def train(teacher_forcing_prob):
#tf.debugging.set_log_device_placement(True)
train_data, test_data, constants = load_dataset()
encoder_input_data, decoder_input_data, decoder_target_data = train_data
# Add slices here to train on only a subset of the data
encoder_input_data = encoder_input_data
decoder_input_data = decoder_input_data
decoder_target_data = decoder_target_data
model = _build_model(constants, teacher_forcing_prob)
model.summary(line_length=200)
l = create_losses(constants['MASK_VALUE'])
o = keras.optimizers.Adam(learning_rate=0.001, beta_1=0.8)
epochs = int(sys.argv[3])
model.compile(optimizer=o, loss=l, loss_weights=LOSS_WEIGHTS)
model_checkpoint_callback = keras.callbacks.ModelCheckpoint(
filepath=MODEL_PATH + '/bigthrush/{epoch:02d}',
save_weights_only=False,
save_freq=150)
model.fit([encoder_input_data, decoder_input_data],
decoder_target_data,
batch_size=64,
epochs=epochs,
validation_split=0.05,
shuffle=True,
verbose=1,
callbacks=[model_checkpoint_callback])
model.save('runmodel')
def train(teacher_forcing_prob):
train_data, test_data, constants = feature_extractors.load_dataset()
encoder_input_data, decoder_input_data, decoder_target_data = train_data
model = _build_model(constants, teacher_forcing_prob)
model.summary(line_length=200)
l = create_losses(constants['MASK_VALUE'])
o = keras.optimizers.Adam(learning_rate=0.001, beta_1=0.8)
epochs = int(sys.argv[3])
model.compile(optimizer=o, loss=l, loss_weights=LOSS_WEIGHTS)
model_checkpoint_callback = keras.callbacks.ModelCheckpoint(
filepath=
'thrush_attn_bidir_32_istermmse_lr001B09_luongattn_big/{epoch:02d}',
save_weights_only=False,
save_freq=150)
model.fit([encoder_input_data, decoder_input_data],
decoder_target_data,
batch_size=128,
epochs=epochs,
validation_split=0.05,
shuffle=True,
verbose=1)
model.save('runmodel2')
def train():
train_data, test_data, constants = feature_extractors.load_dataset()
encoder_input_data, decoder_input_data, decoder_target_data = train_data
# Add slices here to train on only a subset of the data
# encoder_input_data = encoder_input_data[:50]
# decoder_input_data = decoder_input_data[:50]
# decoder_target_data = decoder_target_data[:50]
model = _build_model(constants)
l = create_losses(constants['MASK_VALUE'])
o = keras.optimizers.Adam(learning_rate=0.005, beta_1=0.8)
epochs = int(sys.argv[3])
model.compile(optimizer=o, loss=l)
model_checkpoint_callback = keras.callbacks.ModelCheckpoint(
filepath=f'thrush_attn_bidir_{LATENT_DIM}',
save_weights_only=False,
save_freq=100)
model.fit([encoder_input_data, decoder_input_data],
decoder_target_data,
batch_size=64,
epochs=epochs,
validation_split=0.05,
shuffle=True,
callbacks=[model_checkpoint_callback],
verbose=1)
model.save(f'thrush_attn_bidir_{LATENT_DIM}_{epochs}')
def train():
train_data, test_data, constants = feature_extractors.load_dataset()
encoder_input_data, decoder_input_data, decoder_target_data = train_data
model = _build_model(constants)
print(model.summary())
l = keras.losses.MeanSquaredError()
o = keras.optimizers.Adam(learning_rate=0.0075)
model.compile(optimizer=o, loss=l)
model.fit([encoder_input_data, decoder_input_data], decoder_target_data,
batch_size=64,
epochs=int(sys.argv[3]),
validation_split=0.05)
model.save(f'chorale_model_bidirect_{LATENT_DIM}')
def train():
train_data, test_data, constants = feature_extractors.load_dataset()
encoder_input_data, decoder_input_data, decoder_target_data = train_data
model = _build_model(constants)
l = keras.losses.MeanSquaredError()
o = keras.optimizers.Adam(learning_rate=0.005)
model.compile(optimizer=o, loss=l)
model.fit([encoder_input_data, decoder_input_data], decoder_target_data,
batch_size=32,
epochs=100,
validation_split=0.05)
model.save('chorale_model_128')
def predict():
train_data, test_data, constants = feature_extractors.load_dataset()
encoder_input_data, decoder_input_data, decoder_target_data = test_data
model = keras.models.load_model(f'uni_lstm_{LATENT_DIM}')
# Extract encoder from graph
encoder_inputs = model.input[0]
_, state_h_enc, state_c_enc = model.layers[3].output # lstm_1
encoder_states = [state_h_enc, state_c_enc]
encoder_model = keras.Model(encoder_inputs, encoder_states)
# Extract decoder from graph
decoder_inputs = model.input[1]
decoder_state_input_h = keras.Input(shape=(LATENT_DIM, ), name="input_3")
decoder_state_input_c = keras.Input(shape=(LATENT_DIM, ), name="input_4")
decoder_states_inputs = [decoder_state_input_h, decoder_state_input_c]
decoder_lstm = model.layers[-2]
decoder_dense = model.layers[-1]
decoder_outputs, state_h_dec, state_c_dec = decoder_lstm(
decoder_inputs, initial_state=decoder_states_inputs)
decoder_states = [state_h_dec, state_c_dec]
decoder_outputs = decoder_dense(decoder_outputs)
decoder_model = keras.Model([decoder_inputs] + decoder_states_inputs,
[decoder_outputs] + decoder_states)
def _terminate(toks):
return np.isclose(np.mean(-1 - toks), 0.0, atol=0.5)
def decode(input_seq):
states_value = encoder_model.predict(np.array([input_seq]))
target_seq = np.ones((1, 1, constants['Y_DIM'])) * -1.
result = []
stop = False
for _ in range(100):
output_tokens, h, c = decoder_model.predict([target_seq] +
states_value)
if _terminate(output_tokens):
return result
result.append(output_tokens)
target_seq = np.ones((1, 1, constants['Y_DIM'])) * output_tokens
states_value = [h, c]
print("Decoding did not terminate! Returning large RNA.")
return result
def cut_off_ground_truth(ground_truth):
res = []
for g in ground_truth:
if _terminate(g):
return res
res.append(g)
print("Ground truth does not terminate! Returning large RNA.")
err_rates = []
len_diffs = []
for chorale_ind in range(len(encoder_input_data))[:15]:
print("Eval for chorale " + str(chorale_ind))
decoded = decode(encoder_input_data[chorale_ind])
decoded_rna_chords = [
feature_extractors.RNAChord(encoding=decoded[i][0][0])
for i in range(len(decoded))
]
ground_truth = cut_off_ground_truth(decoder_target_data[chorale_ind])
ground_truth_chords = [
feature_extractors.RNAChord(encoding=ground_truth[i])
for i in range(len(ground_truth))
]
errs = scoring.levenshtein(
ground_truth_chords,
decoded_rna_chords,
equality_fn=scoring.EQUALITY_FNS['key_enharmonic'])
print(len(ground_truth_chords) - len(decoded_rna_chords))
len_diffs.append(
abs(len(ground_truth_chords) - len(decoded_rna_chords)))
err_rates.append(float(errs / len(ground_truth_chords)))
print("Error rate: " + str(np.mean(err_rates)))
print("Len diff: " + str(np.mean(len_diffs)))
def predict(epochs, teacher_forcing_prob):
train_data, test_data, constants = load_dataset()
encoder_input_data, decoder_input_data, decoder_target_data = test_data
# Add slices here to test only a subset of the data
# encoder_input_data = encoder_input_data[:1]
# decoder_input_data = decoder_input_data[:1]
# decoder_target_data = decoder_target_data[:1]
# model = keras.models.load_model(MODEL_PATH + '/thrush_attn_32_bs256_istermmse_lr001B09_luongattn_big_TF0_3/510',
# custom_objects={
# 'DecoderLayer': DecoderLayer,
# 'AttentionCell': AttentionCell,
# },
# compile=False)
model = _build_model(constants, teacher_forcing_prob)
#model.load_weights(MODEL_PATH + '/thrush_attn_32_bs256_istermmse_lr001B09_luongattn_big_TF075_4/660/variables/variables')
#model.load_weights(MODEL_PATH + '/thrush_attn_32_bs256_istermmse_lr001B09_luongattn_big_TF05_4/720/variables/variables')
model.load_weights('runmodel/variables/variables')
#model.load_weights(MODEL_PATH + '/thrush_attn_64_bs256_attnin_lr001B09_luongattn_big_TF09_dropout/700/variables/variables')
def _get_layers(layer_type):
return [l for l in model.layers if layer_type in str(type(l))]
# We have to do a weird thing here to make decoding work: We need to create
# new Keras model which instead of consuming an entire chorale/RNA sequence,
# consumes only a chorale sequence, and produces the RNA sequence one step
# at a time. To do this, we extract the relevant layers of the training
# model one by one and then piece them back together. I got the idea from
# https://blog.keras.io/a-ten-minute-introduction-to-sequence-to-sequence-learning-in-keras.html
# Extract encoder from graph
encoder_inputs = model.input[0]
encoder_outputs, state_h_enc, state_c_enc = _get_layers(
'LSTM')[-1].output # lstm_1
encoder_states = [state_h_enc, state_c_enc]
encoder_model = keras.Model(encoder_inputs,
[encoder_states, encoder_outputs])
# Extract decoder from graph
decoder_inputs = keras.Input(shape=(1, constants['Y_DIM']),
name='rna_input_inference')
dense_out_inputs = keras.Input(shape=(constants['Y_DIM']),
name='dense_out_inputs_inference')
# Inputs for the last decoder state
decoder_state_inputs = [
keras.Input(shape=(LATENT_DIM, ), name='decoder_state_h_1_inference'),
keras.Input(shape=(LATENT_DIM, ), name='decoder_state_h_2_inference'),
keras.Input(shape=(LATENT_DIM, ), name='decoder_state_h_3_inference'),
keras.Input(shape=(LATENT_DIM, ), name='decoder_state_c_1_inference'),
keras.Input(shape=(LATENT_DIM, ), name='decoder_state_c_2_inference'),
keras.Input(shape=(LATENT_DIM, ), name='decoder_state_c_3_inference'),
]
decoder_state_input_attn_energies = keras.Input(
shape=(constants['MAX_CHORALE_LENGTH']),
name='decoder_state_input_attn_energies')
encoder_output_input = keras.Input(shape=(constants['MAX_CHORALE_LENGTH'],
LATENT_DIM),
name="encoder_output_input")
decoder_recurrent = _get_layers('recurrent.RNN')[0]
decoder_states_inputs = [
dense_out_inputs, decoder_state_inputs,
decoder_state_input_attn_energies, encoder_output_input
]
dense_outputs, _, _, decoder_state, attention_energies, _ = decoder_recurrent(
decoder_inputs, initial_state=decoder_states_inputs)
output_components = _convert_dense_to_output_components(dense_outputs)
ins = [decoder_inputs]
ins.extend(decoder_states_inputs)
outs = [output_components, dense_outputs]
outs.extend([decoder_state, attention_energies])
decoder_model = keras.Model(ins, outs)
# Returns true when the "is_terminal" output is set to -1, meaning the RNA
# is finished.
def _terminate(toks):
return (toks[-1] <= -0.5)
# Cut off analysis at minimum value of is_terminal
def _cut_off(result, attn_energies, output_tokens):
is_terms = [r[0][0][-1] for r in output_tokens]
terminal_chord_ind = np.argmin(is_terms)
for i, term in enumerate(is_terms):
if term < 0:
terminal_chord_ind = i
break
return result[:terminal_chord_ind +
1], attn_energies[:terminal_chord_ind + 1]
# Decode a single chorale.
def decode(input_seq, decoder_input=None):
(prev_decoder_state_h,
prev_decoder_state_c), encoder_output_values = encoder_model.predict(
np.array([input_seq]))
prev_decoder_states = [
prev_decoder_state_h, prev_decoder_state_h, prev_decoder_state_h,
prev_decoder_state_c, prev_decoder_state_c, prev_decoder_state_c
]
prev_attention_energies = tf.zeros_like(
tf.reduce_sum(encoder_output_values, axis=-1))
target_seq = np.ones((1, 1, constants['Y_DIM'])) * -5.
prev_dense = np.ones((1, constants['Y_DIM'])) * -5.
result = []
output_tokens_list = []
attn_energies = []
for k in range(constants['MAX_ANALYSIS_LENGTH'])[:-1]:
ins = [target_seq]
ins.extend([
prev_dense, prev_decoder_states, prev_attention_energies,
encoder_output_values
])
ins.append(encoder_output_values)
output_components, dense_outs, prev_decoder_states, prev_attention_energies = decoder_model.predict(
ins)
attn_energies.append(prev_attention_energies)
output_tokens_after_softmax = np.concatenate(
[output_components[key] for key in COMPONENTS_IN_ORDER],
axis=-1)
# translate to RNAChord during decoding
rna_chord = RNAChord(encoding=output_tokens_after_softmax[0][0])
output_tokens_from_chord = [[rna_chord.encode()]]
output_tokens_list.append(output_tokens_after_softmax)
result.append(output_tokens_from_chord)
target_seq = np.ones((1, 1, constants['Y_DIM'])) * dense_outs
prev_dense = np.ones((1, constants['Y_DIM'])) * dense_outs
prev_dense = np.squeeze(prev_dense, axis=1)
result, attn_energies = _cut_off(result, attn_energies,
output_tokens_list)
return result, attn_energies
def cut_off_ground_truth(ground_truth):
res = []
for g in ground_truth:
if _terminate(g):
return res
res.append(g)
print("Ground truth does not terminate! Returning large RNA.")
err_rates = []
len_diffs = []
attn_energy_matrixes = []
chorale_inds = list(range(len(encoder_input_data)))
random.shuffle(chorale_inds)
for chorale_ind in chorale_inds:
print("Eval for chorale " + str(chorale_ind))
decoded, attn_energies = decode(encoder_input_data[chorale_ind],
decoder_input_data[chorale_ind])
attn_energy_matrixes.append(attn_energies)
decoded_rna_chords = [
RNAChord(encoding=decoded[i][0][0]) for i in range(len(decoded))
]
ground_truth = cut_off_ground_truth(decoder_target_data[chorale_ind])
ground_truth_chords = [
RNAChord(encoding=ground_truth[i])
for i in range(len(ground_truth))
]
err_rates = collections.defaultdict(list)
for fn_name in EQUALITY_FNS.keys():
errs = levenshtein(ground_truth_chords,
decoded_rna_chords,
equality_fn=EQUALITY_FNS[fn_name],
substitution_cost=1,
left_deletion_cost=1,
right_deletion_cost=1)
err_rates[fn_name].append(float(errs / len(decoded_rna_chords)))
print("Ground Truth: %s, Decoded: %s" %
(len(ground_truth_chords), len(decoded_rna_chords)))
# Uncomment these lines to see the ground truth RNA sequence together
# with the decoded prediction.
# print("--------------------- GROUND TRUTH ------------------")
# for c in ground_truth_chords:
# print(c)
# print("--------------------- PREDICTION -------------------")
# for c in decoded_rna_chords:
# print(c)
# print("-------------------- ANALYSIS COMPLETE ---------------")
for fn_name in EQUALITY_FNS.keys():
print("Error Name: " + fn_name + " Error Rate: " +
str(np.mean(err_rates[fn_name])))
return attn_energy_matrixes
def predict(epochs, teacher_forcing_prob):
train_data, test_data, constants = feature_extractors.load_dataset()
encoder_input_data, decoder_input_data, decoder_target_data = test_data
model = _build_model(constants, teacher_forcing_prob=teacher_forcing_prob)
model.load_weights('runmodel2/variables/variables')
# model.load_weights(
# f'thrush_attn_32_bs256_istermmse_lr001B09_luongattn_big_{LATENT_DIM}_{epochs}/variables/variables')
def _get_layers(layer_type):
return [l for l in model.layers if layer_type in str(type(l))]
# Extract encoder from graph
encoder_inputs = model.input[0]
enc_outs, state_h_enc_forward, state_c_enc_forward, state_h_enc_backward, state_c_enc_backward = model.layers[
5].output
# return
state_h_enc = keras.layers.Concatenate()(
[state_h_enc_forward, state_h_enc_backward])
state_c_enc = keras.layers.Concatenate()(
[state_c_enc_forward, state_c_enc_backward])
encoder_states = [state_h_enc, state_c_enc]
encoder_model = keras.Model(encoder_inputs, [encoder_states, enc_outs])
# Extract decoder from graph
decoder_inputs = keras.Input(shape=(1, constants['Y_DIM']),
name='rna_input_inference')
dense_out_inputs = keras.Input(shape=(constants['Y_DIM']),
name='dense_out_inputs_inference')
decoder_state_inputs = [
keras.Input(shape=(LATENT_DIM * 2, ),
name='decoder_state_h_1_inference'),
keras.Input(shape=(LATENT_DIM * 2, ),
name='decoder_state_h_2_inference'),
keras.Input(shape=(LATENT_DIM * 2, ),
name='decoder_state_h_3_inference'),
keras.Input(shape=(LATENT_DIM * 2, ),
name='decoder_state_c_1_inference'),
keras.Input(shape=(LATENT_DIM * 2, ),
name='decoder_state_c_2_inference'),
keras.Input(shape=(LATENT_DIM * 2, ),
name='decoder_state_c_3_inference'),
]
decoder_state_input_attn_energies = keras.Input(
shape=(constants['MAX_CHORALE_LENGTH']),
name='decoder_state_input_attn_energies')
encoder_output_input = keras.Input(shape=(constants['MAX_CHORALE_LENGTH'],
2 * LATENT_DIM),
name="encoder_output_input")
decoder_recurrent = _get_layers('recurrent.RNN')[0]
decoder_states_inputs = [
dense_out_inputs, decoder_state_inputs,
decoder_state_input_attn_energies, encoder_output_input
]
dense_outputs, _, _, decoder_state, attention_energies, _ = decoder_recurrent(
decoder_inputs, initial_state=decoder_states_inputs)
output_components = _convert_dense_to_output_components(dense_outputs)
ins = [decoder_inputs]
ins.extend(decoder_states_inputs)
outs = [output_components, dense_outputs]
outs.extend([decoder_state, attention_energies])
decoder_model = keras.Model(ins, outs)
# Retruns true when the "is_terminal" output is set to -1, meaning the RNA
# is finished.
def _terminate(toks):
return (toks[-1] <= -0.5)
# Cut off analysis at minimum value of is_terminal
def _cut_off(result, attn_energies, output_tokens):
is_terms = [r[0][0][-1] for r in output_tokens]
terminal_chord_ind = np.argmin(is_terms)
for i, term in enumerate(is_terms):
if term < 0:
terminal_chord_ind = i
break
return result[:terminal_chord_ind +
1], attn_energies[:terminal_chord_ind + 1]
# Decode a single chorale.
def decode(input_seq, decoder_input=None):
(prev_decoded_state_h,
prev_decoded_state_c), encoder_output_values = encoder_model.predict(
np.array([input_seq]))
prev_decoder_states = [
prev_decoded_state_h, prev_decoded_state_h, prev_decoded_state_h,
prev_decoded_state_c, prev_decoded_state_c, prev_decoded_state_c
]
prev_attention_energies = tf.zeros_like(
tf.reduce_sum(encoder_output_values, axis=-1))
target_seq = np.ones((1, 1, constants['Y_DIM'])) * -5.
prev_dense = np.ones((1, constants['Y_DIM'])) * -5.
result = []
output_tokens_list = []
attn_energies = []
for k in range(constants['MAX_ANALYSIS_LENGTH'])[:-1]:
ins = [target_seq]
ins.extend([
prev_dense, prev_decoder_states, prev_attention_energies,
encoder_output_values
])
ins.append(encoder_output_values)
output_components, dense_outs, prev_decoder_states, prev_attention_energies = decoder_model.predict(
ins)
attn_energies.append(prev_attention_energies)
output_tokens_after_softmax = np.concatenate(
[output_components[key] for key in COMPONENTS_IN_ORDER],
axis=-1)
# translate to RNAChord during decoding
rna_chord = RNAChord(encoding=output_tokens_after_softmax[0][0])
output_tokens_from_chord = [[rna_chord.encode()]]
output_tokens_list.append(output_tokens_after_softmax)
result.append(output_tokens_from_chord)
target_seq = np.ones((1, 1, constants['Y_DIM'])) * dense_outs
prev_dense = np.ones((1, constants['Y_DIM'])) * dense_outs
prev_dense = np.squeeze(prev_dense, axis=1)
result, attn_energies = _cut_off(result, attn_energies,
output_tokens_list)
return result, attn_energies
def cut_off_ground_truth(ground_truth):
res = []
for g in ground_truth:
if _terminate(g):
return res
res.append(g)
print("Ground truth does not terminate! Returning large RNA.")
err_rates = []
len_diffs = []
attn_energy_matrixes = []
chorale_inds = list(range(len(encoder_input_data)))
random.shuffle(chorale_inds)
for chorale_ind in chorale_inds:
print("Eval for chorale " + str(chorale_ind))
decoded, atnn_energies = decode(encoder_input_data[chorale_ind],
decoder_input_data[chorale_ind])
attn_energy_matrixes.append(atnn_energies)
decoded_rna_chords = [
feature_extractors.RNAChord(encoding=decoded[i][0][0])
for i in range(len(decoded))
]
ground_truth = cut_off_ground_truth(decoder_target_data[chorale_ind])
ground_truth_chords = [
feature_extractors.RNAChord(encoding=ground_truth[i])
for i in range(len(ground_truth))
]
err_rates = collections.defaultdict(list)
for fn_name in EQUALITY_FNS.keys():
errs = levenshtein(ground_truth_chords,
decoded_rna_chords,
equality_fn=EQUALITY_FNS[fn_name],
substitution_cost=1,
left_deletion_cost=1,
right_deletion_cost=1)
err_rates[fn_name].append(float(errs / len(decoded_rna_chords)))
print("Ground Truth: %s, Decoded: %s" %
(len(ground_truth_chords), len(decoded_rna_chords)))
for fn_name in EQUALITY_FNS.keys():
print("Error Name: " + fn_name + " Error Rate: " +
str(np.mean(err_rates[fn_name])))
return attn_energy_matrixes
def predict(epochs):
train_data, test_data, constants = feature_extractors.load_dataset()
encoder_input_data, decoder_input_data, decoder_target_data = test_data
model = keras.models.load_model(
f'thrush_attn_bidir_{LATENT_DIM}_{epochs}',
custom_objects={'AttentionLayer': AttentionLayer},
compile=False)
def _get_layers(layer_type):
return [l for l in model.layers if layer_type in str(type(l))]
# Extract encoder from graph
encoder_inputs = model.input[0]
enc_outs, state_h_enc_forward, state_c_enc_forward, state_h_enc_backward, state_c_enc_backward = model.layers[
2].output
# return
state_h_enc = keras.layers.Concatenate()(
[state_h_enc_forward, state_h_enc_backward])
state_c_enc = keras.layers.Concatenate()(
[state_c_enc_forward, state_c_enc_backward])
encoder_states = [state_h_enc, state_c_enc]
encoder_model = keras.Model(encoder_inputs, [encoder_states, enc_outs])
# Extract decoder from graph
decoder_inputs = keras.Input(shape=(1, constants['Y_DIM']),
name='rna_input_inference')
decoder_state_input_h = keras.Input(shape=(LATENT_DIM * 2, ),
name="decoder_state_h_inference")
decoder_state_input_c = keras.Input(shape=(LATENT_DIM * 2, ),
name="decoder_state_c_inference")
decoder_states_inputs = [decoder_state_input_h, decoder_state_input_c]
encoder_output_input = keras.Input(shape=(constants['MAX_CHORALE_LENGTH'],
LATENT_DIM * 2),
name="encoder_output_input")
decoder_lstm = model.layers[6]
decoder_attn = model.layers[7]
decoder_concat = model.layers[8]
decoder_dense = model.layers[9]
decoder_outputs, state_h_dec, state_c_dec = decoder_lstm(
decoder_inputs, initial_state=decoder_states_inputs)
decoder_states = [state_h_dec, state_c_dec]
attention_outputs, attention_energies = decoder_attn(
[encoder_output_input, decoder_outputs])
dense_outputs = decoder_dense(
decoder_concat([decoder_outputs, attention_outputs]))
output_components = _convert_dense_to_output_components(dense_outputs)
ins = [decoder_inputs]
ins.extend(decoder_states_inputs)
ins.append(encoder_output_input)
outs = [output_components]
outs.extend(decoder_states)
outs.append(attention_energies)
decoder_model = keras.Model(ins, outs)
# Retruns true when the "is_terminal" output is set to -1, meaning the RNA
# is finished.
def _terminate(toks):
return (toks[-1] < 0)
# Decode a single chorale.
def decode(input_seq):
states_value, encoder_output_values = encoder_model.predict(
np.array([input_seq]))
target_seq = np.ones((1, 1, constants['Y_DIM'])) * -5.
result = []
attn_energies = []
for k in range(constants['MAX_ANALYSIS_LENGTH']):
ins = [target_seq]
ins.extend(states_value)
ins.append(encoder_output_values)
output_components, h, c, attn_energy = decoder_model.predict(ins)
attn_energies.append(attn_energy)
output_tokens = np.concatenate(
[output_components[key] for key in COMPONENTS_IN_ORDER],
axis=-1)
result.append(output_tokens)
if _terminate(output_tokens[0][0]):
return result, attn_energies
target_seq = np.ones((1, 1, constants['Y_DIM'])) * output_tokens
states_value = [h, c]
print("Decoding did not terminate! Returning large RNA.")
return result, attn_energies
def cut_off_ground_truth(ground_truth):
res = []
for g in ground_truth:
if _terminate(g):
return res
res.append(g)
print("Ground truth does not terminate! Returning large RNA.")
err_rates = []
len_diffs = []
attn_energy_matrixes = []
chorale_inds = list(range(len(encoder_input_data)))
random.shuffle(chorale_inds)
for chorale_ind in chorale_inds[:20]:
print("Eval for chorale " + str(chorale_ind))
# c = encoder_input_data[chorale_ind]
# c = [i for i in c if i[-1] != -1]
# print(len(c))
decoded, attn_energies = decode(encoder_input_data[chorale_ind])
attn_energy_matrixes.append(attn_energies)
decoded_rna_chords = [
feature_extractors.RNAChord(encoding=decoded[i][0][0])
for i in range(len(decoded))
]
ground_truth = cut_off_ground_truth(decoder_target_data[chorale_ind])
ground_truth_chords = [
feature_extractors.RNAChord(encoding=ground_truth[i])
for i in range(len(ground_truth))
]
errs = scoring.levenshtein(
ground_truth_chords,
decoded_rna_chords,
equality_fn=scoring.EQUALITY_FNS['key_enharmonic_and_parallel'],
left_deletion_cost=0)
print(len(ground_truth_chords) - len(decoded_rna_chords))
len_diffs.append((len(ground_truth_chords) - len(decoded_rna_chords)))
err_rates.append(float(errs / len(ground_truth_chords)))
# Uncomment these lines to see the ground truth RNA sequence together
# with the decoded prediction.
# print("--------------------- GROUND TRUTH ------------------")
# for c in ground_truth_chords:
# print(c)
# print("--------------------- PREDICTION -------------------")
# for c in decoded_rna_chords:
# print(c)
print("Error rate: " + str(np.mean(err_rates)))
print("Len diff: " + str(np.mean(len_diffs)))
return attn_energy_matrixes