def experience_multiple_pretraining_geometry(config):
needed_params=['learning_params','hidden_geometry','pretraining_geometries','init_weights','save_init_weights','displayed_examples','displayed_epochs','outfolder']
used_config={}
for aParam in needed_params:
if not( aParam in config.keys()):
raise ValueError("Experience configuration does not contain %s parameter"%(aParam))
if aParam!='init_weights':
used_config[aParam]=config[aParam]
elif not (config[aParam] is None):
used_config['init_weights']= []
learning_params=config['learning_params']
hidden_geometry=config['hidden_geometry']
pretraining_geometries=config['pretraining_geometries']
init_weights=config['init_weights']
save_init_weights=config['save_init_weights']
displayed_examples=config['displayed_examples']
displayed_epochs=config['displayed_epochs']
outfolder=config['outfolder']
absoutfolder=os.path.abspath(outfolder)
if not os.path.exists(absoutfolder):
os.mkdir(absoutfolder)
mystdoutpath=os.path.join(absoutfolder,"experience.log")
print('switch stdout to %s'%(mystdoutpath,))
mystdout=open(mystdoutpath,'wb')
sys.stdout=mystdout
print '... loading training data'
train_set = sio.loadmat('data/fixed/train.mat')
x_train = np.asarray(train_set['x_train'], dtype=theano.config.floatX) # We convert to float32 to
y_train = np.asarray(train_set['y_train'], dtype=theano.config.floatX) # compute on GPUs with CUDA
print '... loading test data'
test_set = sio.loadmat('data/fixed/test.mat')
x_test = np.asarray(test_set['x_test'], dtype=theano.config.floatX) # We convert to float32 to
y_test = np.asarray(test_set['y_test'], dtype=theano.config.floatX) # compute on GPUs with CUDA
nApp = x_train.shape[0] # number of training examples
nTest = x_test.shape[0] # number of training examples
nFeats = x_train.shape[1] # number of pixels per image
xSize = int(np.sqrt(nFeats)) # with of a square image
nInputs=nFeats
nOutputs=nFeats
geometry=[nFeats]+config['hidden_geometry']+[nFeats]
nLayers=len(geometry)-1
parameters=init_weights
if not (parameters is None) and save_init_weights:
pickle.dump(parameters,open(os.path.join(absoutfolder,"starting_params.pck"),'w'),protocol=-1)
print('... saving used configuration')
json.dump(used_config,open(os.path.join(absoutfolder,"configuration.json"),'wb'),indent=2)
results={}
for phase,xdata,ydata in [['train',x_train,y_train],['test',x_test,y_test]]:
for ex in displayed_examples:
x_orig = np.reshape(xdata[ex:ex+1], (xSize, xSize), 'F')
data2greyimg(os.path.join(absoutfolder,"%s_ex_%03d_input.png"%(phase,ex,)),x_orig)
y_true = np.reshape(ydata[ex:ex+1], (xSize, xSize), 'F')
data2greyimg(os.path.join(absoutfolder,"%s_ex_%03d_target.png"%(phase,ex,)),y_true)
for pretraining_geometry in pretraining_geometries:
expname="I_%d_L_%d_O_%d"%(pretraining_geometry['nInputLayers'],nLayers-pretraining_geometry['nInputLayers']-pretraining_geometry['nOutputLayers'],pretraining_geometry['nOutputLayers'])
current_learning_params=dict(learning_params)
if (learning_params['link_pretraining']) and (pretraining_geometry['nInputLayers']!=0) and (pretraining_geometry['nOutputLayers']!=0):
current_learning_params['link_pretraining'] = True
else:
current_learning_params['link_pretraining'] = False
print '... building and learning a network %s'%(expname,)
nn = MyPretrainedMLP(geometry, outputActivation=crino.module.Sigmoid,**pretraining_geometry)
nn.setTestSet(x_test,y_test)
# set the epochs where we will have a particular look at
nn.setDisplayedEpochs(displayed_epochs)
nn.setInputs(T.matrix('x'), nFeats)
nn.prepare()
nn.setCriterion(MeanSquareError(nn.getOutputs(), T.matrix('y')))
if parameters is None:
parameters=nn.getParameters()
if save_init_weights:
pickle.dump(parameters,open(os.path.join(absoutfolder,"starting_params.pck"),'w'),protocol=-1)
else:
nn.setParameters(parameters)
delta = nn.train(x_train, y_train, **current_learning_params)
print '... learning lasted %s (s) ' % (delta)
results[expname]={
'I':pretraining_geometry['nInputLayers'],
'L':nLayers-pretraining_geometry['nInputLayers']-pretraining_geometry['nOutputLayers'],
'O':pretraining_geometry['nOutputLayers'],
'train_criterion':nn.finetune_history[-1],
'train_history':nn.finetune_history,
'train_full_history':nn.finetune_full_history,
'test_criterion': nn.test_criterion_history[-1],
'test_history':nn.test_criterion_history,
}
pickle.dump(nn.getParameters(),open(os.path.join(absoutfolder,"%s_params.pck"%(expname,)),'w'),protocol=-1)
print("RESULT %s: train: %f test: %f"%(expname,nn.finetune_history[-1],nn.test_criterion_history[-1]))
for phase,xdata,ydata,history in [
['train',x_train,y_train,nn.app_forward_history],
['test',x_test,y_test,nn.test_forward_history]]:
for ex in displayed_examples:
for epoch,forward in history:
y_estim = np.reshape(forward[ex:ex+1], (xSize, xSize), 'F')
data2greyimg(os.path.join(absoutfolder,"%s_%s_ex_%03d_estim_%03d.png"%(expname,phase,ex,epoch+1)),y_estim)
def experience_multiple_pretraining_geometry_and_valid(config):
needed_params=['learning_params','hidden_geometry','pretraining_geometries','init_weights','save_init_weights','displayed_examples','displayed_epochs','outfolder','valid_threshold']
used_config={}
for aParam in needed_params:
if not( aParam in config.keys()):
raise ValueError("Experience configuration does not contain %s parameter"%(aParam))
if aParam!='init_weights':
used_config[aParam]=config[aParam]
elif not (config[aParam] is None):
used_config['init_weights']= []
learning_params=config['learning_params']
hidden_geometry=config['hidden_geometry']
pretraining_geometries=config['pretraining_geometries']
init_weights=config['init_weights']
save_init_weights=config['save_init_weights']
displayed_examples=config['displayed_examples']
displayed_epochs=config['displayed_epochs']
outfolder=config['outfolder']
valid_threshold=config['valid_threshold']
absoutfolder=os.path.abspath(outfolder)
if not os.path.exists(absoutfolder):
os.mkdir(absoutfolder)
mystdoutpath=os.path.join(absoutfolder,"experience.log")
print('switch stdout to %s'%(mystdoutpath,))
mystdout=open(mystdoutpath,'wb')
sys.stdout=mystdout
print '... loading training data'
train_set = sio.loadmat('data/fixed/train.mat')
x_train = np.asarray(train_set['x_train'], dtype=theano.config.floatX) # We convert to float32 to
y_train = np.asarray(train_set['y_train'], dtype=theano.config.floatX) # compute on GPUs with CUDA
print '... loading valid data'
valid_set = sio.loadmat('data/fixed/valid.mat')
x_valid = np.asarray(valid_set['x_valid'], dtype=theano.config.floatX) # We convert to float32 to
y_valid = np.asarray(valid_set['y_valid'], dtype=theano.config.floatX) # compute on GPUs with CUDA
print '... loading test data'
test_set = sio.loadmat('data/fixed/test.mat')
x_test = np.asarray(test_set['x_test'], dtype=theano.config.floatX) # We convert to float32 to
y_test = np.asarray(test_set['y_test'], dtype=theano.config.floatX) # compute on GPUs with CUDA
nApp = x_train.shape[0] # number of training examples
nTest = x_test.shape[0] # number of training examples
nFeats = x_train.shape[1] # number of pixels per image
xSize = int(np.sqrt(nFeats)) # with of a square image
nInputs=nFeats
nOutputs=nFeats
geometry=[nFeats]+config['hidden_geometry']+[nFeats]
nLayers=len(geometry)-1
parameters=init_weights
if not (parameters is None) and save_init_weights:
pickle.dump(parameters,open(os.path.join(absoutfolder,"starting_params.pck"),'w'),protocol=-1)
print('... saving used configuration')
json.dump(used_config,open(os.path.join(absoutfolder,"configuration.json"),'wb'),indent=2)
results={}
for phase,xdata,ydata in [['train',x_train,y_train],['test',x_test,y_test]]:
for ex in displayed_examples:
x_orig = np.reshape(xdata[ex:ex+1], (xSize, xSize), 'F')
data2greyimg(os.path.join(absoutfolder,"%s_ex_%03d_input.png"%(phase,ex,)),x_orig)
y_true = np.reshape(ydata[ex:ex+1], (xSize, xSize), 'F')
data2greyimg(os.path.join(absoutfolder,"%s_ex_%03d_target.png"%(phase,ex,)),y_true)
for pretraining_geometry in pretraining_geometries:
expname="I_%d_L_%d_O_%d"%(pretraining_geometry['nInputLayers'],nLayers-pretraining_geometry['nInputLayers']-pretraining_geometry['nOutputLayers'],pretraining_geometry['nOutputLayers'])
current_learning_params=dict(learning_params)
if (learning_params['link_pretraining']) and (pretraining_geometry['nInputLayers']!=0) and (pretraining_geometry['nOutputLayers']!=0):
current_learning_params['link_pretraining'] = True
else:
current_learning_params['link_pretraining'] = False
print '... building and learning a network %s'%(expname,)
nn = MyValidPretrainedMLP(geometry, outputActivation=crino.module.Sigmoid,**pretraining_geometry)
nn.setValidSet(x_valid,y_valid)
nn.setTestSet(x_test,y_test)
nn.setValidThreshold(valid_threshold)
# set the epochs where we will have a particular look at
nn.setDisplayedEpochs(displayed_epochs)
nn.setInputs(T.matrix('x'), nFeats)
nn.prepare()
nn.setCriterion(MeanSquareError(nn.getOutputs(), T.matrix('y')))
if parameters is None:
parameters=nn.getParameters()
if save_init_weights:
pickle.dump(parameters,open(os.path.join(absoutfolder,"starting_params.pck"),'w'),protocol=-1)
else:
nn.setParameters(parameters)
delta = nn.train(x_train, y_train, **current_learning_params)
print '... learning lasted %s (s) ' % (delta)
print('... performing test criterion')
test_criterion=nn.testCriterionFunction()
results[expname]={
'I':pretraining_geometry['nInputLayers'],
'L':nLayers-pretraining_geometry['nInputLayers']-pretraining_geometry['nOutputLayers'],
'O':pretraining_geometry['nOutputLayers'],
'train_criterion':nn.finetune_history[-1],
'train_history':nn.finetune_history,
'train_full_history':nn.finetune_full_history,
'valid_criterion': nn.valid_criterion_history[-1],
'valid_history':nn.valid_criterion_history,
'test_criterion': test_criterion,
'last_epoch': nn.finetune_full_history[-1][0],
'first_hidden_representation': hidden_geometry[0]
}
pickle.dump(nn.getParameters(),open(os.path.join(absoutfolder,"%s_params.pck"%(expname,)),'w'),protocol=-1)
#print(results[expname])
print("RESULT %s: train: %f valid: %f test: %f learning epochs %d"%(expname,results[expname]['train_criterion'],results[expname]['valid_criterion'],results[expname]['test_criterion'],results[expname]['last_epoch']+1))
print("... saving figures")
for phase,xdata,ydata,history in [
['train',x_train,y_train,nn.app_forward_history],
['valid',x_valid,y_valid,nn.valid_forward_history]]:
for ex in displayed_examples:
for epoch,forward in history:
y_estim = np.reshape(forward[ex:ex+1], (xSize, xSize), 'F')
data2greyimg(os.path.join(absoutfolder,"%s_%s_ex_%03d_estim_%03d.png"%(expname,phase,ex,epoch+1)),y_estim)
test_forward=nn.testForwardFunction()
for ex in displayed_examples:
y_estim = np.reshape(test_forward[ex:ex+1], (xSize, xSize), 'F')
data2greyimg(os.path.join(absoutfolder,"%s_%s_ex_%03d_estim_%03d.png"%(expname,'test',ex,results[expname]['last_epoch']+1)),y_estim)
plt.close('all')
plt.figure(1)
plt.plot(nn.valid_criterion_history)
plt.ylabel('criterion')
plt.xlabel('epochs')
plt.savefig(os.path.join(absoutfolder,"%s_valid_criterion.pdf"%(expname,)))
plt.close(1)
print("... saving results")
pickle.dump(results,open(os.path.join(absoutfolder,'results.pck'),'w'),protocol=-1)
table=[["Units","Input Pretrained Layers","Link Layers","Output Pretrained Layers", "Epoch","Train", "Valid"]]
for expname in results.keys():
displayed_epochs_before_last=filter(lambda e:e<=results[expname]['last_epoch'],displayed_epochs)
for epoch in displayed_epochs_before_last:
table.append([results[expname]['first_hidden_representation'],results[expname]['I'],results[expname]['L'],results[expname]['O'],epoch,results[expname]['train_history'][epoch],results[expname]['valid_history'][epoch]])
table.append([results[expname]['first_hidden_representation'],results[expname]['I'],results[expname]['L'],results[expname]['O'],
results[expname]['last_epoch'],
results[expname]['train_criterion'],results[expname]['valid_criterion'],results[expname]['test_criterion']])
writer=csv.writer(open(os.path.join(absoutfolder,'intremediateresults.csv'),'wb'),delimiter='\t')
for row in table:
writer.writerow(row)
table=[["Units","Input Pretrained Layers","Link Layers","Output Pretrained Layers", "Epoch","Train", "Valid","Test"]]
for expname in results.keys():
table.append([results[expname]['first_hidden_representation'],results[expname]['I'],results[expname]['L'],results[expname]['O'],
results[expname]['last_epoch'],
results[expname]['train_criterion'],results[expname]['valid_criterion'],results[expname]['test_criterion']])
writer=csv.writer(open(os.path.join(absoutfolder,'finalresults.csv'),'wb'),delimiter='\t')
for row in table:
writer.writerow(row)
sys.stdout=sys.__stdout__
print('reverts stdout to console')
