def nll_poisson(self, preds, target):
if self.normalize_nll:
return nn.PoissonNLLLoss(reduction='none')(preds, target).view(
preds.size(0), -1).mean(dim=1)
else:
return nn.PoissonNLLLoss(reduction='none')(preds, target).view(
preds.size(0), -1).sum(dim=1)
def train_manager():
os.environ["CUDA_VISIBLE_DEVICES"] = "0"
num_epochs = 300
lr = 0.000001
model = LFADSG(time=100,
neurons=50,
dim_e=16,
dim_c=24,
dim_d=32,
gcn_hidden=[8])
device = torch.device("cuda:0" if torch.cuda.is_available() else "cpu")
model = model.to(device)
criterion = nn.PoissonNLLLoss(log_input=True)
train_loader = get_train_data_loader(batch_size=128)
valid_loader = get_valid_data_loader(batch_size=128)
# optimizer
optimizer = optim.SGD(model.parameters(), lr=lr, momentum=0.9)
# lr scheduler
scheduler = optim.lr_scheduler.ExponentialLR(optimizer, gamma=0.998)
train_model(model, train_loader, valid_loader, criterion, optimizer,
scheduler, num_epochs)
def __init__(self, hparams):
"""
Parameters
----------
hparams : :obj:`dict`
- model_type (:obj:`str`): 'mlp' | 'mlp-mv' | 'lstm'
- input_size (:obj:`int`)
- output_size (:obj:`int`)
- n_hid_layers (:obj:`int`)
- n_hid_units (:obj:`int`)
- n_lags (:obj:`int`): number of lags in input data to use for temporal convolution
- noise_dist (:obj:`str`): 'gaussian' | 'gaussian-full' | 'poisson' | 'categorical'
- activation (:obj:`str`): 'linear' | 'relu' | 'lrelu' | 'sigmoid' | 'tanh'
"""
super().__init__()
self.hparams = hparams
self.model = None
self.build_model()
# choose loss based on noise distribution of the model
if self.hparams['noise_dist'] == 'gaussian':
self._loss = nn.MSELoss()
elif self.hparams['noise_dist'] == 'gaussian-full':
from behavenet.fitting.losses import GaussianNegLogProb
self._loss = GaussianNegLogProb() # model holds precision mat
elif self.hparams['noise_dist'] == 'poisson':
self._loss = nn.PoissonNLLLoss(log_input=False)
elif self.hparams['noise_dist'] == 'categorical':
self._loss = nn.CrossEntropyLoss()
else:
raise ValueError('"%s" is not a valid noise dist' %
self.model['noise_dist'])
def __init__(self,
core=Core(),
readout=Readout(),
output_nl=nn.Softplus(),
loss=nn.PoissonNLLLoss(log_input=False),
val_loss=None,
detach_core=False,
learning_rate=1e-3,
batch_size=1000,
num_workers=0,
data_dir='',
optimizer='AdamW',
weight_decay=1e-2,
amsgrad=False,
betas=[.9,.999],
max_iter=10000,
**kwargs):
super().__init__()
self.core = core
self.readout = readout
self.detach_core = detach_core
self.save_hyperparameters('learning_rate','batch_size',
'num_workers', 'data_dir', 'optimizer', 'weight_decay', 'amsgrad', 'betas',
'max_iter')
if val_loss is None:
self.val_loss = loss
else:
self.val_loss = val_loss
self.output_nl = output_nl
self.loss = loss
def _get_loss(self, loss_spec):
if not isinstance(self.loss_spec, str):
return self.loss_spec
elif loss_spec == 'mse':
return nn.MSELoss(reduction='mean')
elif loss_spec == 'sse':
return nn.MSELoss(reduction='sum')
elif loss_spec == 'crossentropy':
# Cross entropy loss is used for multiclass categorization and needs inputs in shape
# ((# minibatch_size, C), targets) where C is a 1-d vector of probabilities for each potential category
# and where target is a 1d vector of type long specifying the index to the target category. This
# formatting is different from most other loss functions available to autodiff compositions,
# and therefore requires a wrapper function to properly package inputs.
cross_entropy_loss = nn.CrossEntropyLoss()
return lambda x, y: cross_entropy_loss(x.unsqueeze(0),
y.type(torch.LongTensor))
elif loss_spec == 'l1':
return nn.L1Loss(reduction='sum')
elif loss_spec == 'nll':
return nn.NLLLoss(reduction='sum')
elif loss_spec == 'poissonnll':
return nn.PoissonNLLLoss(reduction='sum')
elif loss_spec == 'kldiv':
return nn.KLDivLoss(reduction='sum')
else:
raise AutodiffCompositionError(
"Loss type {} not recognized. Loss argument must be a string or function. "
"Currently, the recognized loss types are Mean Squared Error, Cross Entropy,"
" L1 loss, Negative Log Likelihood loss, Poisson Negative Log Likelihood, "
"and KL Divergence. These are specified as 'mse', 'crossentropy', 'l1', "
"'nll', 'poissonnll', and 'kldiv' respectively.".format(
loss_spec))
def __init__(self,
nb_kers,
nb_tk,
nb_sk,
time_lags=12,
rot_kernel_size=None):
super(ConvNIM, self).__init__()
if rot_kernel_size is None:
rot_kernel_size = [3, 3, 3]
padding = [k - 1 for k in rot_kernel_size]
self.chomp3d = Chomp(chomp_sizes=padding, nb_dims=3)
self.conv = RotConv3d(
in_channels=2,
out_channels=nb_kers,
nb_rotations=8,
kernel_size=rot_kernel_size,
padding=padding,
bias=False,
)
self.relu = nn.ReLU(inplace=True)
self.temporal_fc = nn.Linear(time_lags, nb_tk, bias=False)
self.spatial_fc = nn.Linear(225, nb_sk, bias=False)
self.layer = nn.Linear(nb_kers * 8 * nb_tk * nb_sk, 12, bias=True)
self.criterion = nn.PoissonNLLLoss(log_input=False, reduction="sum")
self.softplus = nn.Softplus()
print_num_params(self)
def get_objective(objective):
if isinstance(objective, str):
objective = objective.lower()
if objective in ['l1', 'l1loss']:
return nn.L1Loss()
elif objective in ['nll', 'nllloss']:
return nn.NLLLoss()
elif objective in ['nll2d', 'nllloss2d']:
return nn.NLLLoss2d()
elif objective in ['poissonnll', 'poissonnllloss']:
return nn.PoissonNLLLoss()
elif objective in ['kldiv', 'kldivloss']:
return nn.KLDivLoss()
elif objective in ['mse', 'mseloss']:
return nn.MSELoss()
elif objective in ['bce', 'bceloss']:
return nn.BCELoss()
elif objective in ['smoothl1', 'smoothl1loss']:
return nn.SmoothL1Loss()
elif objective in ['crossentropy', 'cross_entropy']:
return nn.CrossEntropyLoss()
elif objective in ['ctc', 'ctcloss']:
return nn.CTCLoss()
else:
raise ValueError('unknown argument!')
elif isinstance(objective, _Loss):
return objective
else:
raise ValueError('unknown argument {}'.format(objective))
def __init__(self,
model_dim,
nb_sk,
nb_tk,
lr: float = 1e-3,
wd: float = 2.0,
tmax: int = 10,
eta_min: float = 1e-6,
verbose=False,):
super(SingleCellReadout, self).__init__()
self.temporal_fcs = nn.ModuleList([
nn.Linear(11, nb_tk[0], bias=False),
nn.Linear(6, nb_tk[1], bias=False),
nn.Linear(3, nb_tk[2], bias=False),
])
self.spatial_fcs = nn.ModuleList([
nn.Linear(225, nb_sk[0], bias=False),
nn.Linear(64, nb_sk[1], bias=False),
nn.Linear(16, nb_sk[2], bias=False),
])
self.relu = nn.ReLU(inplace=True)
model_dims = [model_dim, model_dim * 2, model_dim * 4]
num_filters = sum([np.prod(item) for item in zip(nb_tk, nb_sk, model_dims)])
self.layer = nn.Linear(num_filters, 1)
self.softplus = nn.Softplus()
self.criterion = nn.PoissonNLLLoss(log_input=False, reduction="sum")
self.optim = None
self.optim_schedule = None
self._setup_optim(lr, wd, tmax, eta_min)
if verbose:
print_num_params(self)
def __init__(self, config):
super(MTLayer, self).__init__()
assert not config.multicell, "For single cell modeling only"
self.config = config
num_units = [1] + config.nb_vel_tuning_units + [1]
layers = []
for i in range(len(config.nb_vel_tuning_units) + 1):
layers += [
nn.Conv2d(num_units[i], num_units[i + 1], 1),
nn.LeakyReLU()
]
self.vel_tuning = nn.Sequential(*layers)
self.dir_tuning = nn.Linear(2, 1, bias=False)
self.temporal_kernel = nn.Linear(config.time_lags, 1, bias=False)
self.spatial_kernel = nn.Linear(config.grid_size**2, 1, bias=True)
self.criterion = nn.PoissonNLLLoss(log_input=False)
self.reg_mats_dict = create_reg_mat(config.time_lags, config.grid_size)
self.activation = get_activation_fn(config.readout_activation_fn)
self.init_weights()
self._load_vel_tuning()
print_num_params(self)
def __init__(self, config: ReadoutConfig, verbose=False):
super(ConvReadout, self).__init__()
self.config = config
_temp_dims = [11, 6, 3]
_spat_dims = [15, 8, 4]
spatiotemporal = [
nn.Sequential(
weight_norm(nn.Conv3d(
in_channels=config.core_dim * 2**i,
out_channels=config.nb_units[i],
kernel_size=config.kernel_sizes[i],
groups=config.groups[i],)),
nn.ReLU(inplace=True),
nn.AdaptiveAvgPool3d(1),
nn.Flatten(),
)
for i in config.include_lvls
]
self.spatiotemporal = nn.ModuleList(spatiotemporal)
self.dropout = nn.Dropout(config.dropout)
self.layer = nn.Linear(sum(config.nb_units), len(config.useful_cells[config.expt]), bias=True)
self.softplus = nn.Softplus()
self.criterion = nn.PoissonNLLLoss(log_input=False, reduction="sum")
self.apply(get_init_fn(config.init_range))
if verbose:
print_num_params(self)
def nll_poisson(self, preds, target, masks):
if self.normalize_nll:
loss = nn.PoissonNLLLoss(reduction='none')(preds, target)
return (loss * masks.unsqueeze(-1)).view(preds.size(0), -1).sum(
dim=-1) / (masks.view(masks.size(0), -1).sum(dim=1))
else:
raise NotImplementedError()
def ge_test_extract_fun(data, n_device, batchsize, n_targets, model_path, n_extract):
#データロード
test_set = ge_data.ge_test_dataset(data)
test_loader = DataLoader(test_set, batch_size = batchsize, shuffle=False, num_workers=50)
device_str = "cuda:{}".format(n_device)
device = torch.device(device_str if torch.cuda.is_available() else "cpu")
print("used device : ", device)
#損失関数
loss_fun = nn.PoissonNLLLoss()
#モデルの読み込み
test_model = ge_nn.Net(n_targets=n_targets)
test_model.to(device)
test_model.load_state_dict(torch.load(model_path))
test_model.eval()
#損失の記録
test_loss = []
#テストデータ番号
count = 0
with torch.no_grad():
for (test_in, test_out) in test_loader:
count = count + 1
#モデル入力
test_in, test_out = test_in.to(device), test_out.to(device)
out = test_model(test_in)
#損失計算
loss = loss_fun(out, test_out)
test_loss.append(loss.item())
#グラフ描画
out = torch.exp(out)
if count == n_extract:
test_out = test_out.to("cpu")
out = out.to("cpu")
print(test_out.shape)
print(out.shape)
test_out = torch.squeeze(test_out)
out = torch.squeeze(out)
print(test_out.shape)
print(out.shape)
with open('data_extract_log.txt', 'a') as f:
f.write('data{}:tensor detach numpy\n'.format(count))
test_out = test_out.detach().numpy()
out = out.detach().numpy()
#testデータ番号に応じてcsvファイルにデータを抽出(4229, 1024)
with open('data_extract_log.txt', 'a') as f:
f.write('data{}:test out data csv write\n'.format(count))
with open('/home/abe/data/genome_data/data310/data_test_out{}.csv'.format(count), 'w') as fc :
writer = csv.writer(fc)
writer.writerows(test_out)
with open('data_extract_log.txt', 'a') as f:
f.write('data{}:model out data csv write 2\n'.format(count))
with open('/home/abe/data/genome_data/data310/data_out{}.csv'.format(count), 'w') as fc :
writer = csv.writer(fc)
writer.writerows(out)
else :
with open('data_extract_log.txt', 'a') as f:
f.write('data{}:data went through\n'.format(count))
print('data extract finished')
with open('data_extract_log.txt', 'a') as f:
f.write('data extract finished')
def __init__(self):
self.activations = {
'sigmoid': nn.Sigmoid(),
'relu': nn.ReLU(),
'relu6': nn.ReLU6(),
'rrelu0103': nn.RReLU(0.1, 0.3),
'rrelu0205': nn.RReLU(0.2, 0.5),
'htang1': nn.Hardtanh(-1, 1),
'htang2': nn.Hardtanh(-2, 2),
'htang3': nn.Hardtanh(-3, 3),
'tanh': nn.Tanh(),
'elu': nn.ELU(),
'selu': nn.SELU(),
'hardshrink': nn.Hardshrink(),
'leakyrelu01': nn.LeakyReLU(0.1),
'leakyrelu001': nn.LeakyReLU(0.01),
'logsigmoid': nn.LogSigmoid(),
'prelu': nn.PReLU(),
}
self.loss_functions = {
'binary_cross_entropy': nn.BCELoss(),
'binary_cross_entropy_with_logits': nn.BCEWithLogitsLoss(),
'poisson_nll_loss': nn.PoissonNLLLoss(),
# 'cosine_embedding_loss': nn.CosineEmbeddingLoss(),
# 'cross_entropy': nn.CrossEntropyLoss(),
# 'ctc_loss': nn.CTCLoss(),
'hinge_embedding_loss': nn.HingeEmbeddingLoss(),
'kl_div': nn.KLDivLoss(),
'l1_loss': nn.L1Loss(),
'mse_loss': nn.MSELoss(),
# 'margin_ranking_loss': nn.MarginRankingLoss(),
# 'multilabel_margin_loss': nn.MultiLabelMarginLoss(),
'multilabel_soft_margin_loss': nn.MultiLabelSoftMarginLoss(),
# 'multi_margin_loss': nn.MultiMarginLoss(),
# 'nll_loss': nn.NLLLoss(),
'smooth_l1_loss': nn.SmoothL1Loss(),
'soft_margin_loss': nn.SoftMarginLoss(),
# 'triplet_margin_loss': nn.TripletMarginLoss(),
}
self.learning_rate = 2.8
self.momentum = 0.8
self.hidden_size = 10
self.activation_hidden = 'relu'
self.loss_function = 'binary_cross_entropy'
self.sols = {}
self.solsSum = {}
self.random = 3
self.random_grid = [_ for _ in range(10)]
# self.hidden_size_grid = [20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39]
# self.hidden_size_grid = [5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19]
# self.learning_rate_grid = [0.1, 1.0, 2.0, 3.0, 5.0]
# self.activation_hidden_grid = list(self.activations.keys())
# self.activation_hidden_grid = list(self.activations.keys())
# self.loss_function_grid = list(self.loss_functions.keys())
self.grid_search = GridSearch(self)
self.grid_search.set_enabled(False)
def ge_train(data, n_device, lr, n_epochs, batchsize, beta1, beta2, model_dir):
print('calling dataloader ...')
train = ge_data.ge_train_dataset(data)
val = ge_data.ge_train_dataset(data)
#test = ge_data.hogehoge
train_iter = DataLoader(train, batchsize)
val_iter = DataLoader(val, batchsize, shuffle=False)
####################################################################
train_model = ge_nn.Net()
device_str = "cuda:{}".format(n_device)
device = torch.device(device_str if torch.cuda.is_available() else "cpu")
print("used device : ", device)
train_model.to(device)
optimizer = optim.Adam(train_model.parameters(), lr, betas=(beta1, beta2))
loss_fun = nn.PoissonNLLLoss()
loss_fun2 = nn.MSELoss()
train_model.train()
for epoch in range(n_epochs):
counter = 0
batch_loss = 0.0
batch_acc = 0.0
print('Epoch {}/{}'.format(epoch + 1, n_epochs))
print('------------------------------------------------')
for train_in, train_out in tqdm(train_iter):
t1 = time.time()
counter = counter + 1
#変数定義
#モデル入力
train_in = train_in.to(device)
train_out = train_out.to(device)
out = train_model(train_in)
#損失計算
loss = loss_fun(out, train_out)
mse_loss = loss_fun2(out, train_out)
acc = ge_loss.log_r2_score(out, train_out)
train_model.zero_grad()
loss.backward()
optimizer.step()
batch_loss += loss.item()
batch_acc += acc
t2 = time.time()
#print('{} batch{} poissonLoss: {:.4f} mseLoss: {:.4f} Acc: {:.4f} time {}'.format(epoch+1, counter, loss, mse_loss, acc, t2-t1))
print('------------------------------------------------')
epoch_loss = batch_loss / batchsize
epoch_acc = batch_acc / batchsize
print('{} poissonLoss: {:.4f} mseLoss: {:.4f} Acc: {:.4f}'.format(
epoch + 1, epoch_loss, mse_loss, epoch_acc))
print('------------------------------------------------')
print('------------------------------------------------')
torch.save(train_model.state_dict(),
"./" + model_dir + "/model_epoch{}.pth".format(epoch))
def criterion(self,
log_input=True,
full=False,
size_average=None,
eps=1e-08,
reduce=None,
reduction='mean') -> nn.PoissonNLLLoss:
return nn.PoissonNLLLoss(log_input=log_input,
full=full,
size_average=size_average,
eps=eps,
reduce=reduce,
reduction=reduction)
def loglikelihood(self, reduction):
"""
Return the log-likelihood
"""
if self._distr == 'poisson':
if reduction == 'none':
return self.poisson_cross_entropy
return nn.PoissonNLLLoss(reduction=reduction)
elif self._distr == 'bernoulli':
return nn.BCELoss(reduction=reduction)
else:
raise ValueError('{} is not a valid distribution'.format(
self._distr))
def __init__(self,policy_value_model=None):
# create the model
if(policy_value_model == None):
self.model = resnet_policy_value_model()#torch_policy_value_model()
else:
self.model = policy_value_model
learning_rate = 1e-3
self.optimizer = optim.Adam(self.model.parameters(), lr=learning_rate)
self.policy_loss = nn.PoissonNLLLoss()
# self.policy_loss = MSELoss()
# self.policy_loss = nn.CrossEntropyLoss()
self.value_loss = MSELoss()
def __init__(self,
learning_rate=1e-3,
batch_size=1000,
data_dir='',
optimizer='AdamW',
weight_decay=1e-2,
amsgrad=False,
betas=[.9,.999],
max_iter=10000,
**kwargs):
super().__init__()
self.save_hyperparameters()
self.loss = nn.PoissonNLLLoss(log_input=False)
def __init__(self, config, verbose=True):
super(MTNet, self).__init__()
assert config.multicell, "For multicell modeling only"
self.config = config
self.core = MTRotatioanlConvCoreNew(config, verbose=verbose)
self.readout = MTReadout(config, verbose=verbose)
# self.core = MTRotatioanlConvCore(config)
# self.readout = MTReadout(config, self.core.output_size, verbose=verbose)
self.criterion = nn.PoissonNLLLoss(log_input=False, reduction="sum")
self.init_weights()
if verbose:
print_num_params(self)
def get_likelihood_surface(gd, cmod, Npos=20, radius=1, valid_eye_range=5.2):
'''
main eye-tracking loop
'''
from tqdm import tqdm # progress bar
from copy import deepcopy
assert gd.corrected is False, "cannot get an LL surface on an already corrected stimulus"
loss = nn.PoissonNLLLoss(log_input=False, reduction='none')
locs = np.linspace(-valid_eye_range, valid_eye_range, Npos) # grid up space
x,y = gd[:10] # preload some data to get dimensions
xh = cmod(x) # predict rates
sz = list(xh.size()) # here's the shape
NC = gd.NC
NY = sz[1]
NX = sz[2]
LLspace1 = np.zeros([Npos,Npos,NY,NX])
# Loop over positions (this is the main time-consuming operation)
for xx in tqdm(range(Npos)):
for yy in range(Npos):
ctrXY = (locs[xx],locs[yy])
inds = np.where(np.hypot(gd.eyeX[gd.valid]-ctrXY[0], gd.eyeY[gd.valid] - ctrXY[1]) < radius)[0]
if len(inds) > 500:
x,y = gd[inds] # get data from those indices
xh = cmod(x) # predict rates
# reshape and get loss across neurons over space
sz = list(xh.size())
L = 0
for cc in range(NC):
yc = y[:,cc][:,None].repeat((1, sz[1]*sz[2])).reshape(sz[0:3])
L += loss(xh[:,:,:,cc], yc).sum(axis=0)
L = L.detach().cpu().numpy()
LLspace1[xx,yy,:,:] = deepcopy(L)
return LLspace1, locs
def __init__(self, config, verbose=True):
super(MTNet, self).__init__()
self.config = config
self.beta = 0.0
self.encoder_stim = RotationalConvEncoder(config, verbose=verbose)
self.decoder_stim = ConvDecoder(config, verbose=verbose)
self.encoder_spks = SpksEncoder(config, verbose=verbose)
self.decoder_spks = SpksDecoder(config, verbose=verbose)
self.recon_criterion_stim = nn.MSELoss(reduction="sum")
self.recon_criterion_spks = nn.PoissonNLLLoss(log_input=False,
reduction="sum")
self.init_weights()
if verbose:
print_num_params(self)
def ge_test_fun(data, n_device, batchsize, n_targets, model_path):
#データロード
test_set = ge_data.ge_test_dataset(data)
test_loader = DataLoader(test_set,
batch_size=batchsize,
shuffle=False,
num_workers=50)
device_str = "cuda:{}".format(n_device)
device = torch.device(device_str if torch.cuda.is_available() else "cpu")
print("used device : ", device)
#損失関数
loss_fun = nn.PoissonNLLLoss()
#モデルの読み込み
test_model = ge_nn.Net(n_targets=n_targets)
test_model.to(device)
test_model.load_state_dict(torch.load(model_path))
test_model.eval()
#損失の記録
test_loss = []
test_score = []
count = 0
with torch.no_grad():
for (test_in, test_out) in test_loader:
#モデル入力
test_in, test_out = test_in.to(device), test_out.to(device)
out = test_model(test_in)
#損失計算
loss = loss_fun(out, test_out)
test_loss.append(loss.item())
#score計算
score = ge_loss.log_r2_score(out, test_out)
test_score.append(score)
#グラフ描画
out = torch.exp(out)
test_out = test_out.to("cpu")
out = out.to("cpu")
avr_test_loss = np.average(test_loss)
avr_test_score = np.average(test_score)
print('test data loss:{}, test r2 score:{}'.format(avr_test_loss,
avr_test_score))
with open('train_log.txt', 'a') as f:
f.write('test data loss:{}, test r2 score:{}'.format(
avr_test_loss, avr_test_score))
def __init__(self, model, n_datasets=1):
if n_datasets > 1:
raise ValueError('NLLLoss only supports single datasets')
metric_strs = ['batches', 'loss', 'r2', 'fc']
super().__init__(model, metric_strs, n_datasets=n_datasets)
# choose loss based on noise distribution of the model
if self.model.hparams['noise_dist'] == 'gaussian':
self._loss = nn.MSELoss()
elif self.model.hparams['noise_dist'] == 'gaussian-full':
from behavenet.fitting.losses import GaussianNegLogProb
self._loss = GaussianNegLogProb() # model holds precision mat
elif self.model.hparams['noise_dist'] == 'poisson':
self._loss = nn.PoissonNLLLoss(log_input=False)
elif self.model.hparams['noise_dist'] == 'categorical':
self._loss = nn.CrossEntropyLoss()
else:
raise ValueError('"%s" is not a valid noise dist' %
self.model.hparams['noise_dist'])
def __init__(self, input_size, hidden_size, num_layers):
super(RGCNet, self).__init__()
self.input_size = input_size
self.hidden_size = hidden_size
self.num_layers = num_layers
self.num_directions = 2
self.seq_len = 1
self.gcn = GCNet(input_size, [hidden_size] * num_layers)
self.rnn = RNN(hidden_size, hidden_size, num_layers=1)
self.logit_layer = self.Linear(hidden_size, 2)
self.count_layer = self.Linear(hidden_size, 1)
self.opt = torch.optim.Adam(self.parameters())
self.logit_loss_fn = nn.CrossEntropyLoss(reduce=True,
weight=torch.FloatTensor(
[1, 10]))
self.count_loss_fn = nn.PoissonNLLLoss(log_input=True)
def _get_loss(self, loss_spec):
if not isinstance(self.loss_spec, str):
return self.loss_spec
elif loss_spec == 'mse':
return nn.MSELoss(reduction='sum')
elif loss_spec == 'crossentropy':
return nn.CrossEntropyLoss(reduction='sum')
elif loss_spec == 'l1':
return nn.L1Loss(reduction='sum')
elif loss_spec == 'nll':
return nn.NLLLoss(reduction='sum')
elif loss_spec == 'poissonnll':
return nn.PoissonNLLLoss(reduction='sum')
elif loss_spec == 'kldiv':
return nn.KLDivLoss(reduction='sum')
else:
raise AutodiffCompositionError("Loss type {} not recognized. Loss argument must be a string or function. "
"Currently, the recognized loss types are Mean Squared Error, Cross Entropy,"
" L1 loss, Negative Log Likelihood loss, Poisson Negative Log Likelihood, "
"and KL Divergence. These are specified as 'mse', 'crossentropy', 'l1', "
"'nll', 'poissonnll', and 'kldiv' respectively.".format(loss_spec))
def __init__(self, config: FFConfig, verbose=False):
super(GLM, self).__init__()
self.config = config
spat_dim = 15
self.spatiotemporal = nn.ModuleList([
nn.Sequential(
nn.Flatten(),
weight_norm(nn.Linear(
in_features=config.time_lags * 2 * spat_dim ** 2,
out_features=1,
bias=True,)),
nn.Softplus(),)
for _ in range(len(config.useful_cells[config.expt]))
])
self.criterion = nn.PoissonNLLLoss(log_input=False, reduction="sum")
self.apply(get_init_fn(self.config.init_range))
if verbose:
print_num_params(self)
def get_loss_criterion(loss_name, loss_criterion_dict):
if loss_name == "CrossEntropyLoss":
loss_criterion = nn.CrossEntropyLoss(
reduction=loss_criterion_dict["reduction"])
if loss_name == "L1Loss":
loss_criterion = nn.L1Loss(reduction=loss_criterion_dict["reduction"])
if loss_name == "MSELoss":
loss_criterion = nn.MSELoss(reduction=loss_criterion_dict["reduction"])
if loss_name == "CTCLoss":
loss_criterion = nn.CTCLoss(
reduction=loss_criterion_dict["reduction"],
blank=loss_criterion_dict["blank"],
zero_infinity=loss_criterion_dict["zero_infinity"])
if loss_name == "NLLLoss":
loss_criterion = nn.NLLLoss(reduction=loss_criterion_dict["reduction"],
weight=None)
if loss_name == "PoissonNLLLoss":
loss_criterion = nn.PoissonNLLLoss(
reduction=loss_criterion_dict["reduction"],
log_input=loss_criterion_dict["log_input"],
full=loss_criterion_dict["full"],
eps=loss_criterion_dict["eps"])
if loss_name == "KLDivLoss":
loss_criterion = nn.KLDivLoss(
reduction=loss_criterion_dict["reduction"])
if loss_name == "BCELoss":
loss_criterion = nn.BCELoss(reduction=loss_criterion_dict["reduction"],
weight=None)
if loss_name == "BCEWithLogitsLoss":
loss_criterion = nn.BCEWithLogitsLoss(
reduction=loss_criterion_dict["reduction"],
weight=None,
pos_weight=None)
if loss_name == "SoftMarginLoss":
loss_criterion = nn.SoftMarginLoss(
reduction=loss_criterion_dict["reduction"])
if loss_name == "None":
pass
return loss_criterion
def __init__(self, config: ReadoutConfig, verbose=False):
super(Readout, self).__init__()
self.config = config
_temp_dims = [11, 6, 3]
_spat_dims = [15, 8, 4]
spatiotemporal = [
nn.Sequential(
nn.Dropout3d(p=config.dropout, inplace=True),
nn.Linear(in_features=_temp_dims[i], # config.time_lags // 2**i,
out_features=config.nb_tk[i], bias=True,),
Permute(dims=(0, 1, -1, 2, 3)),
nn.Flatten(start_dim=3),
weight_norm(nn.Linear(
in_features=_spat_dims[i] ** 2,
out_features=config.nb_sk[i], bias=True,)),
nn.Flatten(),)
for i in config.include_lvls
]
self.spatiotemporal = nn.ModuleList(spatiotemporal)
self.activation = LearnedSwish(slope=1.0)
# total filters to pool from
self.nb_filters = {i: config.nb_tk[i] * config.nb_sk[i] * config.core_dim * 2**i for i in config.include_lvls}
# self.register_buffer('mask', self._compute_mask())
nf = sum(list(self.nb_filters.values()))
nc = len(config.useful_cells[config.expt])
layers = []
for cc in range(nc):
layers += [nn.Sequential(nn.Linear(nf, 1, bias=True), LearnedSoftPlus(beta=1.0))]
self.layers = nn.ModuleList(layers)
# self.layer = nn.Linear(nb_filters, nb_cells, bias=True)
# self.activations = nn.Softplus()
self.criterion = nn.PoissonNLLLoss(log_input=False, reduction="sum")
self.apply(get_init_fn(config.init_range))
if verbose:
print_num_params(self)
def __init__(self,
nb_exc,
nb_inh,
nb_vel_tuning,
nb_tk,
nb_sk,
time_lags=12):
super(DirSelectiveNIM, self).__init__()
self.dir_tuning = nn.Linear(2, nb_exc + nb_inh, bias=False)
self.vel_tuning = nn.Sequential(
conv1x1(1, 32),
nn.ReLU(),
conv1x1(32, 32),
nn.ReLU(),
conv1x1(32, nb_vel_tuning),
nn.ReLU(),
)
self.temporal_kernels = nn.Linear(time_lags, nb_tk, bias=False)
self.spatial_kernels = nn.Linear(15**2, nb_sk, bias=True)
self.layer = nn.Linear(
(nb_exc + nb_inh) * nb_vel_tuning * nb_sk * nb_tk, 12, bias=True)
self.reg = Regularizer(reg_values={
'd2t': 1e-4,
'd2x': 1e-3
},
time_lags_list=[12],
spatial_dims_list=[15])
self.criterion = nn.PoissonNLLLoss(log_input=False, reduction="sum")
self.relu = nn.ReLU(inplace=True)
self.softplus = nn.Softplus()
# self._load_vel_tuning()
print_num_params(self)
def __init__(self, config: ReadoutConfig, verbose=False):
super(SingleCellReadout, self).__init__()
self.config = config
self.nc = len(config.useful_cells[config.expt])
# spatio-temporal filters
self.temporal = nn.ModuleList([
nn.Linear(
in_features=config.time_lags // 2**i,
out_features=config.nb_tk[i],
bias=False,)
for i in config.include_lvls
])
_spat_dims = [15, 8, 4]
self.spatial = nn.ModuleList([
nn.Linear(
in_features=_spat_dims[i]**2,
out_features=config.nb_sk[i] * self.nc,
bias=False,)
for i in config.include_lvls
])
# last layer
nb_filters = sum(config.nb_tk[i] * config.nb_sk[i] * config.core_dim * 2**i for i in config.include_lvls)
self.layers = nn.ModuleDict(
{"{:d}".format(c): nn.Sequential(
nn.ReLU(inplace=True),
nn.Dropout(config.dropout),
nn.Linear(in_features=nb_filters,
out_features=1, bias=True,),
nn.Softplus(),)
for c in range(self.nc)}
)
self.criterion = nn.PoissonNLLLoss(log_input=False, reduction="sum")
if verbose:
print_num_params(self)
