results.write("-" * len(header) + "\n")
results.close()
EXP_DIR = os.getcwd()
base_path = os.path.join(EXP_DIR, "pars.pkl")
base_path1 = os.path.join(EXP_DIR, "best_pars.pkl")
n_iter = 0
if os.path.isfile(base_path):
with open("pars.pkl", "rb") as tp:
n_iter, best_pars = cp.load(tp)
m.parameters.data[...] = best_pars
for i, info in enumerate(m.powerfit((X, Z), (TX, TZ), stop, pause)):
if info["n_iter"] % n_report != 0:
continue
passed = time.time() - start
losses.append((info["loss"], info["val_loss"]))
info.update(
{
"time": passed,
"mae_train": f_mae(X, train_labels),
"rmse_train": f_rmse(X, train_labels),
"mae_test": f_mae(TX, test_labels),
"rmse_test": f_rmse(TX, test_labels),
}
results = open('result.txt', 'a')
results.write(header + '\n')
results.write('-' * len(header) + '\n')
results.close()
EXP_DIR = os.getcwd()
base_path = os.path.join(EXP_DIR, "pars.pkl")
base_path1 = os.path.join(EXP_DIR, "best_pars.pkl")
n_iter = 0
if os.path.isfile(base_path):
with open('pars.pkl', 'rb') as tp:
n_iter, best_pars = cp.load(tp)
m.parameters.data[...] = best_pars
for i, info in enumerate(m.powerfit((X, Z), (TX, TZ), stop, pause)):
if info['n_iter'] % n_report != 0:
continue
passed = time.time() - start
losses.append((info['loss'], info['val_loss']))
info.update({
'time': passed,
'mae_train': f_mae(X, train_labels),
'rmse_train': f_rmse(X, train_labels),
'mae_test': f_mae(TX, test_labels),
'rmse_test': f_rmse(TX, test_labels)
})
def do_one_eval(X, Z, TX, TZ, test_labels, train_labels, step_rate, momentum, decay, c_wd, counter, opt):
seed = 3453
np.random.seed(seed)
max_passes = 200
batch_size = 25
max_iter = 25000000
n_report = X.shape[0] / batch_size
weights = []
optimizer = 'gd', {'step_rate': step_rate, 'momentum': momentum, 'decay': decay}
stop = climin.stops.AfterNIterations(max_iter)
pause = climin.stops.ModuloNIterations(n_report)
# This defines our NN. Since BayOpt does not support categorical data, we just
# use a fixed hidden layer length and transfer functions.
m = Mlp(2100, [400, 100], 1, X, Z, hidden_transfers=['tanh', 'tanh'], out_transfer='identity', loss='squared',
optimizer=optimizer, batch_size=batch_size, max_iter=max_iter)
#climin.initialize.randomize_normal(m.parameters.data, 0, 1e-3)
# Transform the test data
#TX = m.transformedData(TX)
TX = np.array([TX for _ in range(10)]).mean(axis=0)
losses = []
print 'max iter', max_iter
m.init_weights()
for layer in m.mlp.layers:
weights.append(m.parameters[layer.weights])
weight_decay = ((weights[0]**2).sum()
+ (weights[1]**2).sum()
+ (weights[2]**2).sum())
weight_decay /= m.exprs['inpt'].shape[0]
m.exprs['true_loss'] = m.exprs['loss']
c_wd = c_wd
m.exprs['loss'] = m.exprs['loss'] + c_wd * weight_decay
mae = T.abs_((m.exprs['output'] * np.std(train_labels) + np.mean(train_labels))- m.exprs['target']).mean()
f_mae = m.function(['inpt', 'target'], mae)
rmse = T.sqrt(T.square((m.exprs['output'] * np.std(train_labels) + np.mean(train_labels))- m.exprs['target']).mean())
f_rmse = m.function(['inpt', 'target'], rmse)
start = time.time()
# Set up a nice printout.
keys = '#', 'seconds', 'loss', 'val loss', 'mae_train', 'rmse_train', 'mae_test', 'rmse_test'
max_len = max(len(i) for i in keys)
header = '\t'.join(i for i in keys)
print header
print '-' * len(header)
results = open('result.txt', 'a')
results.write(header + '\n')
results.write('-' * len(header) + '\n')
results.write("%f %f %f %f %s" %(step_rate, momentum, decay, c_wd, opt))
results.write('\n')
results.close()
EXP_DIR = os.getcwd()
base_path = os.path.join(EXP_DIR, "pars_hp_"+opt+str(counter)+".pkl")
n_iter = 0
if os.path.isfile(base_path):
with open("pars_hp_"+opt+str(counter)+".pkl", 'rb') as tp:
print 'am here'
n_iter, best_pars = dill.load(tp)
m.parameters.data[...] = best_pars
for i, info in enumerate(m.powerfit((X, Z), (TX, TZ), stop, pause)):
if info['n_iter'] % n_report != 0:
continue
passed = time.time() - start
if math.isnan(info['loss']) == True:
info.update({'mae_test': f_mae(TX, test_labels)})
n_iter = info['n_iter']
break
losses.append((info['loss'], info['val_loss']))
info.update({
'time': passed,
'mae_train': f_mae(X, train_labels),
'rmse_train': f_rmse(X, train_labels),
'mae_test': f_mae(TX, test_labels),
'rmse_test': f_rmse(TX, test_labels)
})
info['n_iter'] += n_iter
row = '%(n_iter)i\t%(time)g\t%(loss)f\t%(val_loss)f\t%(mae_train)g\t%(rmse_train)g\t%(mae_test)g\t%(rmse_test)g' % info
results = open('result.txt','a')
print row
results.write(row + '\n')
results.close()
with open("pars_hp_"+opt+str(counter)+".pkl", 'wb') as fp:
dill.dump((info['n_iter'], info['best_pars']), fp)
with open("apsis_pars_"+opt+str(counter)+".pkl", 'rb') as fp:
LAss, opt, step_rate, momentum, decay, c_wd, counter, n_iter1, result1 = dill.load(fp)
n_iter1 = info['n_iter']
result1 = info['mae_test']
with open("apsis_pars_"+opt+str(counter)+".pkl", 'wb') as fp:
dill.dump((LAss, opt, step_rate, momentum, decay, c_wd, counter, n_iter1, result1), fp)
return info['mae_test'], info['n_iter']
