40],
[0.15, 0.35, 0.55, 0.75, 0.95]):
fname = outfile.replace('XXX',
'MIMIC{}_{}_{}'.format(samples, keep, m))
with open(fname, 'w') as f:
f.write('iterations,fitness,time,fevals\n')
mimic = MIMIC(samples, keep, pop)
perform(mimic, fname)
def mimic():
for samples, keep, m in product([80], [40], [0.15, 0.35, 0.55, 0.75, 0.95]):
fname = outfile.replace('XXX','MIMIC{}_{}_{}'.format(samples,keep,m))
df = DiscreteDependencyTree(m, ranges)
with open(fname,'w') as f:
f.write('iterations,fitness,time,fevals\n')
pop = GenericProbabilisticOptimizationProblem(ef, odd, df)
mimic = MIMIC(samples, keep, pop)
perform(mimic, fname)
def solveit(oaname, params):
N = 60
T = N / 10
fill = [2] * N
ranges = array('i', fill)
iterations = 10000
tryi = 1
ef = ContinuousPeaksEvaluationFunction(T)
odd = DiscreteUniformDistribution(ranges)
nf = DiscreteChangeOneNeighbor(ranges)
mf = DiscreteChangeOneMutation(ranges)
cf = SingleCrossOver()
df = DiscreteDependencyTree(.1, ranges)
hcp = GenericHillClimbingProblem(ef, odd, nf)
gap = GenericGeneticAlgorithmProblem(ef, odd, mf, cf)
pop = GenericProbabilisticOptimizationProblem(ef, odd, df)
# fit = FixedIterationTrainer(rhc, 200000)
# fit.train()
if oaname == 'RHC':
iterations = int(params[0])
tryi = int(params[1])
oa = RandomizedHillClimbing(hcp)
if oaname == 'SA':
oa = SimulatedAnnealing(float(params[0]), float(params[1]), hcp)
if oaname == 'GA':
oa = StandardGeneticAlgorithm(int(params[0]), int(params[1]),
int(params[2]), gap)
if oaname == 'MMC':
oa = MIMIC(int(params[0]), int(params[1]), pop)
print "Running %s using %s for %d iterations, try %d" % (
oaname, ','.join(params), iterations, tryi)
print "=" * 20
starttime = timeit.default_timer()
output = []
for i in range(iterations):
oa.train()
if i % 10 == 0:
optimal = oa.getOptimal()
score = ef.value(optimal)
elapsed = float(timeit.default_timer() - starttime)
output.append([str(i), str(score), str(elapsed)])
print 'score: %.3f' % score
print 'train time: %.3f secs' % (int(timeit.default_timer() - starttime))
scsv = 'cp-%s-%s.csv' % (oaname, '-'.join(params))
print "Saving to %s" % (scsv),
with open(scsv, 'w') as csvf:
writer = csv.writer(csvf)
for row in output:
writer.writerow(row)
print "saved."
print "=" * 20
def mimicGATest():
popBegin = 1
popEnd = 101
keepBegin = 1
keepEnd = 90
mutBegin = 1
mutEnd = 90
itersBegin = 1
itersEnd = 200
samples = 10
keep = 2
problemSize = N
mimicRange = (problemSize)
iters = 1
paramRanges = Vector(8)
paramRanges.addElement(popBegin)
paramRanges.addElement(popEnd)
paramRanges.addElement(keepBegin)
paramRanges.addElement(keepEnd)
paramRanges.addElement(mutBegin)
paramRanges.addElement(mutEnd)
paramRanges.addElement(itersBegin)
paramRanges.addElement(itersEnd)
totalParamSize1 = (popEnd - popBegin + 1) + (keepEnd - keepBegin + 1) + (
mutEnd - mutBegin + 1) + (itersEnd - itersBegin + 1)
allParamValues = range(popBegin, popEnd + 1) + range(
keepBegin, keepEnd + 1) + range(mutBegin, mutEnd + 1) + range(
itersBegin, itersEnd + 1)
totalParamSize = len(allParamValues)
metaFun = RamysEvalMetafunc(ranges)
discreteDist = RamysMimicDistribution(
paramRanges) #DiscreteUniformDistribution(problemSize)
distFunc = DiscreteDependencyTree(.1, allParamValues)
findGA = GenericProbabilisticOptimizationProblem(metaFun, discreteDist,
distFunc)
mimic = MIMIC(samples, keep, findGA)
fit = FixedIterationTrainer(mimic, iters)
fit.train()
print str(N) + ": MIMIC finds GA : " + str(ef.value(mimic.getOptimal()))
def mimicGATest():
popBegin = 1
popEnd = 101
keepBegin = 1
keepEnd = 90
mutBegin = 1
mutEnd = 90
itersBegin = 1
itersEnd = 200
samples = 10
keep = 2
problemSize = N
mimicRange = (problemSize)
iters = 1
paramRanges = Vector(8)
paramRanges.addElement(popBegin)
paramRanges.addElement(popEnd)
paramRanges.addElement(keepBegin)
paramRanges.addElement(keepEnd)
paramRanges.addElement(mutBegin)
paramRanges.addElement(mutEnd)
paramRanges.addElement(itersBegin)
paramRanges.addElement(itersEnd)
totalParamSize1 = (popEnd - popBegin +1) + (keepEnd - keepBegin +1) + (mutEnd - mutBegin +1) + (itersEnd - itersBegin +1)
allParamValues = range(popBegin, popEnd+1)+range(keepBegin, keepEnd+1)+range(mutBegin, mutEnd+1)+range(itersBegin, itersEnd+1)
totalParamSize = len(allParamValues)
metaFun = RamysEvalMetafunc(ranges)
discreteDist = RamysMimicDistribution(paramRanges) #DiscreteUniformDistribution(problemSize)
distFunc = DiscreteDependencyTree(.1, allParamValues)
findGA = GenericProbabilisticOptimizationProblem(metaFun, discreteDist, distFunc)
mimic = MIMIC(samples, keep, findGA)
fit = FixedIterationTrainer(mimic, iters)
fit.train()
print str(N) + ": MIMIC finds GA : " + str(ef.value(mimic.getOptimal()))
def main():
"""Run this experiment"""
training_ints = initialize_instances('m_trg.csv')
testing_ints = initialize_instances('m_test.csv')
validation_ints = initialize_instances('m_val.csv')
factory = BackPropagationNetworkFactory()
measure = SumOfSquaresError()
data_set = DataSet(training_ints)
relu = RELU()
rule = RPROPUpdateRule()
oa_names = ["MIMIC"]
classification_network = factory.createClassificationNetwork([
INPUT_LAYER, HIDDEN_LAYER1, HIDDEN_LAYER2, HIDDEN_LAYER3, OUTPUT_LAYER
], relu)
nnop = NeuralNetworkOptimizationProblem(data_set, classification_network,
measure)
oa = MIMIC(200, 100, nnop)
train(oa, classification_network, 'MIMIC', training_ints, validation_ints,
testing_ints, measure)
def main():
"""Run this experiment"""
training_ints = initialize_instances(PATH + "X_train.csv")
testing_ints = initialize_instances(PATH + "X_test.csv")
validation_ints = initialize_instances(PATH + "y_train.csv")
factory = BackPropagationNetworkFactory()
measure = SumOfSquaresError()
logistic_sigmoid = LogisticSigmoid()
data_set = DataSet(training_ints)
data_set_size = data_set.size()
print(data_set_size)
print(type(data_set_size))
odd = DiscreteUniformDistribution([data_set_size])
df = DiscreteDependencyTree(.1, [data_set_size])
classification_network = factory.createClassificationNetwork(
[INPUT_LAYER, HIDDEN_LAYER1, OUTPUT_LAYER], logistic_sigmoid)
evaluation = NeuralNetworkEvaluationFunction(classification_network,
data_set, measure)
pop = GenericProbabilisticOptimizationProblem(evaluation, odd, df)
oa = MIMIC(data_set_size, int(0.1 * data_set_size), pop)
train(oa, classification_network, 'GA', training_ints, validation_ints,
testing_ints, measure)
odd = DiscreteUniformDistribution(ranges)
nf = DiscreteChangeOneNeighbor(ranges)
mf = DiscreteChangeOneMutation(ranges)
cf = UniformCrossOver()
df = DiscreteDependencyTree(.1, ranges)
# ---------------------------------------------------------------
N_ITERS = 100001
# MIMIC
start = time.time()
fit_hist = []
for n_samples in range(100, 1000, 200):
print n_samples
pop = GenericProbabilisticOptimizationProblem(ef, odd, df)
mimic = MIMIC(n_samples, 20, pop)
fh = FixedIterTrainer(ef, mimic, N_ITERS)
fit_hist.append(fh)
write_hist_csv(fit_hist, 'fitness_mimic_n_samples')
print time.time() - start, 'seconds'
# # 1553 secs
start = time.time()
fit_hist = []
for theta in [0.05, 0.10, 0.2, 0.3, 0.5]:
print theta
pop = GenericProbabilisticOptimizationProblem(ef, odd, df)
mimic = MIMIC(200, int(200 * theta), pop)
# MIMIC
for t in range(numTrials):
for samples, keep, m in product([100], [50], [0.1, 0.3, 0.5, 0.7, 0.9]):
fname = outfile.format('MIMIC{}_{}_{}'.format(samples, keep, m),
str(t + 1))
with open(fname, 'w') as f:
f.write('iterations,fitness,time,fevals\n')
ef = ContinuousPeaksEvaluationFunction(T)
odd = DiscreteUniformDistribution(ranges)
nf = DiscreteChangeOneNeighbor(ranges)
mf = DiscreteChangeOneMutation(ranges)
cf = SingleCrossOver()
gap = GenericGeneticAlgorithmProblem(ef, odd, mf, cf)
df = DiscreteDependencyTree(m, ranges)
pop = GenericProbabilisticOptimizationProblem(ef, odd, df)
mimic = MIMIC(samples, keep, pop)
fit = FixedIterationTrainer(mimic, 10)
times = [0]
for i in range(0, maxIters, 10):
start = clock()
fit.train()
elapsed = time.clock() - start
times.append(times[-1] + elapsed)
fevals = ef.getFunctionEvaluations()
score = ef.value(mimic.getOptimal())
fevals -= 1
st = '{},{},{},{}\n'.format(i, score, times[-1], fevals)
print st
with open(fname, 'a') as f:
f.write(st)
timeout = 1E6
# first find the global optimum by running for a long time
hcp0 = GenericHillClimbingProblem(ef, odd, nf)
rhc0 = RandomizedHillClimbing(hcp0)
i = 0
max = 0
while (i < timeout/10):
rhc0.train()
i += 1
max = ef.value(rhc0.getOptimal())
print "rhc0,", i,",", max
goal = max
pop0 = GenericProbabilisticOptimizationProblem(ef, odd, df)
mimic0 = MIMIC(200, 100, pop)
i = 0
while ( i< timeout/1000):
mimic0.train()
i += 1
max = ef.value(mimic0.getOptimal())
print "mimic0,", i,",", max
if (max > goal):
goal = max
gap0 = GenericGeneticAlgorithmProblem(ef, odd, mf, cf)
ga0 = StandardGeneticAlgorithm(200, 100, 25, gap0)
i = 0
while ( i< timeout/1000):
ga0.train()
i += 1
max = ef.value(ga0.getOptimal())
ef = ContinuousPeaksEvaluationFunction(T) odd = DiscreteUniformDistribution(ranges) nf = DiscreteChangeOneNeighbor(ranges) mf = DiscreteChangeOneMutation(ranges) cf = SingleCrossOver() df = DiscreteDependencyTree(.1, ranges) hcp = GenericHillClimbingProblem(ef, odd, nf) gap = GenericGeneticAlgorithmProblem(ef, odd, mf, cf) pop = GenericProbabilisticOptimizationProblem(ef, odd, df) rhc = RandomizedHillClimbing(hcp) fit = FixedIterationTrainer(rhc, 200000) fit.train() print "RHC: " + str(ef.value(rhc.getOptimal())) sa = SimulatedAnnealing(1E11, .95, hcp) fit = FixedIterationTrainer(sa, 200000) fit.train() print "SA: " + str(ef.value(sa.getOptimal())) ga = StandardGeneticAlgorithm(200, 100, 10, gap) fit = FixedIterationTrainer(ga, 1000) fit.train() print "GA: " + str(ef.value(ga.getOptimal())) mimic = MIMIC(200, 20, pop) fit = FixedIterationTrainer(mimic, 1000) fit.train() print "MIMIC: " + str(ef.value(mimic.getOptimal()))
# MIMIC
for t in range(numTrials):
for samples, keep, m in product([100], [50], [0.1, 0.3, 0.5, 0.7, 0.9]):
fname = outfile.format('MIMIC{}_{}_{}'.format(samples, keep, m),
str(t + 1))
with open(fname, 'w') as f:
f.write('iterations,fitness,time,fevals\n')
ef = FlipFlopEvaluationFunction()
odd = DiscreteUniformDistribution(ranges)
nf = DiscreteChangeOneNeighbor(ranges)
mf = DiscreteChangeOneMutation(ranges)
cf = SingleCrossOver()
gap = GenericGeneticAlgorithmProblem(ef, odd, mf, cf)
df = DiscreteDependencyTree(m, ranges)
pop = GenericProbabilisticOptimizationProblem(ef, odd, df)
mimic = MIMIC(samples, keep, pop)
fit = FixedIterationTrainer(mimic, 10)
times = [0]
for i in range(0, maxIters, 10):
start = clock()
fit.train()
elapsed = time.clock() - start
times.append(times[-1] + elapsed)
fevals = ef.fevals
score = ef.value(mimic.getOptimal())
ef.fevals -= 1
st = '{},{},{},{}\n'.format(i, score, times[-1], fevals)
print(st)
with open(fname, 'a') as f:
f.write(st)
ef = ContinuousPeaksEvaluationFunction(T) odd = DiscreteUniformDistribution(ranges) nf = DiscreteChangeOneNeighbor(ranges) mf = DiscreteChangeOneMutation(ranges) cf = SingleCrossOver() df = DiscreteDependencyTree(.1, ranges) hcp = GenericHillClimbingProblem(ef, odd, nf) gap = GenericGeneticAlgorithmProblem(ef, odd, mf, cf) pop = GenericProbabilisticOptimizationProblem(ef, odd, df) rhc = RandomizedHillClimbing(hcp) fit = FixedIterationTrainer(rhc, 200000) fit.train() print "RHC: " + str(ef.value(rhc.getOptimal())) sa = SimulatedAnnealing(1E11, .95, hcp) fit = FixedIterationTrainer(sa, 200000) fit.train() print "SA: " + str(ef.value(sa.getOptimal())) ga = StandardGeneticAlgorithm(200, 100, 10, gap) fit = FixedIterationTrainer(ga, 1000) fit.train() print "GA: " + str(ef.value(ga.getOptimal())) mimic = MIMIC(200, 20, pop) fit = FixedIterationTrainer(mimic, 1000) fit.train() print "MIMIC: " + str(ef.value(mimic.getOptimal()))
def main():
N=200
tempDenom = 5
T=N/tempDenom
fill = [2] * N
ranges = array('i', fill)
iterations = 2000
gaIters = 1000
mimicIters = 1000
gaPop = 200
gaMate = 100
gaMutate = 10
mimicSamples = 200
mimicToKeep = 20
saTemp = 1E11
saCooling = .95
alg = 'all'
run = 0
settings = []
try:
opts, args = getopt.getopt(sys.argv[1:], "ahn:rsgN:m:t:i:", ["gaIters=", "mimicIters=","gaPop=", "gaMate=", "gaMutate=", "mimicSamples=", "mimicToKeep=", "saTemp=", "saCooling="])
except:
print 'knapsack.py -i <iterations> -n <NUM_ITEMS> -c <COPIES_EACH> -w <MAX_WEIGHT> -v <MAX_VOLUME>'
sys.exit(2)
for opt, arg in opts:
if opt == '-h':
print 'knapsack.py -i <iterations> -n <NUM_ITEMS> -c <COPIES_EACH> -w <MAX_WEIGHT> -v <MAX_VOLUME>'
sys.exit(1)
elif opt == '-i':
iterations = int(arg)
elif opt == '-N':
N = int(arg)
elif opt == '-t':
T = float(arg)
elif opt == '-d':
tempDenom = int(arg)
elif opt == '-r':
alg = 'RHC'
elif opt == '-a':
alg = 'all'
elif opt == '-s':
alg = 'SA'
elif opt == '-g':
alg = 'GA'
elif opt == '-m':
alg = 'MIMIC'
elif opt == '--gaPop':
gaPop = int(arg)
elif opt == '--gaMate':
gaMate = int(arg)
elif opt == '--gaMutate':
gaMutate = int(arg)
elif opt == '--mimicSamples':
mimicSamples = int(arg)
elif opt == '--mimicToKeep':
mimicToKeep = int(arg)
elif opt == '--saTemp':
saTemp = float(arg)
elif opt == '--saCooling':
saCooling = float(arg)
elif opt == '--gaIters':
gaIters = int(arg)
elif opt == '--mimicIters':
mimicIters = int(arg)
elif opt == '-n':
run = int(arg)
vars = {
'N':N,
'tempDenom':tempDenom,
'T':T,
'fill':fill,
'ranges':ranges,
'iterations' :iterations,
'gaIters':gaIters,
'mimicIters':mimicIters,
'gaPop' :gaPop,
'gaMate' :gaMate,
'gaMutate' :gaMutate,
'mimicSamples' : mimicSamples,
'mimicToKeep' : mimicToKeep,
'saTemp' : saTemp,
'saCooling' : saCooling,
'alg' : alg,
'run' : run
}
settings = getSettings(alg, settings, vars)
T=N/tempDenom
fill = [2] * N
ranges = array('i', fill)
ef = FourPeaksEvaluationFunction(T)
odd = DiscreteUniformDistribution(ranges)
nf = DiscreteChangeOneNeighbor(ranges)
mf = DiscreteChangeOneMutation(ranges)
cf = SingleCrossOver()
df = DiscreteDependencyTree(.1, ranges)
hcp = GenericHillClimbingProblem(ef, odd, nf)
gap = GenericGeneticAlgorithmProblem(ef, odd, mf, cf)
pop = GenericProbabilisticOptimizationProblem(ef, odd, df)
if alg == 'RHC' or alg == 'all':
rhc = RandomizedHillClimbing(hcp)
fit = FixedIterationTrainer(rhc, iterations)
fit.train()
rows = []
row = []
row.append("Evaluation Function Value")
row.append(ef.value(rhc.getOptimal()))
rows.append(row)
print "RHC: " + str(ef.value(rhc.getOptimal()))
output2('4Peaks', 'RHC', rows, settings)
rows = []
buildFooter("4Peaks", "RHC", rows, settings),
outputFooter("4Peaks", "RHC", rows, settings)
if alg == 'SA' or alg == 'all':
sa = SimulatedAnnealing(saTemp, saCooling, hcp)
fit = FixedIterationTrainer(sa, iterations)
fit.train()
rows = []
row = []
row.append("Evaluation Function Value")
row.append(ef.value(sa.getOptimal()))
rows.append(row)
print "SA: " + str(ef.value(sa.getOptimal()))
output2('4Peaks', 'SA', rows, settings)
rows = []
buildFooter("4Peaks", "SA", rows, settings)
outputFooter("4Peaks", "SA", rows, settings)
if alg == 'GA' or alg == 'all':
ga = StandardGeneticAlgorithm(gaPop, gaMate, gaMutate, gap)
fit = FixedIterationTrainer(ga, gaIters)
fit.train()
print "GA: " + str(ef.value(ga.getOptimal()))
rows = []
row = []
row.append("Evaluation Function Value")
row.append(ef.value(ga.getOptimal()))
rows.append(row)
output2('4Peaks', 'GA', rows, settings)
rows = []
buildFooter("4Peaks", "GA", rows, settings)
outputFooter("4Peaks", "GA", rows , settings)
if alg == 'MIMIC' or alg == 'all':
mimic = MIMIC(mimicSamples, mimicToKeep, pop)
fit = FixedIterationTrainer(mimic, mimicIters)
fit.train()
print "MIMIC: " + str(ef.value(mimic.getOptimal()))
rows = []
row = []
row.append("Evaluation Function Value")
row.append(ef.value(mimic.getOptimal()))
rows.append(row)
output2('4Peaks', 'MIMIC', rows, settings)
rows = []
buildFooter("4Peaks", "GA", rows, settings)
outputFooter("4Peaks", "MIMIC", rows, settings)
print "GA Inverse of Distance: " + str(ef.value(ga.getOptimal()))
print "Route:"
path = []
for x in range(0, N):
path.append(ga.getOptimal().getDiscrete(x))
print path
# for mimic we use a sort encoding
ef = TravelingSalesmanSortEvaluationFunction(points)
fill = [N] * N
ranges = array("i", fill)
odd = DiscreteUniformDistribution(ranges)
df = DiscreteDependencyTree(0.1, ranges)
pop = GenericProbabilisticOptimizationProblem(ef, odd, df)
mimic = MIMIC(500, 100, pop)
fit = FixedIterationTrainer(mimic, 1000)
fit.train()
print "MIMIC Inverse of Distance: " + str(ef.value(mimic.getOptimal()))
print "Route:"
path = []
optimal = mimic.getOptimal()
fill = [0] * optimal.size()
ddata = array("d", fill)
for i in range(0, len(ddata)):
ddata[i] = optimal.getContinuous(i)
order = ABAGAILArrays.indices(optimal.size())
ABAGAILArrays.quicksort(ddata, order)
print order
train(sa, exp_name, "SA", "13", ef, 200000)
sa = SimulatedAnnealing(1E12, .90, hcp)
fit = FixedIterationTrainer(sa, 200000)
train(sa, exp_name, "SA", "14", ef, 200000)
sa = SimulatedAnnealing(1E12, .80, hcp)
fit = FixedIterationTrainer(sa, 200000)
train(sa, exp_name, "SA", "15", ef, 200000)
#### Experienet 2 - Tuning Algo Prams for Mimic ####
if True:
exp_name = "exp02"
mimic = MIMIC(500, 25, pop)
fit = FixedIterationTrainer(mimic, 1000)
train(mimic, exp_name, "MIMIC", "0", ef, 2000)
mimic = MIMIC(500, 50, pop)
fit = FixedIterationTrainer(mimic, 1000)
train(mimic, exp_name, "MIMIC", "1", ef, 2000)
mimic = MIMIC(500, 100, pop)
fit = FixedIterationTrainer(mimic, 1000)
train(mimic, exp_name, "MIMIC", "2", ef, 2000)
mimic = MIMIC(200, 10, pop)
fit = FixedIterationTrainer(mimic, 1000)
train(mimic, exp_name, "MIMIC", "3", ef, 2000)
def run_knapsack():
# Random number generator */
random = Random()
# The number of items
NUM_ITEMS = 40
# The number of copies each
COPIES_EACH = 4
# The maximum weight for a single element
MAX_WEIGHT = 50
# The maximum volume for a single element
MAX_VOLUME = 50
# The volume of the knapsack
KNAPSACK_VOLUME = MAX_VOLUME * NUM_ITEMS * COPIES_EACH * .4
# create copies
fill = [COPIES_EACH] * NUM_ITEMS
copies = array('i', fill)
# create weights and volumes
fill = [0] * NUM_ITEMS
weights = array('d', fill)
volumes = array('d', fill)
for i in range(0, NUM_ITEMS):
weights[i] = random.nextDouble() * MAX_WEIGHT
volumes[i] = random.nextDouble() * MAX_VOLUME
# create range
fill = [COPIES_EACH + 1] * NUM_ITEMS
ranges = array('i', fill)
ef = KnapsackEvaluationFunction(weights, volumes, KNAPSACK_VOLUME, copies)
odd = DiscreteUniformDistribution(ranges)
nf = DiscreteChangeOneNeighbor(ranges)
mf = DiscreteChangeOneMutation(ranges)
cf = UniformCrossOver()
df = DiscreteDependencyTree(.1, ranges)
hcp = GenericHillClimbingProblem(ef, odd, nf)
gap = GenericGeneticAlgorithmProblem(ef, odd, mf, cf)
pop = GenericProbabilisticOptimizationProblem(ef, odd, df)
iters = [50, 100, 250, 500, 1000, 2500, 5000, 10000, 25000, 50000, 100000]
num_repeats = 5
rhc_results = []
rhc_times = []
for i in iters:
print(i)
for j in range(num_repeats):
start = time.time()
rhc = RandomizedHillClimbing(hcp)
fit = FixedIterationTrainer(rhc, i)
fit.train()
end = time.time()
rhc_results.append(ef.value(rhc.getOptimal()))
rhc_times.append(end - start)
#print "RHC: " + str(ef.value(rhc.getOptimal()))
sa_results = []
sa_times = []
for i in iters:
print(i)
for j in range(num_repeats):
start = time.time()
sa = SimulatedAnnealing(100, .95, hcp)
fit = FixedIterationTrainer(sa, i)
fit.train()
end = time.time()
sa_results.append(ef.value(sa.getOptimal()))
sa_times.append(end - start)
#print "SA: " + str(ef.value(sa.getOptimal()))
ga_results = []
ga_times = []
for i in iters:
print(i)
for j in range(num_repeats):
start = time.time()
ga = StandardGeneticAlgorithm(200, 150, 25, gap)
fit = FixedIterationTrainer(ga, i)
fit.train()
end = time.time()
ga_results.append(ef.value(sa.getOptimal()))
ga_times.append(end - start)
#print "GA: " + str(ef.value(ga.getOptimal()))
mimic_results = []
mimic_times = []
for i in iters[0:6]:
print(i)
for j in range(num_repeats):
start = time.time()
mimic = MIMIC(200, 100, pop)
fit = FixedIterationTrainer(mimic, i)
fit.train()
end = time.time()
mimic_results.append(ef.value(mimic.getOptimal()))
mimic_times.append(end - start)
#print "MIMIC: " + str(ef.value(mimic.getOptimal()))
with open('knapsack.csv', 'w') as csvfile:
writer = csv.writer(csvfile)
writer.writerow(rhc_results)
writer.writerow(rhc_times)
writer.writerow(sa_results)
writer.writerow(sa_times)
writer.writerow(ga_results)
writer.writerow(ga_times)
writer.writerow(mimic_results)
writer.writerow(mimic_times)
return rhc_results, rhc_times, sa_results, sa_times, ga_results, ga_times, mimic_results, mimic_times
def main():
iterations = 200000
alg = 'all'
gaPop = 2000
gaMate = 1500
gaMutate = 250
mimicSamples = 500
mimicToKeep = 100
saTemp = 1E12
saCooling = .999
gaIters = 1000
mimicIters = 1000
run = 0
settings = []
try:
opts, args = getopt.getopt(sys.argv[1:], "ahrsgmn:i:", ["gaIters=", "mimicIters=", "gaPop=", "gaMate=", "gaMutate=", "mimicSamples=", "mimicToKeep=", "saTemp=", "saCooling="])
except:
print 'travelingsalesman.py -i <iterations>'
sys.exit(2)
for opt, arg in opts:
if opt == '-h':
print 'travelingsalesman.py -i <iterations>'
sys.exit(1)
elif opt == '-i':
if arg < 1:
print 'Iterations must be greater than 0'
sys.exit(2)
iterations = int(arg)
elif opt == '-a':
alg = 'all'
elif opt == '-r':
alg = 'RHC'
elif opt == '-s':
alg = 'SA'
elif opt == '-g':
alg = 'GA'
elif opt == '-m':
alg = 'MIMIC'
elif opt == '--gaPop':
if arg < 1:
print 'Population must be greater than 0'
sys.exit(2)
gaPop = int(arg)
elif opt == '--gaMate':
if arg < 1:
print 'Mating must be greater than 0'
sys.exit(2)
gaMate = int(arg)
elif opt == '--gaMutate':
if arg < 1:
print 'Mutators must be greater than 0'
sys.exit(2)
gaMutate = int(arg)
elif opt == '--mimicSamples':
if arg < 1:
print 'MIMIC samples must be greater than 0'
sys.exit(2)
mimicSamples = int(arg)
elif opt == '--mimicToKeep':
if arg < 1:
print 'MIMIC to keep must be greater than 0'
sys.exit(2)
mimicToKeep = int(arg)
elif opt == '--saTemp':
saTemp = float(arg)
elif opt == '--saCooling':
saCooling = float(arg)
elif opt == '-n':
run = int(arg)
elif opt == '--gaIters':
if arg < 1:
print 'GA Iterations must be greater than 0'
sys.exit(2)
gaIters = int(arg)
elif opt == '--mimicIters':
if arg < 1:
print 'MIMIC Iterations must be greater than 0'
sys.exit(2)
mimicIters = int(arg)
vars = {
'iterations' : iterations,
'alg' : alg,
'gaPop' : gaPop,
'gaMate' : gaMate,
'gaMutate' : gaMutate,
'mimicSamples' : mimicSamples,
'mimicToKeep' : mimicToKeep,
'saTemp' : saTemp,
'saCooling' : saCooling,
'gaIters' : gaIters,
'mimicIters' : mimicIters,
'run' : run
}
settings = getSettings(alg, settings, vars)
if gaPop < gaMate or gaPop < gaMutate or gaMate < gaMutate:
pebkac({gaPop: 'total population',gaMate : 'mating population', gaMutate : 'mutating population'}, alg, 'total population', settings)
if mimicSamples < mimicToKeep:
pebkac({mimicSamples: 'mimic samples', mimicToKeep : 'mimic to keep'}, alg, 'mimic samples', settings)
prob = 'Traveling Sales Problem'
invDist = {}
cities = CityList()
N = len(cities)
#random = Random()
points = [[0 for x in xrange(2)] for x in xrange(N)]
for i in range(0, len(points)):
coords = cities.getCoords(i)
points[i][0] = coords[0]
points[i][1] = coords[1]
ef = TravelingSalesmanRouteEvaluationFunction(points)
odd = DiscretePermutationDistribution(N)
nf = SwapNeighbor()
mf = SwapMutation()
cf = TravelingSalesmanCrossOver(ef)
hcp = GenericHillClimbingProblem(ef, odd, nf)
gap = GenericGeneticAlgorithmProblem(ef, odd, mf, cf)
rows = []
if alg == 'RHC' or alg == 'all':
print '\n----------------------------------'
print 'Using Random Hill Climbing'
for label, setting in settings:
print label + ":" + str(setting)
rhc = RandomizedHillClimbing(hcp)
fit = FixedIterationTrainer(rhc, iterations)
fit.train()
path = []
for x in range(0,N):
path.append(rhc.getOptimal().getDiscrete(x))
output(prob, 'RHC', path, points, settings)
rows = []
row = []
row.append("Inverse of Distance")
row.append(ef.value(rhc.getOptimal()))
rows.append(row)
invDist['RHC'] = ef.value(rhc.getOptimal())
buildFooter(prob, 'RHC', rows, settings)
outputFooter(prob, 'RHC', rows, settings)
if alg == 'SA' or alg == 'all':
print 'Using Simulated Annealing'
for label, setting in settings:
print label + ":" + str(setting)
sa = SimulatedAnnealing(saTemp, saCooling, hcp)
fit = FixedIterationTrainer(sa, iterations)
fit.train()
path = []
for x in range(0,N):
path.append(sa.getOptimal().getDiscrete(x))
output(prob, 'SA', path, points, settings)
rows = []
row = []
row.append("Inverse of Distance")
row.append(ef.value(sa.getOptimal()))
rows.append(row)
invDist['SA'] = ef.value(sa.getOptimal())
buildFooter(prob, 'SA', rows, settings)
outputFooter(prob, 'SA', rows, settings)
if alg == 'GA' or alg == 'all':
print '\n----------------------------------'
print 'Using Genetic Algorithm'
for label, setting in settings:
print label + ":" + str(setting)
ga = StandardGeneticAlgorithm(gaPop, gaMate, gaMutate, gap)
fit = FixedIterationTrainer(ga, gaIters)
fit.train()
path = []
for x in range(0,N):
path.append(ga.getOptimal().getDiscrete(x))
output(prob, 'GA', path, points, settings)
rows = []
row = []
row.append("Inverse of Distance")
row.append(ef.value(ga.getOptimal()))
rows.append(row)
invDist['GA'] = ef.value(ga.getOptimal())
buildFooter(prob, 'GA', rows, settings)
outputFooter(prob, 'GA', rows, settings)
if alg == 'MIMIC' or alg == 'all':
print '\n----------------------------------'
print 'Using MIMIC'
for label, setting in settings:
print label + ":" + str(setting)
# for mimic we use a sort encoding
ef = TravelingSalesmanSortEvaluationFunction(points);
fill = [N] * N
ranges = array('i', fill)
odd = DiscreteUniformDistribution(ranges);
df = DiscreteDependencyTree(.1, ranges);
pop = GenericProbabilisticOptimizationProblem(ef, odd, df);
mimic = MIMIC(mimicSamples, mimicToKeep, pop)
fit = FixedIterationTrainer(mimic, mimicIters)
fit.train()
path = []
optimal = mimic.getOptimal()
fill = [0] * optimal.size()
ddata = array('d', fill)
for i in range(0,len(ddata)):
ddata[i] = optimal.getContinuous(i)
order = ABAGAILArrays.indices(optimal.size())
ABAGAILArrays.quicksort(ddata, order)
output(prob, 'MIMIC', order, points, settings)
rows = []
row = []
row.append("Inverse of Distance")
row.append(ef.value(mimic.getOptimal()))
rows.append(row)
invDist['MIMIC'] = ef.value(mimic.getOptimal())
buildFooter(prob, 'MIMIC', rows, settings)
outputFooter(prob, 'MIMIC', rows, settings)
maxn = max(len(key) for key in invDist)
maxd = max(len(str(invDist[key])) for key in invDist)
print "Results"
for result in invDist:
print "%-*s %s %-*s" % (len('Best Alg') + 2, result, ':', maxd, invDist[result])
if alg == 'all':
print "%-*s %s %-*s" % (len('Best Alg') + 2, 'Best Alg', ':', maxd, max(invDist.iterkeys(), key=(lambda key: invDist[key])))
print '----------------------------------'
ga = StandardGeneticAlgorithm(200, 100, 10, genetic_problem)
t0 = time()
iters = 0
score = 0
f.write("starting GA\n")
while iters < 5000:
ga.train()
score = ef.value(ga.getOptimal())
f.write(str(iters) + "," + str(score) +"\n")
iters += 1
print "GA: " + str(ef.value(ga.getOptimal())), "time taken", time() - t0, "Iterations", iters
mimic = MIMIC(200, 100, probablistic_optimization)
score = 0
t0 = time()
iters = 0
f.write("starting MIMIC\n")
while iters < 1000:
mimic.train()
score = ef.value(mimic.getOptimal())
f.write(str(iters) + "," + str(score) +"\n")
iters += 1
print "MIMIC: " + str(ef.value(mimic.getOptimal())), "time taken", time() - t0, "Iterations", iters
def main():
# The number of items
NUM_ITEMS = 40
# The number of copies each
COPIES_EACH = 4
# The maximum weight for a single element
MAX_WEIGHT = 50
# The maximum volume for a single element
MAX_VOLUME = 50
iterations = 20000
gaIters = 1000
mimicIters = 1000
gaPop = 200
gaMate = 150
gaMutate = 25
mimicSamples = 200
mimicToKeep = 100
saTemp = 100
saCooling = .95
alg = 'all'
run = 0
settings = []
try:
opts, args = getopt.getopt(sys.argv[1:], "ahrsgmn:N:c:w:v:i:", ["gaIters=", "mimicIters=","gaPop=", "gaMate=", "gaMutate=", "mimicSamples=", "mimicToKeep=", "saTemp=", "saCooling="])
except:
print 'knapsack.py -i <iterations> -n <NUM_ITEMS> -c <COPIES_EACH> -w <MAX_WEIGHT> -v <MAX_VOLUME>'
sys.exit(2)
for opt, arg in opts:
if opt == '-h':
print 'knapsack.py -i <iterations> -n <NUM_ITEMS> -c <COPIES_EACH> -w <MAX_WEIGHT> -v <MAX_VOLUME>'
sys.exit(1)
elif opt == '-i':
iterations = int(arg)
elif opt == '-N':
NUM_ITEMS = int(arg)
elif opt == '-c':
COPIES_EACH = int(arg)
elif opt == '-w':
MAX_WEIGHT = int(arg)
elif opt == '-v':
MAX_VOLUME = int(arg)
elif opt == '-n':
run = int(arg)
elif opt == '-r':
alg = 'RHC'
elif opt == '-s':
alg = 'SA'
elif opt == '-g':
alg = 'GA'
elif opt == '-m':
alg = 'MIMIC'
elif opt == '-a':
alg = 'all'
elif opt == '--gaPop':
gaPop = int(arg)
elif opt == '--gaMate':
gaMate = int(arg)
elif opt == '--gaMutate':
gaMutate = int(arg)
elif opt == '--mimicSamples':
mimicSamples = int(arg)
elif opt == '--mimicToKeep':
mimicToKeep = int(arg)
elif opt == '--saTemp':
saTemp = float(arg)
elif opt == '--saCooling':
saCooling = float(arg)
elif opt == '--gaIters':
gaIters = int(arg)
elif opt == '--mimicIters':
mimicIters = int(arg)
vars ={
'NUM_ITEMS' : NUM_ITEMS,
'COPIES_EACH' : COPIES_EACH,
'MAX_WEIGHT' : MAX_WEIGHT,
'MAX_VOLUME' : MAX_VOLUME,
'iterations' : iterations,
'gaIters' : gaIters,
'mimicIters' : mimicIters,
'gaPop' : gaPop,
'gaMate' : gaMate,
'gaMutate' : gaMutate,
'mimicSamples' : mimicSamples,
'mimicToKeep' : mimicToKeep,
'saTemp' : saTemp,
'saCooling' : saCooling,
'alg' : alg,
'run' : run
}
settings = getSettings(alg, settings, vars)
# Random number generator */
random = Random()
# The volume of the knapsack
KNAPSACK_VOLUME = MAX_VOLUME * NUM_ITEMS * COPIES_EACH * .4
# create copies
fill = [COPIES_EACH] * NUM_ITEMS
copies = array('i', fill)
# create weights and volumes
fill = [0] * NUM_ITEMS
weights = array('d', fill)
volumes = array('d', fill)
for i in range(0, NUM_ITEMS):
weights[i] = random.nextDouble() * MAX_WEIGHT
volumes[i] = random.nextDouble() * MAX_VOLUME
# create range
fill = [COPIES_EACH + 1] * NUM_ITEMS
ranges = array('i', fill)
ef = KnapsackEvaluationFunction(weights, volumes, KNAPSACK_VOLUME, copies)
odd = DiscreteUniformDistribution(ranges)
nf = DiscreteChangeOneNeighbor(ranges)
mf = DiscreteChangeOneMutation(ranges)
cf = UniformCrossOver()
df = DiscreteDependencyTree(.1, ranges)
hcp = GenericHillClimbingProblem(ef, odd, nf)
gap = GenericGeneticAlgorithmProblem(ef, odd, mf, cf)
pop = GenericProbabilisticOptimizationProblem(ef, odd, df)
if alg == 'RHC' or alg == 'all':
rhc = RandomizedHillClimbing(hcp)
fit = FixedIterationTrainer(rhc, iterations)
fit.train()
print "RHC: " + str(ef.value(rhc.getOptimal()))
rows = []
row = []
row.append("Evaluation Function Value")
row.append(str(ef.value(rhc.getOptimal())))
rows.append(row)
output2('Knapsack', 'RHC', rows, settings)
rows = []
buildFooter("Knapsack", "RHC", rows, settings)
outputFooter("Knapsack", "RHC", rows , settings)
if alg == 'SA' or alg == 'all':
sa = SimulatedAnnealing(saTemp, saCooling, hcp)
fit = FixedIterationTrainer(sa, iterations)
fit.train()
rows = []
row = []
row.append("Evaluation Function Value")
row.append(ef.value(sa.getOptimal()))
rows.append(row)
print "SA: " + str(ef.value(sa.getOptimal()))
output2('Knapsack', 'SA', rows, settings)
rows = []
buildFooter("Knapsack", "SA", rows, settings)
outputFooter("Knapsack", "SA", rows, settings)
if alg == 'GA' or alg == 'all':
ga = StandardGeneticAlgorithm(gaPop, gaMate, gaMutate, gap)
fit = FixedIterationTrainer(ga, gaIters)
fit.train()
rows = []
row = []
row.append("Evaluation Function Value")
row.append(ef.value(ga.getOptimal()))
rows.append(row)
print "GA: " + str(ef.value(ga.getOptimal()))
output2('Knapsack', 'GA', rows, settings)
buildFooter("Knapsack", "GA", rows, settings)
outputFooter("Knapsack", "GA", rows , settings)
if alg == 'MIMIC' or alg == 'all':
mimic = MIMIC(mimicSamples, mimicToKeep, pop)
fit = FixedIterationTrainer(mimic, mimicIters)
fit.train()
print "MIMIC: " + str(ef.value(mimic.getOptimal()))
rows = []
row = []
row.append("Evaluation Function Value")
row.append(ef.value(mimic.getOptimal()))
rows.append(row)
output2('Knapsack', 'MIMIC', rows, settings)
rows = []
buildFooter("Knapsack", "MIMIC", rows, settings)
outputFooter("Knapsack", "MIMIC", rows , settings)
def solveit(oaname, params):
# set N value. This is the number of points
N = 50
iterations = 1000
tryi = 1
random = Random()
points = [[0 for x in xrange(2)] for x in xrange(N)]
for i in range(0, len(points)):
points[i][0] = random.nextDouble()
points[i][1] = random.nextDouble()
ef = TravelingSalesmanRouteEvaluationFunction(points)
odd = DiscretePermutationDistribution(N)
nf = SwapNeighbor()
mf = SwapMutation()
cf = TravelingSalesmanCrossOver(ef)
hcp = GenericHillClimbingProblem(ef, odd, nf)
gap = GenericGeneticAlgorithmProblem(ef, odd, mf, cf)
if oaname == "RHC":
iterations = int(params[0])
tryi = int(params[1])
oa = RandomizedHillClimbing(hcp)
if oaname == "SA":
oa = SimulatedAnnealing(float(params[0]), float(params[1]), hcp)
if oaname == "GA":
iterations=1000
oa = StandardGeneticAlgorithm(int(params[0]), int(params[1]), int(params[2]), gap)
if oaname == "MMC":
iterations=1000
# for mimic we use a sort encoding
ef = TravelingSalesmanSortEvaluationFunction(points)
fill = [N] * N
ranges = array('i', fill)
odd = DiscreteUniformDistribution(ranges)
df = DiscreteDependencyTree(.1, ranges)
pop = GenericProbabilisticOptimizationProblem(ef, odd, df)
oa = MIMIC(int(params[0]), int(params[1]), pop)
print "Running %s using %s for %d iterations, try %d" % (oaname, ','.join(params), iterations, tryi)
print "="*20
starttime = timeit.default_timer()
output = []
for i in range(iterations):
oa.train()
if i%10 == 0:
optimal = oa.getOptimal()
score = ef.value(optimal)
elapsed = int(timeit.default_timer()-starttime)
output.append([str(i), str(score), str(elapsed)])
print 'Inverse of Distance [score]: %.3f' % score
print 'train time: %d secs' % (int(timeit.default_timer()-starttime))
scsv = 'tsp-%s-%s.csv' % (oaname, '-'.join(params))
print "Saving to %s" % (scsv),
with open(scsv, 'w') as csvf:
writer = csv.writer(csvf)
for row in output:
writer.writerow(row)
print "saved."
print "="*20
print "Route:"
if oaname == 'MMC':
optimal = oa.getOptimal()
fill = [0] * optimal.size()
ddata = array('d', fill)
for i in range(0,len(ddata)):
ddata[i] = optimal.getContinuous(i)
order = ABAGAILArrays.indices(optimal.size())
ABAGAILArrays.quicksort(ddata, order)
print order
else:
path = []
for x in range(0,N):
path.append(oa.getOptimal().getDiscrete(x))
print path
path = []
for x in range(0, N):
path.append(ga.getOptimal().getDiscrete(x))
print(path)
# MIMIC
# for mimic we use a sort encoding
for i in range(trials):
ef = TravelingSalesmanSortEvaluationFunction(points)
fill = [N] * N
ranges = array('i', fill)
odd = DiscreteUniformDistribution(ranges)
df = DiscreteDependencyTree(.1, ranges)
pop = GenericProbabilisticOptimizationProblem(ef, odd, df)
mimic = MIMIC(500, 100, pop)
fit = FixedIterationTrainer(mimic, 1000)
start = clock()
fit.train()
end = clock()
total_time = end - start
max_fit = ef.value(mimic.getOptimal())
time_optimum = [total_time, max_fit]
mimic_data.append(time_optimum)
print "MIMIC Inverse of Distance: " + str(ef.value(mimic.getOptimal()))
print "Route:"
path = []
optimal = mimic.getOptimal()
fill = [0] * optimal.size()
ddata = array('d', fill)
for i in range(0, len(ddata)):
print "SA " + str(value), iters, clock_time
#-- Genetic Algorithm
ga = StandardGeneticAlgorithm(200, 100, 10, gap)
for iters in niters:
start = time.time()
fit = FixedIterationTrainer(ga, iters)
value = 0
for isample in range(nsample):
fit.train()
value += ef.value(ga.getOptimal())
end = time.time()
clock_time = (end - start) / nsample
value = round(value / nsample, 2)
print "GA " + str(value), iters, clock_time
#-- MIMIC bla bla
mimic = MIMIC(200, 20, pop)
niters = [50, 200, 500, 800, 1000, 1200, 1500, 2000, 4000, 10000]
for iters in niters:
start = time.time()
fit = FixedIterationTrainer(mimic, iters)
value = 0
for isample in range(nsample):
fit.train()
value += ef.value(mimic.getOptimal())
end = time.time()
clock_time = (end - start) / nsample
value = round(value / nsample, 2)
print "MIMIC " + str(value), iters, clock_time
ga_params.append(
[pop_size, prop_mate, prop_mutate, iter, N])
ga_scores.append(score)
ga_times.append(runtime)
ga_results[N][iter][pop_size][prop_mate][
prop_mutate]['scores'][trial_num] = score
ga_results[N][iter][pop_size][prop_mate][
prop_mutate]['runtimes'][trial_num] = runtime
# print("GA best score: ", score, " in time: ", runtime, " with iters: ", iter)
print "\tFinished GA"
if do_mi:
for sample in mi_samples:
for keep_prop in mi_keep_prop:
keep = int(math.floor(keep_prop * sample))
mimic = MIMIC(sample, keep, pop)
for iter in mi_iter:
score, call_count, runtime = helpers.eval_algo(
ef, mimic, iter)
mi_scores.append(score)
mi_times.append(runtime)
mi_params.append([sample, keep_prop, iter, N])
mi_scores.append(score)
mi_times.append(runtime)
mi_results[N][iter][sample][keep_prop]['scores'][
trial_num] = score
mi_results[N][iter][sample][keep_prop]['runtimes'][
trial_num] = runtime
# print("GA best score: ", score, " in time: ", runtime, " with iters: ", iter)
# print("MIMIC Inverse of Distance: ", score, " in time: ", runtime, " with iters: ", iter)
print "\tFinished MIMIC"
print "RHC Inverse of Distance: " + str(ef.value(rhc.getOptimal()))
sa = SimulatedAnnealing(1E9, .98, hcp)
fit = FixedIterationTrainer(sa, 200000)
score_SA.append(train(sa, "SA", ef, 200000, "test", expt))
print "SA Inverse of Distance: " + str(ef.value(sa.getOptimal()))
ga = StandardGeneticAlgorithm(225, 40, 5, gap)
fit = FixedIterationTrainer(ga, 1000)
score_GA.append(train(ga, "GA", ef, 40000, "test", expt))
print "GA Inverse of Distance: " + str(ef.value(ga.getOptimal()))
# for mimic we use a sort encoding
ef = TravelingSalesmanSortEvaluationFunction(points)
fill = [N] * N
ranges = array('i', fill)
odd = DiscreteUniformDistribution(ranges)
df = DiscreteDependencyTree(.1, ranges)
pop = GenericProbabilisticOptimizationProblem(ef, odd, df)
mimic = MIMIC(150, 20, pop)
fit = FixedIterationTrainer(mimic, 1000)
score_MIMIC.append(train(mimic, "MIMIC", ef, 4000, "test", expt))
print "MIMIC Inverse of Distance: " + str(ef.value(mimic.getOptimal()))
print("Final averaged results")
print("RHC= " + str(sum(score_RHC) / len(score_RHC)))
print("SA= " + str(sum(score_SA) / len(score_SA)))
print("GA= " + str(sum(score_GA) / len(score_GA)))
print("MIMIC= " + str(sum(score_MIMIC) / len(score_MIMIC)))
def run_traveling_salesman():
# set N value. This is the number of points
N = 50
random = Random()
points = [[0 for x in xrange(2)] for x in xrange(N)]
for i in range(0, len(points)):
points[i][0] = random.nextDouble()
points[i][1] = random.nextDouble()
ef = TravelingSalesmanRouteEvaluationFunction(points)
odd = DiscretePermutationDistribution(N)
nf = SwapNeighbor()
mf = SwapMutation()
cf = TravelingSalesmanCrossOver(ef)
hcp = GenericHillClimbingProblem(ef, odd, nf)
gap = GenericGeneticAlgorithmProblem(ef, odd, mf, cf)
iters = [50, 100, 250, 500, 1000, 2500, 5000, 10000, 25000, 50000, 100000]
num_repeats = 5
rhc_results = []
rhc_times = []
for i in iters:
print(i)
for j in range(num_repeats):
start = time.time()
rhc = RandomizedHillClimbing(hcp)
fit = FixedIterationTrainer(rhc, i)
fit.train()
end = time.time()
rhc_results.append(ef.value(rhc.getOptimal()))
rhc_times.append(end - start)
print "RHC Inverse of Distance: " + str(ef.value(rhc.getOptimal()))
# print "Route:"
# path = []
# for x in range(0,N):
# path.append(rhc.getOptimal().getDiscrete(x))
# print path
sa_results = []
sa_times = []
for i in iters:
print(i)
for j in range(num_repeats):
start = time.time()
sa = SimulatedAnnealing(1E12, .999, hcp)
fit = FixedIterationTrainer(sa, i)
fit.train()
sa_results.append(ef.value(sa.getOptimal()))
sa_times.append(end - start)
print "SA Inverse of Distance: " + str(ef.value(sa.getOptimal()))
# print "Route:"
# path = []
# for x in range(0,N):
# path.append(sa.getOptimal().getDiscrete(x))
# print path
ga_results = []
ga_times = []
for i in iters:
print(i)
for j in range(num_repeats):
start = time.time()
ga = StandardGeneticAlgorithm(2000, 1500, 250, gap)
fit = FixedIterationTrainer(ga, i)
fit.train()
end = time.time()
ga_results.append(ef.value(ga.getOptimal()))
print "GA Inverse of Distance: " + str(ef.value(ga.getOptimal()))
ga_times.append(end - start)
# print "Route:"
# path = []
# for x in range(0,N):
# path.append(ga.getOptimal().getDiscrete(x))
# print path
# for mimic we use a sort encoding
ef = TravelingSalesmanSortEvaluationFunction(points)
fill = [N] * N
ranges = array('i', fill)
odd = DiscreteUniformDistribution(ranges)
df = DiscreteDependencyTree(.1, ranges)
pop = GenericProbabilisticOptimizationProblem(ef, odd, df)
mimic_results = []
mimic_times = []
for i in iters[0:6]:
print(i)
for j in range(num_repeats):
start = time.time()
mimic = MIMIC(500, 100, pop)
fit = FixedIterationTrainer(mimic, i)
fit.train()
end = time.time()
mimic_results.append(ef.value(mimic.getOptimal()))
print "MIMIC Inverse of Distance: " + str(
ef.value(mimic.getOptimal()))
# print "Route:"
# path = []
# optimal = mimic.getOptimal()
# fill = [0] * optimal.size()
# ddata = array('d', fill)
# for i in range(0,len(ddata)):
# ddata[i] = optimal.getContinuous(i)
# order = ABAGAILArrays.indices(optimal.size())
# ABAGAILArrays.quicksort(ddata, order)
# print order
mimic_times.append(end - start)
with open('travelingsalesman.csv', 'w') as csvfile:
writer = csv.writer(csvfile)
writer.writerow(rhc_results)
writer.writerow(rhc_times)
writer.writerow(sa_results)
writer.writerow(sa_times)
writer.writerow(ga_results)
writer.writerow(ga_times)
writer.writerow(mimic_results)
writer.writerow(mimic_times)
return rhc_results, rhc_times, sa_results, sa_times, ga_results, ga_times, mimic_results, mimic_times
hcp = GenericHillClimbingProblem(ef, odd, nf)
gap = GenericGeneticAlgorithmProblem(ef, odd, mf, cf)
ef2 = TravelingSalesmanSortEvaluationFunction(points)
fill = [N] * N
ranges = array('i', fill)
odd2 = DiscreteUniformDistribution(ranges)
df = DiscreteDependencyTree(.1, ranges)
pop = GenericProbabilisticOptimizationProblem(ef2, odd2, df)
# Algorithm declaration
rhc = RandomizedHillClimbing(hcp)
sa = SimulatedAnnealing(SA_TEMPERATURE, SA_COOLING_FACTOR, hcp)
ga = StandardGeneticAlgorithm(GA_POPULATION, GA_CROSSOVER, GA_MUTATION,
gap)
mimic = MIMIC(MIMIC_SAMPLES, MIMIC_TO_KEEP, pop)
# Trainer declaration
fit_rhc = FixedIterationTrainer(rhc, current_iteration_count)
fit_sa = FixedIterationTrainer(sa, current_iteration_count)
fit_ga = FixedIterationTrainer(ga, current_iteration_count)
fit_mimic = FixedIterationTrainer(mimic, current_iteration_count)
print("Computing for %d iterations" % current_iteration_count)
# Fitting
start_rhc = time.time()
fit_rhc.train()
end_rhc = time.time()
start_sa = time.time()
runs : number of runs to average over
"""
fill = [2] * N
ranges = array('i', fill)
ef = CountOnesEvaluationFunction()
odd = DiscreteUniformDistribution(ranges)
nf = DiscreteChangeOneNeighbor(ranges)
mf = DiscreteChangeOneMutation(ranges)
cf = SingleCrossOver()
df = DiscreteDependencyTree(.1, ranges)
hcp = GenericHillClimbingProblem(ef, odd, nf)
gap = GenericGeneticAlgorithmProblem(ef, odd, mf, cf)
pop = GenericProbabilisticOptimizationProblem(ef, odd, df)
t0 = time.time()
calls = []
results = []
for _ in range(runs):
mimic = MIMIC(samples, tokeep, pop)
fit = FixedIterationTrainer(mimic, 100)
fitness = fit.train()
results.append(ef.value(mimic.getOptimal()))
calls.append(ef.getTotalCalls())
ef.clearCount()
print "MIMIC, average results, " + str(sum(results)/float(runs)) + ", countones_MIMIC-%d-%d-%d.txt" % (N, samples, tokeep)
print "MIMIC, average feval calls , " + str(sum(calls)/float(runs)) + ", countones_MIMIC-%d-%d-%d.txt" % (N, samples, tokeep)
t1 = time.time() - t0
print "MIMIC, average time , " + str(t1/float(runs)) + ", countones_MIMIC-%d-%d-%d.txt" % (N, samples, tokeep)
