def disp(net, ma, ol, b, batch=None):
filters = net.conv1.weight.data.cpu().numpy()
fig, axes = plt.subplots(4, 4)
for a, ax in enumerate(axes.reshape(-1)):
f = filters[a, :, :].squeeze()
im = ax.imshow(f)
if a == len(axes.reshape(-1)) - 1:
fig.colorbar(im, ax=ax)
plt.savefig('/home/jk/matt/nat_learn_synch/filters{}.png'.format(b))
plt.close()
#grads = net.conv1.weight.grad.data.cpu().numpy()
#fig, axes = plt.subplots(4,4)
#for a, ax in enumerate(axes.reshape(-1)):
# g = grads[a,:,:].squeeze()
# im = ax.imshow(g)
# if a == len(axes.reshape(-1)) - 1:
# fig.colorbar(im, ax=ax)
# plt.savefig('/home/jk/matt/nat_learn_synch/grads{}.png'.format(b))
# plt.close()
plt.plot(ma)
plt.savefig('/home/jk/matt/nat_learn_synch/activities.png')
plt.close()
plt.plot(ol)
plt.savefig('/home/jk/matt/nat_learn_synch/ortho_loss.png')
plt.close()
if batch is not None:
for i in range(5):
fig, ax = plt.subplots()
cplx = batch[i, 0, :, :] + 1j * batch[i, 1, :, :]
cplx_imshow(ax, cplx, cm=plt.cm.hsv)
plt.savefig('/home/jk/matt/nat_learn_synch/synch{}.png'.format(i))
plt.close()
def disp(Phi, save_dir, batch, w, inner_energies, outer_energies):
for e, energies in enumerate([inner_energies, outer_energies]):
name = 'inner_energies.png' if e == 0 else 'outer_energies.png'
plt.plot(np.array(energies).T)
plt.legend(('Total', 'Reconstruction', 'Sparsity', 'Desynchrony'))
plt.savefig(os.path.join(save_dir, name))
plt.close()
fig, axes = plt.subplots(4, 4)
for a, ax in enumerate(axes.reshape(-1)):
filt = Phi.data[a, ...].reshape(batch.shape[2],
batch.shape[3]).cpu().numpy()
ax.imshow(filt)
plt.savefig(os.path.join(save_dir, 'weights.png'))
plt.close()
fig, axes = plt.subplots(1, 2)
Phi = Phi.unsqueeze(0).repeat(2, 1, 1)
img = torch.cat((batch[0, 0, ...].unsqueeze(0),
torch.zeros_like(batch[0, 0, ...].unsqueeze(0))),
dim=0).data.cpu().numpy()
reconstruction = torch.einsum('bcm,cmn->bcn', w, Phi)[0, ...].reshape(
2, batch.shape[2], batch.shape[3]).data.cpu().numpy()
arrays = [img, reconstruction]
for (ax, array) in zip(axes, arrays):
cplx_array = array[0, ...] + 1j * array[1, ...]
cplx_imshow(ax, cplx_array)
plt.savefig(os.path.join(save_dir, 'cplx_reconstruction.png'))
plt.close()
def disp(net, ma, batch):
filters = net.conv1.weight.data.cpu().numpy()
fig, axes = plt.subplots(3,3)
for a, ax in enumerate(axes.reshape(-1)):
f = filters[a,:,:].squeeze()
im = ax.imshow(f)
if a == len(axes.reshape(-1)) - 1:
fig.colorbar(im, ax=ax)
plt.savefig('/home/jk/matt/learn_synch/filters.png')
plt.close()
plt.plot(ma)
plt.savefig('/home/jk/matt/learn_synch/activities.png')
plt.close()
for i in range(5):
fig, ax = plt.subplots()
ipdb.set_trace()
cplx = batch[i,0,:,:] + 1j*batch[i,1,:,:]
cplx_imshow(ax, cplx, cm=plt.cm.hsv)
plt.savefig('/home/jk/matt/learn_synch/synch_{}.png'.format(i))
plt.close()
def evaluate(phase_batch,
coupling,
p_sigma=1.0,
num_samples=16,
num_steps=256,
save_dir=None):
'''Generate num_samples batches of successive samples using HMC and save them.'''
phase = 2 * np.pi * torch.rand_like(phase_batch).double()
phase_history = []
for n in tqdm(range(num_samples)):
phase = hmc(phase, coupling, p_sigma=p_sigma, num_steps=num_steps)
phase_history.append(phase.data.numpy())
fig, axes = plt.subplots(4, 4)
for a, ax in enumerate(axes.reshape(-1)):
cplx_img = np.cos(
phase_history[a][0, ...]) + 1j * np.sin(phase_history[a][0, ...])
cplx_imshow(ax, cplx_img)
plt.savefig(os.path.join(save_dir, 'samples.png'))
plt.close()
def disp(net, save_dir, phase_arrays, inner_energies, outer_energies, out):
for e, energies in enumerate([inner_energies, outer_energies]):
name = 'inner_energies.png' if e == 0 else 'outer_energies.png'
plt.plot(np.array(energies).T)
plt.legend(('Total', 'Local Coherence', 'Global Coherence'))
plt.savefig(os.path.join(save_dir, name))
plt.close()
fig, axes = plt.subplots(4,4)
for a, ax in enumerate(axes.reshape(-1)):
filt = net.conv.weight.data[a,...].reshape(kernel_size, kernel_size).cpu().numpy()
ax.imshow(filt)
plt.savefig(os.path.join(save_dir, 'weights.png'))
plt.close()
fig, axes = plt.subplots(1,2)
for (ax,array) in zip(axes, phase_arrays):
array = array.data.cpu().numpy()[0,...]
cplx_array = array[0,...] + 1j*array[1,...]
cplx_imshow(ax, cplx_array)
plt.savefig(os.path.join(save_dir, 'inner_opt.png'))
plt.close()
fig, axes = plt.subplots(4,4)
for a, ax in enumerate(axes.reshape(-1)):
feature_map = out[0,:,a,...].cpu().numpy()
cplx_feature_map = feature_map[0,...] + 1j*feature_map[1,...]
cplx_imshow(ax, cplx_feature_map)
plt.savefig(os.path.join(save_dir, 'feature_maps.png'))
plt.close()
if net.bias:
biases = net.conv.bias.data.cpu().numpy()
plt.hist(biases)
plt.savefig(os.path.join(save_dir, 'biases.png'))
plt.close()
def run(z0, k, model, energy=Energy1, constraint=None):
z0_real = np.real(z0).reshape(1, 1, img_side, img_side)
z0_imag = np.imag(z0).reshape(1, 1, img_side, img_side)
z0_cplx = torch.tensor(np.concatenate((z0_real, z0_imag), axis=1)).cuda()
energies = []
for i in tqdm(range(max_iter)):
z0_variable = Variable(z0_cplx, requires_grad=True)
model.zero_grad()
out = model.forward_cplx(z0_variable).squeeze(0)
E = energy(out, target=k)
energies.append(E.cpu().data.numpy())
E.backward()
ratio = np.abs(z0_variable.grad.data.cpu().numpy()).mean()
lr_use = lr / ratio
z0_variable.data.sub_(z0_variable.grad.data * lr_use)
z0_cplx = z0_variable.data.cpu().numpy() # b, c, h, w
z0 = np.expand_dims(z0_cplx[:, 0, :, :] + 1j * z0_cplx[:, 1, :, :],
axis=0)
z0 = clip_norm(z0, constraint=constraint)
# Shape for input
z0_real = np.real(z0)
z0_imag = np.imag(z0)
z0_cplx = torch.tensor(np.concatenate((z0_real, z0_imag),
axis=1)).cuda()
if i == 0 or (i + 1) % save_every == 0:
fig, ax = plt.subplots()
cplx_imshow(ax, z0, remap=(mu, sigma))
plt.savefig(os.path.join(SAVE_PATH, 'dream%04d.png' % i))
plt.close()
return z0, np.array(energies)
cons = tuple([{'type' : 'eq',
'fun' : constraint,
'args' : (j,)} for j in range(v_side**2) + range(h_side**2)])
res = minimize(Ham, z0, method='SLSQP', constraints=cons, options={'disp':True, 'maxiter':max_iter})
ex = res['x']
ex_cplx = ex[:v_side**2].reshape(v_side, v_side) + 1j*ex[v_side**2:2*v_side**2].reshape(v_side, v_side)
if sub_exp == 1:
bar_1_avg_phase = np.mean(np.angle(ex_cplx[:int(np.ceil(v_side / 2.0)),i]))
bar_2_avg_phase = np.mean(np.angle(ex_cplx[int(np.ceil(v_side / 2.0)):,v_side - i - 1]))
phase_diff.append(np.abs(bar_1_avg_phase - bar_2_avg_phase))
elif sub_exp == 2:
p = pool(ex)
phase_diff.append(np.abs(np.angle(p[0]) - np.angle(p[1])))
elif sub_exp == 3:
fig, ax = plt.subplots()
cplx_imshow(ax, ex_cplx, cm=plt.cm.hsv)
plt.savefig('/home/matt/geman_style_videos/e{0}.png'.format(i))
continue
avg_phase_diff.append(np.mean(phase_diff))
std_phase_diff.append(np.std(phase_diff))
if sub_exp != 3:
t = np.array(range(v_side)) - int(np.floor(v_side / 2.0))
x = np.array(avg_phase_diff)
s = np.array(std_phase_diff)
plt.plot(t,x, color='#CC4F1B')
plt.fill_between(t, x - s, x + s, edgecolor='#CC4F1B', facecolor='#FF9848', alpha=.5)
plt.savefig('/home/matt/geman_style_videos/phase_diff2.png')
def noisy_mnist(max_noise_patches,
cplx=True,
patch_side=8,
num_images=60000,
save_dir=None,
cplx_bgrnd=True,
display=True):
clean_mnist = torch.load(
os.path.join(os.path.expanduser('~'), 'data', 'synch_data',
'MNIST/processed/training.pt'))
num_mnist = clean_mnist[0].shape[0]
im_side = 40
imgs = []
labels = []
counter = 0
pbar = tqdm(total=num_images)
while counter < num_images:
all_patches = []
all_phases = []
canvas = torch.zeros(im_side, im_side)
clean_img = clean_mnist[0][counter]
label = clean_mnist[1][counter]
digit_y = torch.randint(40 - 28 - 1, (1, ))
digit_x = torch.randint(40 - 28 - 1, (1, ))
canvas[digit_y:digit_y + 28, digit_x:digit_x + 28] = clean_img
all_phases.append(2 * np.pi * torch.rand((1, )))
# Add 'structured' noise
patch_inds = torch.randperm(num_mnist)[:max_noise_patches]
for ind in patch_inds:
patch_canvas = torch.zeros(im_side, im_side)
# Acquire patch
rand_y = torch.randint(28 - patch_side - 1, (1, ))
rand_x = torch.randint(28 - patch_side - 1, (1, ))
patch = clean_mnist[0][ind][rand_y:rand_y + patch_side,
rand_x:rand_x + patch_side]
# Place patch
patch_y = torch.randint(40 - patch_side - 1, (1, ))
patch_x = torch.randint(40 - patch_side - 1, (1, ))
patch_canvas[patch_y:patch_y + patch_side,
patch_x:patch_x + patch_side] = patch
all_patches.append(patch_canvas)
all_phases.append(2 * np.pi * torch.rand((1, )))
if cplx:
canvas = canvas.unsqueeze(0)
cplx_canvas = torch.cat([
canvas * torch.cos(all_phases[0]),
canvas * torch.sin(all_phases[0])
],
dim=0)
for (pch, phs) in zip(all_patches[1:], all_phases[1:]):
pch = pch.unsqueeze(0)
cplx_pch = torch.cat(
[pch * torch.cos(phs), pch * torch.sin(phs)], dim=0)
cplx_canvas[cplx_pch != 0] = cplx_pch[cplx_pch != 0]
canvas = cplx_canvas
else:
for pch in all_patches[1:]:
canvas += pch
canvas = torch.clamp(canvas, 0, 255)
if cplx_bgrnd:
bgrnd_phase = 2 * np.pi * torch.rand((1, ))
canvas[0, ...] = torch.where(
canvas[0, ...] == 0.0,
torch.cos(bgrnd_phase) * torch.ones_like(canvas[0, ...]),
canvas[0, ...])
canvas[1, ...] = torch.where(
canvas[1, ...] == 0.0,
torch.sin(bgrnd_phase) * torch.ones_like(canvas[1, ...]),
canvas[1, ...])
imgs.append(canvas)
labels.append(label)
if display and counter == 0:
if cplx:
np_img = canvas.numpy() / 255.
cplx_img = np_img[0, ...] + 1j * np_img[1, ...]
fig, ax = plt.subplots()
cplx_imshow(ax, cplx_img)
plt.savefig(
os.path.join(os.path.expanduser('~'),
'tmp_{}.png'.format(max_noise_patches)))
plt.close()
else:
np_img = canvas.numpy()
plt.imshow(np_img)
plt.savefig(os.path.join(os.path.expanduser('~'), 'tmp.png'))
plt.close()
counter += 1
pbar.update(1)
imgs = torch.stack(imgs)
labels = torch.stack(labels)
torch.save((imgs, labels),
os.path.join(save_dir,
'processed.pt'.format(max_noise_patches)))
def multi_mnist(num_digits,
cplx=True,
num_images=60000,
cplx_bgrnd=True,
save_dir=None,
display=True):
if num_images > 60000:
raise ('Number of images must be less than 60000')
clean_mnist = torch.load(
os.path.join(os.path.expanduser('~'),
'data/synch_data/MNIST/processed/training.pt'))
num_mnist = clean_mnist[0].shape[0]
im_side = 28 + (num_digits - 1) * 10
imgs = []
labels = []
counter = 0
pbar = tqdm(total=num_images)
while counter < num_images:
lb = []
all_digits = []
all_phases = []
canvas = torch.zeros(im_side, im_side)
clean_img = clean_mnist[0][counter]
if num_digits > 1:
digit_y1 = torch.randint(im_side - 28, (1, ))
digit_x1 = torch.randint(im_side - 28, (1, ))
canvas[digit_y1:digit_y1 + 28, digit_x1:digit_x1 + 28] = clean_img
else:
canvas = clean_img.float()
lb.append(clean_mnist[1][counter])
all_digits.append(canvas)
all_phases.append(2 * np.pi * torch.rand((1, )))
# Add digits
digit_inds = torch.randperm(num_mnist)[:num_digits - 1]
for ind in digit_inds:
digit_canvas = torch.zeros(im_side, im_side)
new_digit = clean_mnist[0][ind]
lb.append(clean_mnist[1][ind])
# Place patch
if num_digits > 1:
digit_yn = torch.randint(im_side - 28, (1, ))
digit_xn = torch.randint(im_side - 28, (1, ))
digit_canvas[digit_yn:digit_yn + 28,
digit_xn:digit_xn + 28] = new_digit
else:
digit_canvas = new_digit.float()
all_digits.append(digit_canvas)
all_phases.append(2 * np.pi * torch.rand((1, )))
if cplx:
canvas = canvas.unsqueeze(0)
cplx_canvas = torch.cat([
canvas * torch.cos(all_phases[0]),
canvas * torch.sin(all_phases[0])
],
dim=0)
for (dig, phs) in zip(all_digits[1:], all_phases[1:]):
dig = dig.unsqueeze(0)
cplx_dig = torch.cat(
[dig * torch.cos(phs), dig * torch.sin(phs)], dim=0)
cplx_canvas[cplx_dig != 0] = cplx_dig[cplx_dig != 0]
canvas = cplx_canvas
else:
for dig in all_digits[1:]:
canvas += dig
canvas = torch.clamp(canvas, 0, 255)
if cplx_bgrnd:
bgrnd_phase = 2 * np.pi * torch.rand((1, ))
canvas[0, ...] = torch.where(
canvas[0, ...] == 0.0,
128 * torch.cos(bgrnd_phase * torch.ones_like(canvas[0, ...])),
canvas[0, ...])
canvas[1, ...] = torch.where(
canvas[1, ...] == 0.0,
128 * torch.sin(bgrnd_phase * torch.ones_like(canvas[0, ...])),
canvas[1, ...])
imgs.append(canvas)
labels.append(torch.tensor(lb))
if display and counter == 0:
if cplx:
np_img = canvas.numpy() / 255.
cplx_img = np_img[0, ...] + 1j * np_img[1, ...]
fig, ax = plt.subplots()
cplx_imshow(ax, cplx_img)
plt.savefig(
os.path.join(os.path.expanduser('~'),
'tmp{}.png'.format(num_digits)))
#ipdb.set_trace()
else:
np_img = canvas.numpy()
plt.imshow(np_img)
plt.savefig(
os.path.join(os.path.expanduser('~'),
'tmp{}.png'.format(num_digits)))
plt.close()
#ipdb.set_trace()
counter += 1
pbar.update(1)
imgs = torch.stack(imgs)
labels = torch.stack(labels)
torch.save((imgs, labels),
os.path.join(save_dir, 'processed.pt'.format(num_digits)))
for (batch, target) in dl:
#v_prime = batch.data.numpy()[0,0,:,:]
v_prime = (np.random.rand(28,28) - mu) / sigma
k = target[0].data.numpy()
print('Target: {}'.format(k))
z0 = init(v_prime)
#z0 = v_prime
z0_real = np.real(z0)
z0_imag = np.imag(z0)
z0_flat = np.concatenate((z0_real.reshape(-1), z0_imag.reshape(-1)), axis=0)
print('Making constraints...')
cons = tuple([{'type' : 'ineq',
'fun' : constraint,
'args' : (j,free,)} for j in range(img_side**2)])
print('Optimizing...')
res = minimize(Energy, z0_flat, method='SLSQP', constraints=cons, options={'disp': True, 'maxiter':max_iter, 'verbose':2, 'ftol':0.0}, args=k)
cp = res.x
cp_real = cp[:784].reshape(28,28)
cp_imag = cp[784:].reshape(28,28)
cp_cplx = cp_real + 1j*cp_imag
for i, img in enumerate([z0, cp_cplx]):
name = 'init' if i == 0 else 'seg'
fig, ax = plt.subplots()
cplx_imshow(ax, img, cm=plt.cm.hsv, remap=(mu,sigma))
plt.savefig('/home/jk/matt/' + name + '.png')
plt.close()
ipdb.set_trace()
print('hey')