def train(model, train_splits_batches, valid_splits_batches, test_splits_batches, normalizer,
model_params, parameters, config_folder, start_time_train, logger_train):
DEBUG = parameters["debug"]
SUMMARIZE=DEBUG["summarize"]
# Build DEBUG dict
if DEBUG["save_measures"]:
DEBUG["save_measures"] = config_folder+"/save_measures"
# Time information used
time_limit = parameters['walltime'] * 3600 - 30*60 # walltime - 30 minutes in seconds
# Reset graph before starting training
tf.reset_default_graph()
###### PETIT TEST VALIDATION
# Use same validation and train set
# piano_valid, orch_valid, valid_index = piano_train, orch_train, train_index
which_trainer = model.trainer()
# Save it for generation. SO UGLY
with open(os.path.join(config_folder, 'which_trainer'), 'w') as ff:
ff.write(which_trainer)
trainer = import_trainer(which_trainer, model_params, parameters)
# Flag to know if the model has to be trained or not
model_optimize = model.optimize()
############################################################
# Display informations about the models
num_parameters = model_statistics.count_parameters(tf.get_default_graph())
logger_train.info('** Num trainable parameters : {}'.format(num_parameters))
with open(os.path.join(config_folder, 'num_parameters.txt'), 'w') as ff:
ff.write("{:d}".format(num_parameters))
############################################################
# Training
logger_train.info("#" * 60)
logger_train.info("#### Training")
epoch = 0
OVERFITTING = False
TIME_LIMIT = False
# Train error
loss_tab = np.zeros(max(1, parameters['max_iter']))
# Select criteria
overfitting_measure = parameters["overfitting_measure"]
save_measures = parameters['save_measures']
# Short-term validation error
valid_tabs = {
'loss': np.zeros(max(1, parameters['max_iter'])),
'accuracy': np.zeros(max(1, parameters['max_iter'])),
'precision': np.zeros(max(1, parameters['max_iter'])),
'recall': np.zeros(max(1, parameters['max_iter'])),
'true_accuracy': np.zeros(max(1, parameters['max_iter'])),
'f_score': np.zeros(max(1, parameters['max_iter'])),
'Xent': np.zeros(max(1, parameters['max_iter']))
}
# Best epoch for each measure
best_epoch = {
'loss': 0,
'accuracy': 0,
'precision': 0,
'recall': 0,
'true_accuracy': 0,
'f_score': 0,
'Xent': 0
}
# Sampled preds measures
valid_tabs_sampled = {
'loss': np.zeros(max(1, parameters['max_iter'])),
'accuracy': np.zeros(max(1, parameters['max_iter'])),
'precision': np.zeros(max(1, parameters['max_iter'])),
'recall': np.zeros(max(1, parameters['max_iter'])),
'true_accuracy': np.zeros(max(1, parameters['max_iter'])),
'f_score': np.zeros(max(1, parameters['max_iter'])),
'Xent': np.zeros(max(1, parameters['max_iter']))
}
# Long-term validation error
valid_tabs_LR = {
'loss': np.zeros(max(1, parameters['max_iter'])),
'accuracy': np.zeros(max(1, parameters['max_iter'])),
'precision': np.zeros(max(1, parameters['max_iter'])),
'recall': np.zeros(max(1, parameters['max_iter'])),
'true_accuracy': np.zeros(max(1, parameters['max_iter'])),
'f_score': np.zeros(max(1, parameters['max_iter'])),
'Xent': np.zeros(max(1, parameters['max_iter']))
}
# Best epoch for each measure
best_epoch_LR = {
'loss': 0,
'accuracy': 0,
'precision': 0,
'recall': 0,
'true_accuracy': 0,
'f_score': 0,
'Xent': 0
}
### Timing file
# open('timing', 'w').close()
if parameters['memory_gpu']:
# This apparently does not work
configSession = tf.ConfigProto()
configSession.gpu_options.per_process_gpu_memory_fraction = parameters['memory_gpu']
else:
configSession = None
with tf.Session(config=configSession) as sess:
# Only for models with shared weights
model.init_weights()
##############################
# Create PH and nodes
if parameters['pretrained_model'] is None:
logger_train.info((u'#### Graph'))
start_time_building_graph = time.time()
trainer.build_variables_nodes(model, parameters)
trainer.build_preds_nodes(model)
trainer.build_loss_nodes(model, parameters)
trainer.build_train_step_node(model, config.optimizer())
trainer.save_nodes(model)
time_building_graph = time.time() - start_time_building_graph
logger_train.info("TTT : Building the graph took {0:.2f}s".format(time_building_graph))
else:
logger_train.info((u'#### Graph'))
start_time_building_graph = time.time()
trainer.load_pretrained_model(parameters['pretrained_model'])
time_building_graph = time.time() - start_time_building_graph
logger_train.info("TTT : Loading pretrained model took {0:.2f}s".format(time_building_graph))
if SUMMARIZE:
tf.summary.scalar('loss', trainer.loss)
##############################
summarize_dict = {}
if SUMMARIZE:
merged_node = tf.summary.merge_all()
train_writer = tf.summary.FileWriter(config_folder + '/summary', sess.graph)
train_writer.add_graph(tf.get_default_graph())
else:
merged_node = None
summarize_dict['bool'] = SUMMARIZE
summarize_dict['merged_node'] = merged_node
if model.is_keras():
K.set_session(sess)
# Initialize weights
if parameters['pretrained_model']:
trainer.saver.restore(sess, parameters['pretrained_model'] + '/model')
else:
sess.run(tf.global_variables_initializer())
# if DEBUG:
# sess = tf_debug.LocalCLIDebugWrapperSession(sess)
# sess.add_tensor_filter("has_inf_or_nan", tf_debug.has_inf_or_nan)
N_matrix_files = len(train_splits_batches)
#######################################
# Load first matrix
#######################################
load_data_start = time.time()
pool = ThreadPool(processes=1)
async_train = pool.apply_async(async_load_mat, (normalizer, train_splits_batches[0]['chunks_folders'], parameters))
matrices_from_thread = async_train.get()
load_data_time = time.time() - load_data_start
logger_train.info("Load the first matrix time : " + str(load_data_time))
# For dumb baseline models like random or repeat which don't need training step optimization
if model_optimize == False:
# WARNING : first validation matrix is not necessarily the same as the first train matrix
async_test = pool.apply_async(async_load_mat, (normalizer, test_splits_batches[0]['chunks_folders'], parameters))
init_matrices_test = async_test.get()
test_results, test_results_sampled, test_long_range_results, _, _ = validate(trainer, sess,
init_matrices_test, test_splits_batches,
normalizer, parameters,
logger_train)
training_utils.mean_and_store_results(test_results, valid_tabs, 0)
training_utils.mean_and_store_results(test_results_sampled, valid_tabs_sampled, 0)
training_utils.mean_and_store_results(test_long_range_results, valid_tabs_LR, 0)
return training_utils.remove_tail_training_curves(valid_tabs, 1), {}, best_epoch, \
training_utils.remove_tail_training_curves(valid_tabs_sampled, 1), {}, best_epoch_sampled, \
training_utils.remove_tail_training_curves(valid_tabs_LR, 1), {}, best_epoch_LR
# Training iteration
while (not OVERFITTING and not TIME_LIMIT
and epoch != parameters['max_iter']):
start_time_epoch = time.time()
trainer.DEBUG['epoch'] = epoch
train_cost_epoch = []
sparse_loss_epoch = []
train_time = time.time()
for file_ind_CURRENT in range(N_matrix_files):
#######################################
# Get indices and matrices to load
#######################################
# ttt=time.time()
# We train on the current matrix
train_index = train_splits_batches[file_ind_CURRENT]['batches']
# But load the one next one
file_ind_NEXT = (file_ind_CURRENT+1) % N_matrix_files
next_chunks = train_splits_batches[file_ind_NEXT]['chunks_folders']
# ttt=time.time()-ttt
# with open('timing', 'a') as ff:
# ff.write("Get next chunks infos: {:.4f}\n".format(ttt))
#######################################
# Load matrix thread
#######################################
# ttt=time.time()
async_train = pool.apply_async(async_load_mat, (normalizer, next_chunks, parameters))
# ttt=time.time()-ttt
# with open('timing', 'a') as ff:
# ff.write("Launch thread data: {:.4f}\n".format(ttt))
# ttt=time.time()
piano_input, orch_transformed, duration_piano, mask_orch = matrices_from_thread
# ttt=time.time()-ttt
# with open('timing', 'a') as ff:
# ff.write("Unpack matrices: {:.4f}\n".format(ttt))
#######################################
# Train
#######################################
# ttt=time.time()
for batch_index in train_index:
# ttt=time.time()
loss_batch, _, debug_outputs, summary = trainer.training_step(sess, batch_index, piano_input, orch_transformed, duration_piano, mask_orch, summarize_dict)
# ttt=time.time()-ttt
# with open('timing', 'a') as ff:
# ff.write("Sess Run: {:.4f}\n".format(ttt))
# Keep track of cost
train_cost_epoch.append(loss_batch)
sparse_loss_batch = debug_outputs["sparse_loss_batch"]
sparse_loss_epoch.append(sparse_loss_batch)
# ttt=time.time()-ttt
# with open('timing', 'a') as ff:
# ff.write("Train over a batch: {:.4f}\n".format(ttt))
#######################################
# New matrices from thread
#######################################
# ttt=time.time()
del(matrices_from_thread)
# ttt=time.time()-ttt
# with open('timing', 'a') as ff:
# ff.write("Delete matrices: {:.4f}\n".format(ttt))
# ttt=time.time()
matrices_from_thread = async_train.get()
# ttt=time.time()-ttt
# with open('timing', 'a') as ff:
# ff.write("Get next chunk from thread: {:.4f}\n##############\n".format(ttt))
train_time = time.time() - train_time
logger_train.info("Training time : {}".format(train_time))
###
# DEBUG
if trainer.DEBUG["plot_weights"]:
# weight_folder=config_folder+"/weights/"+str(epoch)
weight_folder=config_folder+"/weights"
plot_weights.plot_weights(sess, weight_folder)
#
###
# WARNING : first validation matrix is not necessarily the same as the first train matrix
# So now that it's here, parallelization is absolutely useless....
async_valid = pool.apply_async(async_load_mat, (normalizer, valid_splits_batches[0]['chunks_folders'], parameters))
if SUMMARIZE:
if (epoch<5) or (epoch%10==0):
# Note that summarize here only look at the variables after the last batch of the epoch
# If you want to look at all the batches, include it in
train_writer.add_summary(summary, epoch)
mean_loss = np.mean(train_cost_epoch)
loss_tab[epoch] = mean_loss
#######################################
# Validate
#######################################
valid_time = time.time()
init_matrices_validation = async_valid.get()
# Create DEBUG folders
if trainer.DEBUG["plot_nade_ordering_preds"]:
AAA = config_folder+"/DEBUG/preds_nade/"+str(epoch)
trainer.DEBUG["plot_nade_ordering_preds"] = AAA
os.makedirs(AAA)
if trainer.DEBUG["save_accuracy_along_sampling"]:
AAA = config_folder+"/DEBUG/accuracy_along_sampling/"+str(epoch)
trainer.DEBUG["save_accuracy_along_sampling"] = AAA
os.makedirs(AAA)
if trainer.DEBUG["salience_embedding"]:
AAA = config_folder+"/DEBUG/salience_embeddings/"+str(epoch)
trainer.DEBUG["salience_embedding"] = AAA
os.makedirs(AAA)
valid_results, valid_results_sampled, valid_long_range_results, preds_val, truth_val = \
validate(trainer, sess,
init_matrices_validation, valid_splits_batches,
normalizer, parameters,
logger_train)
valid_time = time.time() - valid_time
logger_train.info("Validation time : {}".format(valid_time))
training_utils.mean_and_store_results(valid_results, valid_tabs, epoch)
training_utils.mean_and_store_results(valid_results_sampled, valid_tabs_sampled, epoch)
training_utils.mean_and_store_results(valid_long_range_results, valid_tabs_LR, epoch)
end_time_epoch = time.time()
#######################################
# Overfitting ?
if epoch >= parameters['min_number_iteration']:
# Choose short/long range and the measure
OVERFITTING = early_stopping.up_criterion(valid_tabs[overfitting_measure], epoch, parameters["number_strips"], parameters["validation_order"])
if not OVERFITTING:
# Also check for NaN
OVERFITTING = early_stopping.check_for_nan(valid_tabs, save_measures, max_nan=3)
#######################################
#######################################
# Monitor time (guillimin walltime)
if (time.time() - start_time_train) > time_limit:
TIME_LIMIT = True
#######################################
#######################################
# Log training
#######################################
logger_train.info("############################################################")
logger_train.info('Epoch : {} , Training loss : {} , Validation loss : {} \n \
Validation accuracy : {:.3f} ; {:.3f} \n \
Precision : {:.3f} ; {:.3f} \n \
Recall : {:.3f} ; {:.3f} \n \
Xent : {:.6f} ; {:.3f} \n \
Sparse_loss : {:.3f}'
.format(epoch, mean_loss,
valid_tabs['loss'][epoch],
valid_tabs['accuracy'][epoch], valid_tabs_sampled['accuracy'][epoch],
valid_tabs['precision'][epoch], valid_tabs_sampled['precision'][epoch],
valid_tabs['recall'][epoch], valid_tabs_sampled['recall'][epoch],
valid_tabs['Xent'][epoch], valid_tabs_sampled['Xent'][epoch],
np.mean(sparse_loss_epoch)))
logger_train.info('Time : {}'
.format(end_time_epoch - start_time_epoch))
#######################################
# Best model ?
# Xent criterion
start_time_saving = time.time()
for measure_name, measure_curve in valid_tabs.items():
best_measure_so_far = measure_curve[best_epoch[measure_name]]
measure_for_this_epoch = measure_curve[epoch]
if (measure_for_this_epoch <= best_measure_so_far) or (epoch==0):
if measure_name in save_measures:
trainer.saver.save(sess, config_folder + "/model_" + measure_name + "/model")
best_epoch[measure_name] = epoch
#######################################
# DEBUG
# Save numpy arrays of measures values
if trainer.DEBUG["save_measures"]:
if os.path.isdir(trainer.DEBUG["save_measures"]):
shutil.rmtree(trainer.DEBUG["save_measures"])
os.makedirs(trainer.DEBUG["save_measures"])
for measure_name, measure_tab in valid_results.items():
np.save(os.path.join(trainer.DEBUG["save_measures"], measure_name + '.npy'), measure_tab[:2000])
np.save(os.path.join(trainer.DEBUG["save_measures"], 'preds.npy'), np.asarray(preds_val[:2000]))
np.save(os.path.join(trainer.DEBUG["save_measures"], 'truth.npy'), np.asarray(truth_val[:2000]))
#######################################
end_time_saving = time.time()
logger_train.info('Saving time : {:.3f}'.format(end_time_saving-start_time_saving))
#######################################
if OVERFITTING:
logger_train.info('OVERFITTING !!')
if TIME_LIMIT:
logger_train.info('TIME OUT !!')
#######################################
# Epoch +1
#######################################
epoch += 1
#######################################
# Test
#######################################
test_time = time.time()
async_test = pool.apply_async(async_load_mat, (normalizer, test_splits_batches[0]['chunks_folders'], parameters))
init_matrices_test = async_test.get()
test_results, test_results_sampled, test_long_range_results, preds_test, truth_test = \
validate(trainer, sess,
init_matrices_test, test_splits_batches,
normalizer, parameters,
logger_train)
test_time = time.time() - test_time
logger_train.info("Test time : {}".format(test_time))
test_tab={}
test_tab_sampled={}
test_tab_LR={}
training_utils.mean_and_store_results(test_results, test_tab, None)
training_utils.mean_and_store_results(test_results_sampled, test_tab_sampled, None)
training_utils.mean_and_store_results(test_long_range_results, test_tab_LR, None)
logger_train.info("############################################################")
logger_train.info("""## Test Scores
Loss : {}
Validation accuracy : {:.3f} %, precision : {:.3f} %, recall : {:.3f} %
True_accuracy : {:.3f} %, f_score : {:.3f} %, Xent : {:.6f}"""
.format(
test_tab['loss'], test_tab['accuracy'], test_tab['precision'],
test_tab['recall'], test_tab['true_accuracy'], test_tab['f_score'], test_tab['Xent']))
logger_train.info('Time : {}'
.format(test_time))
#######################################
# Close workers' pool
#######################################
pool.close()
pool.join()
return training_utils.remove_tail_training_curves(valid_tabs, epoch), test_tab, best_epoch, \
training_utils.remove_tail_training_curves(valid_tabs_sampled, epoch), test_tab_sampled, best_epoch,\
training_utils.remove_tail_training_curves(valid_tabs_LR, epoch), test_tab_LR, best_epoch_LR
# bias=[v.eval() for v in tf.global_variables() if v.name == "top_layer_prediction/orch_pred/bias:0"][0]
# kernel=[v.eval() for v in tf.global_variables() if v.name == "top_layer_prediction/orch_pred/kernel:0"][0]
def generate_midi(config_folder_fd, config_folder_bd, config_folder_corr,
score_source, save_folder, initialization_type,
number_of_version, duration_gen, num_pass_correct,
logger_generate):
"""This function generate the orchestration of a midi piano score
Parameters
----------
config_folder : str
Absolute path to the configuration folder, i.e. the folder containing the saved model and the results
score_source : str
Either a path to a folder containing two midi files (piano and orchestration) or the path toa piano midi files
number_of_version : int
Number of version generated in a batch manner. Since the generation process involves sampling it might be interesting to generate several versions
duration_gen : int
Length of the generated score (in number of events). Useful for generating only the beginning of the piece.
logger_generate : logger
Instanciation of logging. Can be None
"""
logger_generate.info("#############################################")
logger_generate.info("Orchestrating : " + score_source)
# Load parameters
parameters = pkl.load(
open(config_folder_fd + '/script_parameters.pkl', 'rb'))
model_parameters_fd = pkl.load(
open(config_folder_fd + '/model_params.pkl', 'rb'))
#
parameters_bd = pkl.load(
open(config_folder_bd + '/script_parameters.pkl', 'rb'))
model_parameters_bd = pkl.load(
open(config_folder_bd + '/model_params.pkl', 'rb'))
#
parameters_corr = pkl.load(
open(config_folder_corr + '/script_parameters.pkl', 'rb'))
model_parameters_corr = pkl.load(
open(config_folder_corr + '/model_params.pkl', 'rb'))
assert (model_parameters_fd["temporal_order"]
== model_parameters_bd["temporal_order"]) and (
model_parameters_fd["temporal_order"]
== model_parameters_corr["temporal_order"]
), "The two model have different seed_size"
assert (parameters["quantization"] == parameters_bd["quantization"]) and (
parameters["quantization"] == parameters_corr["quantization"]
), "The two model have different quantization"
assert (parameters["temporal_granularity"]
== parameters_bd["temporal_granularity"]) and (
parameters["temporal_granularity"]
== parameters_corr["temporal_granularity"]
), "The two model have different temporal_granularity"
assert (parameters["instru_mapping"] == parameters_bd["instru_mapping"]
) and (parameters["instru_mapping"]
== parameters_corr["instru_mapping"]
), "The two model have different instru_mapping"
assert (parameters["normalizer"] == parameters_bd["normalizer"]) and (
parameters["normalizer"] == parameters_corr["normalizer"]
), "The two model have different normalizer"
seed_size = max(model_parameters_fd['temporal_order'], 10) - 1
#######################
# Load data
if re.search(r'mid$', score_source):
pr_piano, event_piano, duration_piano, name_piano, pr_orch, instru_orch, duration = generation_utils.load_solo(
score_source, parameters["quantization"],
parameters["binarize_piano"], parameters["temporal_granularity"])
else:
if initialization_type == "seed":
pr_piano, event_piano, duration_piano, name_piano, pr_orch, instru_orch, duration = generation_utils.load_from_pair(
score_source,
parameters["quantization"],
parameters["binarize_piano"],
parameters["binarize_orch"],
parameters["temporal_granularity"],
align_bool=True)
else:
pr_piano, event_piano, duration_piano, name_piano, pr_orch, instru_orch, duration = generation_utils.load_from_pair(
score_source,
parameters["quantization"],
parameters["binarize_piano"],
parameters["binarize_orch"],
parameters["temporal_granularity"],
align_bool=False)
if (duration is None) or (duration < duration_gen):
logger_generate.info("Track too short to be used")
return
########################
########################
# Shorten
# Keep only the beginning of the pieces (let's say a 100 events)
pr_piano = pianoroll_processing.extract_pianoroll_part(
pr_piano, 0, duration_gen)
if parameters["duration_piano"]:
duration_piano = np.asarray(duration_piano[:duration_gen])
else:
duration_piano = None
if parameters["temporal_granularity"] == "event_level":
event_piano = event_piano[:duration_gen]
pr_orch = pianoroll_processing.extract_pianoroll_part(
pr_orch, 0, duration_gen)
########################
########################
# Instanciate piano pianoroll
N_piano = parameters["instru_mapping"]['Piano']['index_max']
pr_piano_gen = np.zeros((duration_gen, N_piano), dtype=np.float32)
pr_piano_gen = build_data_aux.cast_small_pr_into_big_pr(
pr_piano, {}, 0, duration_gen, parameters["instru_mapping"],
pr_piano_gen)
pr_piano_gen_flat = pr_piano_gen.sum(axis=1)
silence_piano = [
e for e in range(duration_gen) if pr_piano_gen_flat[e] == 0
]
########################
########################
# Initialize orchestra pianoroll with orchestra seed (choose one)
N_orchestra = parameters['N_orchestra']
pr_orchestra_truth = np.zeros((duration_gen, N_orchestra),
dtype=np.float32)
pr_orchestra_truth = build_data_aux.cast_small_pr_into_big_pr(
pr_orch, instru_orch, 0, duration_gen, parameters["instru_mapping"],
pr_orchestra_truth)
if initialization_type == "seed":
pr_orchestra_seed = generation_utils.init_with_seed(
pr_orch, number_of_version, seed_size, N_orchestra, instru_orch,
parameters["instru_mapping"])
elif initialization_type == "zeros":
pr_orchestra_seed = generation_utils.init_with_zeros(
number_of_version, seed_size, N_orchestra)
elif initialization_type == "constant":
const_value = 0.1
pr_orchestra_seed = generation_utils.init_with_constant(
number_of_version, seed_size, N_orchestra, const_value)
elif initialization_type == "random":
proba_activation = 0.01
pr_orchestra_seed = generation_utils.init_with_random(
number_of_version, seed_size, N_orchestra, proba_activation)
########################
#######################################
# Embed piano
time_embedding = time.time()
if parameters['embedded_piano']:
# Load model
embedding_path = parameters["embedding_path"]
embedding_model = torch.load(embedding_path, map_location="cpu")
# Build embedding (no need to batch here, len(pr_piano_gen) is sufficiently small)
# Plus no CUDA here because : afradi of mix with TF + possibly very long piano chunks
piano_resize_emb = np.zeros(
(len(pr_piano_gen), 1, 128)) # Embeddings accetp size 128 samples
piano_resize_emb[:, 0, parameters["instru_mapping"]['Piano']
['pitch_min']:parameters["instru_mapping"]['Piano']
['pitch_max']] = pr_piano_gen
piano_resize_emb_TT = torch.tensor(piano_resize_emb)
piano_embedded_TT = embedding_model(piano_resize_emb_TT.float(), 0)
pr_piano_gen_embedded = piano_embedded_TT.numpy()
else:
pr_piano_gen_embedded = pr_piano_gen
time_embedding = time.time() - time_embedding
#######################################
########################
# Inputs' normalization
normalizer = pkl.load(
open(os.path.join(config_folder_fd, 'normalizer.pkl'), 'rb'))
if parameters["embedded_piano"]: # When using embedding, no normalization
pr_piano_gen_norm = pr_piano_gen_embedded
else:
pr_piano_gen_norm = normalizer.transform(pr_piano_gen_embedded)
########################
########################
# Store folder
string = re.split(r'/', name_piano)[-1]
name_track = re.sub('piano_solo.mid', '', string)
generated_folder = save_folder + '/fd_bd_corr_' + initialization_type + '_init/' + name_track
if not os.path.isdir(generated_folder):
os.makedirs(generated_folder)
########################
########################
# Get trainer
with open(os.path.join(config_folder_fd, 'which_trainer'), 'r') as ff:
which_trainer_fd = ff.read()
# Trainer
trainer_fd = import_trainer(which_trainer_fd, model_parameters_fd,
parameters)
#
with open(os.path.join(config_folder_bd, 'which_trainer'), 'r') as ff:
which_trainer_bd = ff.read()
# Trainer
trainer_bd = import_trainer(which_trainer_bd, model_parameters_bd,
parameters)
#
with open(os.path.join(config_folder_corr, 'which_trainer'), 'r') as ff:
which_trainer_corr = ff.read()
# Trainer
trainer_corr = import_trainer(which_trainer_corr, model_parameters_corr,
parameters)
########################
############################################################
# Generate
############################################################
time_generate_0 = time.time()
model_path = 'model_accuracy'
# Forward
pr_orchestra_gen = generate(trainer_fd,
pr_piano_gen_norm,
silence_piano,
duration_piano,
config_folder_fd,
model_path,
pr_orchestra_seed,
batch_size=number_of_version)
prefix_name = 'fd_'
generation_utils.reconstruct_generation(pr_orchestra_gen, event_piano,
generated_folder, prefix_name,
parameters, seed_size)
# Backward
pr_orchestra_seed = pr_orchestra_gen[:, -seed_size:]
pr_orchestra_gen = generate_backward(trainer_bd,
pr_piano_gen_norm,
silence_piano,
duration_piano,
config_folder_bd,
model_path,
pr_orchestra_seed,
batch_size=number_of_version)
prefix_name = 'bd_'
generation_utils.reconstruct_generation(pr_orchestra_gen, event_piano,
generated_folder, prefix_name,
parameters, seed_size)
# Correction
for pass_index in range(num_pass_correct):
pr_orchestra_gen = correct(trainer_corr,
pr_piano_gen_norm,
silence_piano,
duration_piano,
config_folder_corr,
model_path,
pr_orchestra_gen,
batch_size=number_of_version)
generation_utils.reconstruct_generation(pr_orchestra_gen, event_piano,
generated_folder, prefix_name,
parameters, seed_size)
prefix_name = 'corr_' + str(pass_index) + '_'
time_generate_1 = time.time()
logger_generate.info(
'TTT : Generating data took {} seconds'.format(time_generate_1 -
time_generate_0))
############################################################
# Reconstruct and write
############################################################
prefix_name = 'final_'
generation_utils.reconstruct_generation(pr_orchestra_gen, event_piano,
generated_folder, prefix_name,
parameters, seed_size)
generation_utils.reconstruct_original(pr_piano_gen, pr_orchestra_truth,
event_piano, generated_folder,
parameters)
return
def generate_midi(config_folder, score_source, number_of_version, duration_gen,
logger_generate):
"""This function generate the orchestration of a midi piano score
Parameters
----------
config_folder : str
Absolute path to the configuration folder, i.e. the folder containing the saved model and the results
score_source : str
Either a path to a folder containing two midi files (piano and orchestration) or the path toa piano midi files
number_of_version : int
Number of version generated in a batch manner. Since the generation process involves sampling it might be interesting to generate several versions
duration_gen : int
Length of the generated score (in number of events). Useful for generating only the beginning of the piece.
logger_generate : logger
Instanciation of logging. Can be None
"""
logger_generate.info("#############################################")
logger_generate.info("Orchestrating : " + score_source)
############################################################
# Load model, config and data
############################################################
########################
# Load config and model
parameters = pkl.load(open(config_folder + '/script_parameters.pkl', 'rb'))
model_parameters = pkl.load(open(config_folder + '/model_params.pkl',
'rb'))
# Set a minimum seed size, because for very short models you don't event see the beginning
seed_size = max(model_parameters['temporal_order'], 10) - 1
quantization = parameters['quantization']
temporal_granularity = parameters['temporal_granularity']
instru_mapping = parameters['instru_mapping']
########################
#######################
# Load data
if re.search(r'mid$', score_source):
pr_piano, event_piano, duration_piano, name_piano, pr_orch, instru_orch, duration = load_solo(
score_source, quantization, parameters["binarize_piano"],
temporal_granularity)
else:
pr_piano, event_piano, duration_piano, name_piano, pr_orch, instru_orch, duration = load_from_pair(
score_source, quantization, parameters["binarize_piano"],
parameters["binarize_orch"], temporal_granularity)
if (duration is None) or (duration < duration_gen):
logger_generate.info("Track too short to be used")
return
########################
########################
# Shorten
# Keep only the beginning of the pieces (let's say a 100 events)
pr_piano = extract_pianoroll_part(pr_piano, 0, duration_gen)
if parameters["duration_piano"]:
duration_piano = np.asarray(duration_piano[:duration_gen])
else:
duration_piano = None
if parameters["temporal_granularity"] == "event_level":
event_piano = event_piano[:duration_gen]
pr_orch = extract_pianoroll_part(pr_orch, 0, duration_gen)
########################
########################
# Instanciate piano pianoroll
N_piano = instru_mapping['Piano']['index_max']
pr_piano_gen = np.zeros((duration_gen, N_piano), dtype=np.float32)
pr_piano_gen = build_data_aux.cast_small_pr_into_big_pr(
pr_piano, {}, 0, duration_gen, instru_mapping, pr_piano_gen)
pr_piano_gen_flat = pr_piano_gen.sum(axis=1)
silence_piano = [
e for e in range(duration_gen) if pr_piano_gen_flat[e] == 0
]
########################
########################
# Instanciate orchestra pianoroll with orchestra seed
N_orchestra = parameters['N_orchestra']
if pr_orch:
pr_orchestra_gen = np.zeros((seed_size, N_orchestra), dtype=np.float32)
orch_seed_beginning = {k: v[:seed_size] for k, v in pr_orch.items()}
pr_orchestra_gen = build_data_aux.cast_small_pr_into_big_pr(
orch_seed_beginning, instru_orch, 0, seed_size, instru_mapping,
pr_orchestra_gen)
pr_orchestra_truth = np.zeros((duration_gen, N_orchestra),
dtype=np.float32)
pr_orchestra_truth = build_data_aux.cast_small_pr_into_big_pr(
pr_orch, instru_orch, 0, duration_gen, instru_mapping,
pr_orchestra_truth)
else:
pr_orchestra_gen = None
pr_orchestra_truth = None
########################
#######################################
# Embed piano
time_embedding = time.time()
if parameters['embedded_piano']:
# Load model
embedding_path = parameters["embedding_path"]
embedding_model = torch.load(embedding_path, map_location="cpu")
# Build embedding (no need to batch here, len(pr_piano_gen) is sufficiently small)
# Plus no CUDA here because : afradi of mix with TF + possibly very long piano chunks
piano_resize_emb = np.zeros(
(len(pr_piano_gen), 1, 128)) # Embeddings accetp size 128 samples
piano_resize_emb[:, 0, instru_mapping['Piano']['pitch_min']:
instru_mapping['Piano']['pitch_max']] = pr_piano_gen
piano_resize_emb_TT = torch.tensor(piano_resize_emb)
piano_embedded_TT = embedding_model(piano_resize_emb_TT.float(), 0)
pr_piano_gen_embedded = piano_embedded_TT.numpy()
else:
pr_piano_gen_embedded = pr_piano_gen
time_embedding = time.time() - time_embedding
#######################################
########################
# Inputs' normalization
normalizer = pkl.load(
open(os.path.join(config_folder, 'normalizer.pkl'), 'rb'))
if parameters["embedded_piano"]: # When using embedding, no normalization
pr_piano_gen_norm = pr_piano_gen_embedded
else:
pr_piano_gen_norm = normalizer.transform(pr_piano_gen_embedded)
########################
########################
# Store folder
string = re.split(r'/', name_piano)[-1]
name_track = re.sub('piano_solo.mid', '', string)
generated_folder = config_folder + '/generation_reference_example/' + name_track
if not os.path.isdir(generated_folder):
os.makedirs(generated_folder)
########################
########################
# Get trainer
with open(os.path.join(config_folder, 'which_trainer'), 'r') as ff:
which_trainer = ff.read()
# Trainer
trainer = import_trainer(which_trainer, model_parameters, parameters)
########################
############################################################
# Generate
############################################################
time_generate_0 = time.time()
generated_sequences = {}
for measure_name in parameters['save_measures']:
model_path = 'model_' + measure_name
generated_sequences[measure_name] = generate(
trainer,
pr_piano_gen_norm,
silence_piano,
duration_piano,
config_folder,
model_path,
pr_orchestra_gen,
batch_size=number_of_version)
time_generate_1 = time.time()
logger_generate.info(
'TTT : Generating data took {} seconds'.format(time_generate_1 -
time_generate_0))
############################################################
# Reconstruct and write
############################################################
def reconstruct_write_aux(generated_sequences, prefix):
for write_counter in range(generated_sequences.shape[0]):
# To distinguish when seed stop, insert a sustained note
this_seq = generated_sequences[write_counter] * 127
this_seq[:seed_size, 0] = 20
# Reconstruct
if parameters['temporal_granularity'] == 'event_level':
pr_orchestra_rhythm = from_event_to_frame(
this_seq, event_piano)
pr_orchestra_rhythm_I = instrument_reconstruction(
pr_orchestra_rhythm, instru_mapping)
write_path = generated_folder + '/' + prefix + '_' + str(
write_counter) + '_generated_rhythm.mid'
write_midi(pr_orchestra_rhythm_I,
quantization,
write_path,
tempo=80)
pr_orchestra_event = this_seq
pr_orchestra_event_I = instrument_reconstruction(
pr_orchestra_event, instru_mapping)
write_path = generated_folder + '/' + prefix + '_' + str(
write_counter) + '_generated.mid'
write_midi(pr_orchestra_event_I, 1, write_path, tempo=80)
return
for measure_name in parameters["save_measures"]:
reconstruct_write_aux(generated_sequences[measure_name], measure_name)
############################################################
############################################################
if parameters["temporal_granularity"] == 'event_level':
# Write original orchestration and piano scores, but reconstructed version, just to check
A_rhythm = from_event_to_frame(pr_piano_gen, event_piano)
B_rhythm = A_rhythm * 127
piano_reconstructed_rhythm = instrument_reconstruction_piano(
B_rhythm, instru_mapping)
write_path = generated_folder + '/piano_reconstructed_rhythm.mid'
write_midi(piano_reconstructed_rhythm,
quantization,
write_path,
tempo=80)
# Truth
A_rhythm = from_event_to_frame(pr_orchestra_truth, event_piano)
B_rhythm = A_rhythm * 127
orchestra_reconstructed_rhythm = instrument_reconstruction(
B_rhythm, instru_mapping)
write_path = generated_folder + '/orchestra_reconstructed_rhythm.mid'
write_midi(orchestra_reconstructed_rhythm,
quantization,
write_path,
tempo=80)
#
A = pr_piano_gen
B = A * 127
piano_reconstructed = instrument_reconstruction_piano(
B, instru_mapping)
write_path = generated_folder + '/piano_reconstructed.mid'
write_midi(piano_reconstructed, 1, write_path, tempo=80)
#
A = pr_orchestra_truth
B = A * 127
orchestra_reconstructed = instrument_reconstruction(B, instru_mapping)
write_path = generated_folder + '/orchestra_reconstructed.mid'
write_midi(orchestra_reconstructed, 1, write_path, tempo=80)
else:
A = pr_piano_gen
B = A * 127
piano_reconstructed = instrument_reconstruction_piano(
B, instru_mapping)
write_path = generated_folder + '/piano_reconstructed.mid'
write_midi(piano_reconstructed, quantization, write_path, tempo=80)
#
A = pr_orchestra_truth
B = A * 127
orchestra_reconstructed = instrument_reconstruction(B, instru_mapping)
write_path = generated_folder + '/orchestra_reconstructed.mid'
write_midi(orchestra_reconstructed, quantization, write_path, tempo=80)
############################################################
############################################################
return