def nonopt_correlations():
corr_results = {}
for i, tsp in enumerate(timbrespace_db.keys()):
print('Processing', tsp)
corr_results[tsp] = {}
target_data = load.timbrespace_dismatrix(tsp, timbrespace_db)
for rs in sorted(representations):
aud_repres = load.timbrespace_features(
tsp,
representations=[rs],
window=None,
timbrespace_db=None,
verbose=False)[rs]
tab_red = []
rs_type = rs.split('_')[-1]
if rs_type == 'strf':
n_components = 1
for i in range(len(aud_repres)):
# print('PCA on sound %02i' % (i + 1))
strf_reduced = pca.pca(
np.absolute(aud_repres[i]),
aud_repres[i].shape[1],
n_components=n_components).flatten()
tab_red.append(strf_reduced / np.max(strf_reduced))
tab_red = np.transpose(np.asarray(tab_red))
elif rs_type == 'spectrogram' or rs_type == 'mps':
for i in range(len(aud_repres)):
tab_red.append(aud_repres[i].flatten())
tab_red = np.transpose(np.asarray(tab_red))
elif rs_type == 'spectrum':
for i in range(len(aud_repres)):
tab_red.append(aud_repres[i])
# 128 x nb sounds (time or freq?)
tab_red = np.transpose(np.asarray(tab_red))
input_data = tab_red / np.mean(np.std(tab_red, axis=0))
# plt.plot(input_data)
# plt.show()
ndims, ninstrus = input_data.shape[0], input_data.shape[1]
no_samples = ninstrus * (ninstrus - 1) / 2
idx_triu = np.triu_indices(target_data.shape[0], k=1)
target_v = target_data[idx_triu]
mean_target = np.mean(target_v)
std_target = np.std(target_v)
kernel = np.zeros((ninstrus, ninstrus))
for i in range(ninstrus):
for j in range(i + 1, ninstrus):
kernel[i, j] = np.sum(
np.power(input_data[:, i] - input_data[:, j], 2))
kernel_v = kernel[idx_triu]
mean_kernel = np.mean(kernel_v)
std_kernel = np.std(kernel_v)
Jn = np.sum(
np.multiply(kernel_v - mean_kernel, target_v - mean_target))
Jd = (no_samples - 1) * std_target * std_kernel
corr_results[tsp][rs] = Jn / Jd
print(' {} : {}'.format(rs, Jn / Jd))
pickle.dump(corr_results, open('correlations_results.pkl', 'wb'))
def compute_representations():
args = {
'timbre_spaces': list(sorted(load.database().keys())),
'audio_representations': [
'auditory_spectrum', 'fourier_spectrum', 'auditory_strf',
'fourier_strf', 'auditory_spectrogram', 'fourier_spectrogram',
'auditory_mps', 'fourier_mps'
],
'log_foldername': './outs/ts_crossval',
'audio_args': {
'resampling_fs': 16000,
'duration': 0.25,
'duration_cut_decay': 0.05
}
}
log_foldername = args['log_foldername']
print('--processing')
for i, tsp in enumerate(args['timbre_spaces']):
print('Processing', tsp)
subprocess.call(['mkdir', '-p', log_foldername+'/input_data'])
for rs in args['audio_representations']:
aud_repres = load.timbrespace_features(tsp, representations=[rs], audio_args=args['audio_args'])[rs]
tab_red = []
rs_type = rs.split('_')[-1]
mapping = []
variances = []
if rs_type == 'strf':
n_components = 1
for i in range(len(aud_repres)):
strf_reduced, mapping_, variances = pca.pca_patil(
np.absolute(aud_repres[i]),
aud_repres[i].shape[1],
n_components=n_components)
strf_reduced = strf_reduced.flatten()
tab_red.append(strf_reduced)
mapping.append(mapping_)
tab_red = np.transpose(np.asarray(tab_red))
elif rs_type == 'spectrogram' or rs_type == 'mps':
for i in range(len(aud_repres)):
tab_red.append(aud_repres[i].flatten())
tab_red = np.transpose(np.asarray(tab_red))
elif rs_type == 'spectrum':
for i in range(len(aud_repres)):
tab_red.append(aud_repres[i])
tab_red = np.transpose(np.asarray(tab_red))
np.savetxt(log_foldername+'/input_data/{}_{}_input_data.txt'.format(tsp, rs), tab_red)
print('--normalising')
for rs in args['audio_representations']:
print('Processing', rs)
normas = []
for i, tsp in enumerate(args['timbre_spaces']):
data = np.loadtxt(log_foldername+'/input_data/{}_{}_input_data.txt'.format(tsp, rs))
normas.append(np.mean(np.max(np.abs(data), axis=0)))
for i, tsp in enumerate(args['timbre_spaces']):
data = np.loadtxt(log_foldername+'/input_data/{}_{}_input_data.txt'.format(tsp, rs))
data = data / np.mean(normas)
# print(' save final data {} {:.5f}'.format(data.shape, np.mean(normas)))
np.savetxt(log_foldername+'/input_data/{}_{}_input_data.txt'.format(tsp, rs), data)
def run_once(tsp, rs, optim_args):
rslog_foldername = optim_args['log_foldername']
rs = rslog_foldername.split('/')[-1].split('-')[0]
dissimil_mat = load.timbrespace_dismatrix(tsp, timbrespace_db)
aud_repres = load.timbrespace_features(
tsp,
representations=[rs],
window=None,
timbrespace_db=None,
verbose=True)[rs]
tab_red = []
rs_type = rs.split('_')[-1]
mapping = []
variances = []
if rs_type == 'strf':
n_components = 1
for i in range(len(aud_repres)):
strf_reduced, mapping, variances = pca.pca(
np.absolute(aud_repres[i]),
aud_repres[i].shape[1],
n_components=n_components)
strf_reduced = strf_reduced.flatten()
tab_red.append(strf_reduced)
# tab_red.append(strf_reduced / np.max(strf_reduced))
tab_red = np.transpose(np.asarray(tab_red))
elif rs_type == 'spectrogram' or rs_type == 'mps':
for i in range(len(aud_repres)):
tab_red.append(aud_repres[i].flatten())
tab_red = np.transpose(np.asarray(tab_red))
elif rs_type == 'spectrum':
for i in range(len(aud_repres)):
tab_red.append(aud_repres[i])
# 128 x nb sounds (time or freq?)
tab_red = np.transpose(np.asarray(tab_red))
pickle.dump({
'data_repres': aud_repres,
'data_proj': tab_red,
'mapping': mapping,
'variances': variances,
'dissimilarities': dissimil_mat,
}, open(os.path.join(rslog_foldername, 'dataset.pkl'), 'wb'))
print(' data dimension:', tab_red.shape)
print('* normalizing')
tab_red = tab_red / np.max(np.max(np.abs(tab_red), axis=0))
# plt.plot(tab_red)
# plt.show()
# optimization
correlations = training.kernel_optim(tab_red, dissimil_mat, **optim_args)
def run_one_tsp_rs(tsp, rs, args):
rslog_foldername = args['optim_args']['log_foldername']
rs = rslog_foldername.split('/')[-1].split('-')[0]
dissimil_mat = load.timbrespace_dismatrix(tsp, load.database())
aud_repres = load.timbrespace_features(tsp,
representations=[rs],
audio_args=args['audio_args'])[rs]
tab_red = []
rs_type = rs.split('_')[-1]
mapping = []
variances = []
if rs_type == 'strf':
n_components = 1
for i in range(len(aud_repres)):
strf_reduced, mapping_, variances = pca.pca_patil(
np.absolute(aud_repres[i]),
aud_repres[i].shape[1],
n_components=n_components)
strf_reduced = strf_reduced.flatten()
tab_red.append(strf_reduced)
mapping.append(mapping_)
tab_red = np.transpose(np.asarray(tab_red))
elif rs_type == 'spectrogram' or rs_type == 'mps':
for i in range(len(aud_repres)):
tab_red.append(aud_repres[i].flatten())
tab_red = np.transpose(np.asarray(tab_red))
elif rs_type == 'spectrum':
for i in range(len(aud_repres)):
tab_red.append(aud_repres[i])
tab_red = np.transpose(np.asarray(tab_red))
pickle.dump(
{
'data_repres': aud_repres,
'data_proj': tab_red,
'mapping': mapping,
'variances': variances,
'dissimilarities': dissimil_mat,
'audio_args': args['audio_args']
}, open(os.path.join(rslog_foldername, 'dataset.pkl'), 'wb'))
print(' data dimension:', tab_red.shape)
print('* normalizing')
tab_red = tab_red / np.mean(np.max(np.abs(tab_red), axis=0))
correlations, _ = training.kernel_optim_lbfgs_log(tab_red, dissimil_mat,
**args['optim_args'])
def run_one_tsp_rs(tsp, rs, args):
rslog_foldername = args['optim_args']['log_foldername']
rs = rslog_foldername.split('/')[-1].split('-')[0]
dissimil_mat = load.timbrespace_dismatrix(tsp, load.database())
aud_repres = load.timbrespace_features(tsp,
representations=[rs],
audio_args=args['audio_args'])[rs]
tab_red = []
rs_type = rs.split('_')[-1]
mapping = []
variances = []
reduce_strf = args['reduce_strf']
if rs_type == 'strf':
if reduce_strf == 'pca':
n_components = 1
for i in range(len(aud_repres)):
strf_reduced, mapping_, variances = pca.pca_patil(
np.absolute(aud_repres[i]),
aud_repres[i].shape[1],
n_components=n_components)
strf_reduced = strf_reduced.flatten()
tab_red.append(strf_reduced)
mapping.append(mapping_)
tab_red = np.transpose(np.asarray(tab_red))
elif reduce_strf == 'avg_time':
for i in range(len(aud_repres)):
strf_avgTime = np.mean(np.abs(aud_repres[i]), axis=0)
freqVec = [0, 14, 28, 42, 56, 71, 85, 99, 113, 127]
rateVec = [0, 3, 5, 7, 10, 11, 14, 16, 18, 21]
scaleVec = [0, 2, 3, 4, 5, 6, 7, 8, 9, 10]
indexedTab = strf_avgTime[freqVec, :, :][:,
scaleVec, :][:, :,
rateVec]
tab_red.append(indexedTab.flatten()) # decimation here
# [0:128:12,0:11,0:22:2]
# tab_red.append(strf_avgTime[0:128:12,0:11,0:22:2].flatten()) # decimation here
tab_red = np.transpose(np.asarray(tab_red))
elif reduce_strf == 'avg_time_avg_scale_rate_freq':
for i in range(len(aud_repres)):
tab_red.append(strf2avgvec(aud_repres[i]).flatten())
tab_red = np.transpose(np.asarray(tab_red))
elif reduce_strf == 'avg_time_avg_freq':
for i in range(len(aud_repres)):
strf_avgTime = np.mean(np.abs(aud_repres[i]), axis=0)
freqVec = [0, 14, 28, 42, 56, 71, 85, 99, 113, 127]
rateVec = [0, 3, 5, 7, 10, 11, 14, 16, 18, 21]
scaleVec = [0, 2, 3, 4, 5, 6, 7, 8, 9, 10]
indexedTab = strf_avgTime[freqVec, :, :][:,
scaleVec, :][:, :,
rateVec]
strf_scale_rate, strf_freq_rate, strf_freq_scale = avgvec2strfavg(
strf2avgvec(indexedTab),
nbChannels=10,
nbRates=10,
nbScales=10)
tab_red.append(strf_scale_rate.flatten())
# strf_scale_rate, strf_freq_rate, strf_freq_scale = avgvec2strfavg(strf2avgvec(aud_repres[i]))
# plotStrfavg(strf_scale_rate, strf_freq_rate, strf_freq_scale)
# tab_red.append(np.absolute(np.mean(aud_repres[i], axis=0)).flatten())
tab_red = np.transpose(np.asarray(tab_red))
elif reduce_strf == 'avg_time_avg_scale':
for i in range(len(aud_repres)):
strf_avgTime = np.mean(np.abs(aud_repres[i]), axis=0)
freqVec = [0, 14, 28, 42, 56, 71, 85, 99, 113, 127]
rateVec = [0, 3, 5, 7, 10, 11, 14, 16, 18, 21]
scaleVec = [0, 2, 3, 4, 5, 6, 7, 8, 9, 10]
indexedTab = strf_avgTime[freqVec, :, :][:,
scaleVec, :][:, :,
rateVec]
strf_scale_rate, strf_freq_rate, strf_freq_scale = avgvec2strfavg(
strf2avgvec(indexedTab),
nbChannels=10,
nbRates=10,
nbScales=10)
tab_red.append(strf_freq_rate.flatten())
# strf_scale_rate, strf_freq_rate, strf_freq_scale = avgvec2strfavg(strf2avgvec(aud_repres[i]))
# plotStrfavg(strf_scale_rate, strf_freq_rate, strf_freq_scale)
# tab_red.append(np.absolute(np.mean(aud_repres[i], axis=0)).flatten())
tab_red = np.transpose(np.asarray(tab_red))
elif reduce_strf == 'avg_time_avg_rate':
for i in range(len(aud_repres)):
strf_avgTime = np.mean(np.abs(aud_repres[i]), axis=0)
freqVec = np.array([0, 14, 28, 42, 56, 71, 85, 99, 113, 127])
rateVec = np.array([0, 3, 5, 7, 10, 11, 14, 16, 18, 21])
scaleVec = np.array([0, 2, 3, 4, 5, 6, 7, 8, 9, 10])
strf_scale_rate, strf_freq_rate, strf_freq_scale = avgvec2strfavg(
strf2avgvec(strf_avgTime[freqVec, scaleVec, rateVec]),
nbChannels=10,
nbRates=10,
nbScales=10)
tab_red.append(strf_freq_scale.flatten())
# strf_scale_rate, strf_freq_rate, strf_freq_scale = avgvec2strfavg(strf2avgvec(aud_repres[i]))
# plotStrfavg(strf_scale_rate, strf_freq_rate, strf_freq_scale)
# tab_red.append(np.absolute(np.mean(aud_repres[i], axis=0)).flatten())
tab_red = np.transpose(np.asarray(tab_red))
elif reduce_strf == 'avg_time_avg_SRSFFR':
for i in range(len(aud_repres)):
strf_scale_rate, strf_freq_rate, strf_freq_scale = avgvec2strfavg(
strf2avgvec(aud_repres[i]))
concat_tab = np.concatenate(
(strf_scale_rate, strf_freq_rate, strf_freq_scale),
axis=None)
tab_red.append(concat_tab.flatten())
# strf_scale_rate, strf_freq_rate, strf_freq_scale = avgvec2strfavg(strf2avgvec(aud_repres[i]))
# plotStrfavg(strf_scale_rate, strf_freq_rate, strf_freq_scale)
# tab_red.append(np.absolute(np.mean(aud_repres[i], axis=0)).flatten())
tab_red = np.transpose(np.asarray(tab_red))
else:
for i in range(len(aud_repres)):
tab_red.append(aud_repres[i].flatten())
tab_red = np.transpose(np.asarray(tab_red))
elif rs_type == 'spectrogram' or rs_type == 'mps':
for i in range(len(aud_repres)):
tab_red.append(aud_repres[i].flatten())
tab_red = np.transpose(np.asarray(tab_red))
elif rs_type == 'spectrum':
for i in range(len(aud_repres)):
tab_red.append(aud_repres[i])
tab_red = np.transpose(np.asarray(tab_red))
# print(tab_red)
# print(aud_repres)
# print(mapping)
# print(variances)
# print(dissimil_mat)
print(args['audio_args'])
# pickle.dump({
# 'data_repres': aud_repres,
# 'data_proj': tab_red,
# 'mapping': mapping,
# 'variances': variances,
# 'dissimilarities': dissimil_mat,
# 'audio_args': args['audio_args']
# }, open(os.path.join(rslog_foldername, 'dataset.pkl'), 'wb'))
print(' data dimension:', tab_red.shape)
print('* normalizing')
print(np.mean(np.max(np.abs(tab_red), axis=0)))
tab_red = tab_red / np.mean(np.max(np.abs(tab_red), axis=0))
correlations, sigmas__ = training.kernel_optim_lbfgs_log(
tab_red, dissimil_mat, **args['optim_args'])
# strf_scale_rate, strf_freq_rate, strf_freq_scale = avgvec2strfavg(sigmas__)
# plotStrfavg(strf_scale_rate, strf_freq_rate, strf_freq_scale,show='false',figname=tsp+'_'+str(correlations[-1]))
pickle.dump(
{
'sigmas': sigmas__,
'representations': tab_red,
'dissimilarities': dissimil_mat,
'audio_args': args['audio_args']
},
open(
os.path.join(args['log_foldername'] + 'resultsOptims_' + rs_type +
'_' + reduce_strf + '_' + tsp + '.pkl'), 'wb'))
def run_one_tsp_rs_crossval(tsp, rs, args):
rslog_foldername = args['optim_args']['log_foldername']
rs = rslog_foldername.split('/')[-1].split('-')[0]
dissimil_mat = load.timbrespace_dismatrix(tsp, load.database())
aud_repres = load.timbrespace_features(tsp,
representations=[rs],
audio_args=args['audio_args'])[rs]
tab_red = []
rs_type = rs.split('_')[-1]
mapping = []
variances = []
reduce_strf = args['reduce_strf']
if rs_type == 'strf':
if reduce_strf == 'pca':
n_components = 1
for i in range(len(aud_repres)):
strf_reduced, mapping_, variances = pca.pca_patil(
np.absolute(aud_repres[i]),
aud_repres[i].shape[1],
n_components=n_components)
strf_reduced = strf_reduced.flatten()
tab_red.append(strf_reduced)
mapping.append(mapping_)
tab_red = np.transpose(np.asarray(tab_red))
elif reduce_strf == 'avg_time':
for i in range(len(aud_repres)):
tab_red.append(
np.absolute(np.mean(aud_repres[i], axis=0)).flatten())
tab_red = np.transpose(np.asarray(tab_red))
else:
for i in range(len(aud_repres)):
tab_red.append(aud_repres[i].flatten())
tab_red = np.transpose(np.asarray(tab_red))
elif rs_type == 'spectrogram' or rs_type == 'mps':
for i in range(len(aud_repres)):
tab_red.append(aud_repres[i].flatten())
tab_red = np.transpose(np.asarray(tab_red))
elif rs_type == 'spectrum':
for i in range(len(aud_repres)):
tab_red.append(aud_repres[i])
tab_red = np.transpose(np.asarray(tab_red))
pickle.dump(
{
'data_repres': aud_repres,
'data_proj': tab_red,
'mapping': mapping,
'variances': variances,
'dissimilarities': dissimil_mat,
'audio_args': args['audio_args']
}, open(os.path.join(rslog_foldername, 'dataset.pkl'), 'wb'))
print(' data dimension:', tab_red.shape)
print('* normalizing')
tab_red = tab_red / np.mean(np.max(np.abs(tab_red), axis=0))
ninstrus = tab_red.shape[1]
correlations_training = []
sigmas_training = []
correlations_testing = []
correlations_testing_pearson = []
correlations_testing_spearman = []
sigmas_testing = []
distances_testing = []
target_testing = []
print('* cross-validation tests')
org_fname = args['optim_args']['log_foldername']
for fold in range(ninstrus):
# training data
train_idx = [i for i in range(tab_red.shape[1]) if i != fold]
sorted_train_idx = sorted(train_idx)
input_data_training = tab_red[:, train_idx]
target_data_training = dissimil_mat[train_idx, :]
target_data_training = target_data_training[:, train_idx]
# testing data
test_idx = [fold]
input_data_testing = tab_red[:, test_idx[0]]
target_data_testing = np.zeros((ninstrus - 1, 1))
cpt_i = 0
for i in range(ninstrus):
if i > test_idx[0]:
target_data_testing[cpt_i] = dissimil_mat[test_idx[0], i]
cpt_i += 1
elif i < test_idx[0]:
target_data_testing[cpt_i] = dissimil_mat[i, test_idx[0]]
cpt_i += 1
target_testing.append(target_data_testing.reshape(1, -1))
mean_target_test = np.mean(target_data_testing)
std_target_test = np.std(target_data_testing)
# optimisation on fold i
print('* Fold {} - {} {}'.format(fold + 1, train_idx, test_idx))
args['optim_args']['allow_resume'] = False
args['optim_args']['log_foldername'] = org_fname + '/fold{}'.format(
fold + 1)
subprocess.call(['mkdir', '-p', args['optim_args']['log_foldername']])
correlations, sigmas = training.kernel_optim_lbfgs_log(
input_data=input_data_training,
target_data=target_data_training,
test_data=(input_data_testing, target_data_testing),
**args['optim_args'])
correlations_training.append(correlations)
sigmas_training.append(sigmas)
distances = np.zeros((ninstrus - 1, 1))
for i in range(ninstrus - 1):
distances[i, 0] = -np.sum(
np.power(
np.divide(
tab_red[:, test_idx[0]] -
tab_red[:, sorted_train_idx[i]],
(sigmas + np.finfo(float).eps)), 2))
distances_testing.append(distances.reshape(1, -1))
mean_distances = np.mean(distances)
stddev_distances = np.std(distances)
Jn = np.sum(
np.multiply(distances - mean_distances,
target_data_testing - mean_target_test))
Jd = std_target_test * stddev_distances * (ninstrus - 1)
correlations_testing.append(Jn / Jd)
sigmas_testing.append(sigmas)
pearsr = pearsonr(distances, target_data_testing)
correlations_testing_pearson.append(pearsr)
spear_rho, spear_p_val = spearmanr(distances, target_data_testing)
spear = [spear_rho, spear_p_val]
correlations_testing_spearman.append(spear)
print('\tFold={} test_corr={:.3f} (PE {} | SP {}) (train_corr={:.3f})'.
format(fold + 1, Jn / Jd, pearsr, spear, correlations[-1]))
pickle.dump(
{
'correlations_training': correlations_training,
'sigmas_training': sigmas_training,
'correlations_testing': correlations_testing,
'sigmas_testing': sigmas_testing,
'correlations_testing_pearson': correlations_testing_pearson,
'correlations_testing_spearman': correlations_testing_spearman,
'distances_testing': distances_testing,
'target_data_testing': target_testing
},
open(os.path.join(rslog_foldername, 'crossval_intrats_res.pkl'),
'wb'))
mean_correlations_training = [
correlations_training[i][-1] for i in range(len(correlations_training))
]
mean_correlations_training = np.mean(mean_correlations_training)
distances_testing = np.squeeze(np.array(distances_testing)).reshape(-1, 1)
target_testing = np.squeeze(np.array(target_testing)).reshape(-1, 1)
print(
'\tAll Folds: mean_training_corr={} | corr_testing_pears={} | corr_testing_spear={}'
.format(mean_correlations_training,
pearsonr(distances_testing[:, 0], target_testing[:, 0]),
spearmanr(distances_testing[:, 0], target_testing[:, 0])))
def run_one_tsp_rs_crossval(tsp, rs, args):
rslog_foldername = args['optim_args']['log_foldername']
rs = rslog_foldername.split('/')[-1].split('-')[0]
dissimil_mat = load.timbrespace_dismatrix(tsp, load.database())
aud_repres = load.timbrespace_features(tsp,
representations=[rs],
audio_args=args['audio_args'])[rs]
tab_red = []
rs_type = rs.split('_')[-1]
mapping = []
variances = []
if rs_type == 'strf':
n_components = 1
for i in range(len(aud_repres)):
strf_reduced, mapping_, variances = pca.pca_patil(
np.absolute(aud_repres[i]),
aud_repres[i].shape[1],
n_components=n_components)
strf_reduced = strf_reduced.flatten()
tab_red.append(strf_reduced)
mapping.append(mapping_)
tab_red = np.transpose(np.asarray(tab_red))
elif rs_type == 'spectrogram' or rs_type == 'mps':
for i in range(len(aud_repres)):
tab_red.append(aud_repres[i].flatten())
tab_red = np.transpose(np.asarray(tab_red))
elif rs_type == 'spectrum':
for i in range(len(aud_repres)):
tab_red.append(aud_repres[i])
tab_red = np.transpose(np.asarray(tab_red))
pickle.dump(
{
'data_repres': aud_repres,
'data_proj': tab_red,
'mapping': mapping,
'variances': variances,
'dissimilarities': dissimil_mat,
'audio_args': args['audio_args']
}, open(os.path.join(rslog_foldername, 'dataset.pkl'), 'wb'))
print(' data dimension:', tab_red.shape)
print('* normalizing')
tab_red = tab_red / np.mean(np.max(np.abs(tab_red), axis=0))
corr_fold = []
sigmas_fold = []
print('* cross-validation tests')
for fold in range(20):
idx = [i for i in range(tab_red.shape[1])]
random.shuffle(idx)
train_idx = idx[:int(2 * len(idx) / 3)]
test_idx = idx[int(2 * len(idx) / 3):]
dmat = dissimil_mat[train_idx, :]
dmat = dmat[:, train_idx]
print('* Fold {} - {} {}'.format(fold + 1, train_idx, test_idx))
correlations, sigmas = training.kernel_optim_lbfgs_log(
tab_red[:, train_idx], dmat, **args['optim_args'])
# testing
test_data = tab_red[:, test_idx]
dmat = dissimil_mat[test_idx, :]
target_test_data = dmat[:, test_idx]
idx_triu = np.triu_indices(target_test_data.shape[0], k=1)
target_test_data_v = target_test_data[idx_triu]
mean_target_test = np.mean(target_test_data_v)
std_target_test = np.std(target_test_data_v)
ninstrus = len(test_idx)
no_samples = ninstrus * (ninstrus - 1) / 2
kernel = np.zeros((ninstrus, ninstrus))
for i in range(ninstrus):
for j in range(i + 1, ninstrus):
kernel[i, j] = -np.sum(
np.power(
np.divide(test_data[:, i] - test_data[:, j],
(sigmas + np.finfo(float).eps)), 2))
kernel_v = kernel[idx_triu]
mean_kernel = np.mean(kernel_v)
std_kernel = np.std(kernel_v)
Jn = np.sum(
np.multiply(kernel_v - mean_kernel,
target_test_data_v - mean_target_test))
Jd = no_samples * std_target_test * std_kernel
corr_fold.append(Jn / Jd)
sigmas_fold.append(sigmas)
print('\tfold={} corr={}'.format(fold + 1, Jn / Jd))
pickle.dump({
'corr_fold': corr_fold,
'sigmas_fold': sigmas_fold
}, open(os.path.join(rslog_foldername, 'crossval_res.pkl'), 'wb'))
print('\tall folds: corr={} ({})'.format(np.mean(corr_fold),
np.std(corr_fold)))
def run_one_tsp_rs(tsp, rs, args):
rslog_foldername = args['optim_args']['log_foldername'] # logfolder
rs = rslog_foldername.split('/')[-1].split('-')[0]
dissimil_mat = load.timbrespace_dismatrix(
tsp, load.database()) # load dissimilarity matrix
aud_repres = load.timbrespace_features(
tsp, representations=[rs],
audio_args=args['audio_args'])[rs] # load representations
tab_red = []
rs_type = rs.split('_')[-1]
mapping = []
variances = []
reduce_strf = args['reduce_strf']
if rs_type == 'strf': # parse the type of input representation
if reduce_strf == 'avg_time':
for i in range(len(aud_repres)):
strf_avgTime = np.mean(np.abs(aud_repres[i]), axis=0)
tab_red.append(strf_avgTime.flatten())
tab_red = np.transpose(np.asarray(tab_red))
elif reduce_strf == 'avg_time_avg_scale_rate_freq':
for i in range(len(aud_repres)):
tab_red.append(strf2avgvec(aud_repres[i]).flatten())
tab_red = np.transpose(np.asarray(tab_red))
elif reduce_strf == 'avg_time_avg_freq':
for i in range(len(aud_repres)):
strf_scale_rate, strf_freq_rate, strf_freq_scale = avgvec2strfavg(
strf2avgvec(aud_repres[i]))
tab_red.append(strf_scale_rate.flatten())
tab_red = np.transpose(np.asarray(tab_red))
elif reduce_strf == 'avg_time_avg_scale':
for i in range(len(aud_repres)):
strf_scale_rate, strf_freq_rate, strf_freq_scale = avgvec2strfavg(
strf2avgvec(aud_repres[i]))
tab_red.append(strf_freq_rate.flatten())
tab_red = np.transpose(np.asarray(tab_red))
elif reduce_strf == 'avg_time_avg_rate':
for i in range(len(aud_repres)):
strf_scale_rate, strf_freq_rate, strf_freq_scale = avgvec2strfavg(
strf2avgvec(aud_repres[i]))
tab_red.append(strf_freq_scale.flatten())
tab_red = np.transpose(np.asarray(tab_red))
else:
for i in range(len(aud_repres)):
tab_red.append(aud_repres[i].flatten())
tab_red = np.transpose(np.asarray(tab_red))
print(args['audio_args'])
print(' data dimension:', tab_red.shape)
print('* normalizing')
print(tab_red)
print(np.mean(np.max(np.abs(tab_red), axis=0)).shape)
tab_red = tab_red / np.mean(np.max(np.abs(tab_red), axis=0))
correlations, sigmas__ = training.kernel_optim_lbfgs_log(
tab_red, dissimil_mat, **args['optim_args'])
pickle.dump(
{
'sigmas': sigmas__,
'representations': tab_red,
'dissimilarities': dissimil_mat,
'audio_args': args['audio_args']
},
open(
os.path.join(args['log_foldername'] + 'resultsOptims_' + rs_type +
'_' + reduce_strf + '_' + tsp + '.pkl'), 'wb'))
