def run_one_epoch(self, epoch, train_data, batch_size, weight_decay, floss, optimizer, lr_scheduler):
fdloss = utils.lookup_dfunc(floss)
n = len(train_data)
total_loss = 0
total_succ = 0
for batch in utils.break_into_batches(train_data, batch_size, shuffle=True):
X = np.array([x for x, _ in batch])
Y_expect = np.array([y for _, y in batch])
# forward
Xw = np.dot(X, self.w)
Xwpb = Xw + self.b
Y = self.fact(Xwpb)
Loss = floss(Y, Y_expect)
# backward
dY = fdloss(Loss, Y, Y_expect)
dXwpb = self.fdact(dY, Y, Xwpb)
dXw = dXwpb
db = np.sum(dXwpb, axis=0)
dw = utils.ddot1(dXw, Xw, X, self.w)
# metrics
total_loss += np.sum(Loss)
total_succ += np.sum(Y_expect[range(Y_expect.shape[0]), np.argmax(Y, axis=-1)])
# optimize
lr = lr_scheduler(epoch)
optimizer([self.w, self.b], [dw, db], n, batch_size, lr, weight_decay)
return total_succ / n, total_loss / n
def run_one_epoch(self, epoch, train_data, batch_size, weight_decay, floss,
optimizer, lr_scheduler):
fdloss = utils.lookup_dfunc(floss)
n = len(train_data)
total_loss = 0
total_succ = 0
for batch in utils.break_into_batches(train_data,
batch_size,
shuffle=True):
X = np.array([x for x, _ in batch])
Y_expect = np.array([y for _, y in batch])
# forward
act = X
actws = []
actwbs = []
acts = [act]
for w, b, fact in zip(self.weights, self.biases, self.facts):
actw = np.dot(act, w)
actwb = actw + b
act = fact(actwb)
actws.append(actw)
actwbs.append(actwb)
acts.append(act)
Y = act
Loss = floss(Y, Y_expect)
# backward
dws = []
dbs = []
dact = fdloss(Loss, Y, Y_expect)
for actwb, actw, prev_act, w, fdact in reversed(
list(zip(actwbs, actws, acts, self.weights, self.fdacts))):
dactwb = fdact(dact, act, actwb)
dactw = dactwb
db = np.sum(dactwb, axis=0)
dw = utils.ddot1(dactw, actw, prev_act, w)
dact = utils.ddot0(dactw, actw, prev_act, w)
act = prev_act
dws.append(dw)
dbs.append(db)
dws.reverse()
dbs.reverse()
# metrics
total_loss += np.sum(Loss)
total_succ += np.sum(Y_expect[range(Y_expect.shape[0]),
np.argmax(Y, axis=-1)])
# optimize
lr = lr_scheduler(epoch)
optimizer(self.weights + self.biases, dws + dbs, n, batch_size, lr,
weight_decay)
return total_succ / n, total_loss / n
def run_one_epoch(self, epoch, train_data, batch_size, weight_decay, floss, optimizer, lr_scheduler):
fdloss = utils.lookup_dfunc(floss)
n = len(train_data)
total_loss = 0
total_succ = 0
for batch in utils.break_into_batches(train_data, batch_size, shuffle=True):
X = np.array([x for x, _ in batch])
Y_expect = np.array([y for _, y in batch])
# forward
act = X
actws = []
actwbs = []
acts = [act]
for w, b, fact in zip(self.weights, self.biases, self.facts):
actw = np.dot(act, w)
actwb = actw + b
act = fact(actwb)
actws.append(actw)
actwbs.append(actwb)
acts.append(act)
Y = act
Loss = floss(Y, Y_expect)
# backward
dws = []
dbs = []
dact = fdloss(Loss, Y, Y_expect)
for actwb, actw, prev_act, w, fdact in reversed(
list(zip(actwbs, actws, acts, self.weights, self.fdacts))):
dactwb = fdact(dact, act, actwb)
dactw = dactwb
db = np.sum(dactwb, axis=0)
dw = utils.ddot1(dactw, actw, prev_act, w)
dact = utils.ddot0(dactw, actw, prev_act, w)
act = prev_act
dws.append(dw)
dbs.append(db)
dws.reverse()
dbs.reverse()
# metrics
total_loss += np.sum(Loss)
total_succ += np.sum(Y_expect[range(Y_expect.shape[0]), np.argmax(Y, axis=-1)])
# optimize
lr = lr_scheduler(epoch)
optimizer(self.weights + self.biases, dws + dbs, n, batch_size, lr, weight_decay)
return total_succ / n, total_loss / n
def run_one_epoch(self, epoch, train_data, batch_size, weight_decay, floss,
optimizer, lr_scheduler):
fdloss = utils.lookup_dfunc(floss)
params = [
param for layer in self.all_layers() for param in layer.params
]
n = len(train_data)
total_loss = 0
total_acc = 0
for batch in utils.break_into_batches(train_data,
batch_size,
shuffle=True):
batch_grads = []
for x, y_expect in batch:
# forward
y = self.forward(x)
loss = floss(y, y_expect)
# backward
dy = fdloss(loss, y, y_expect)
self.backward(dy, y, x)
# update grad
grads = [
grad for layer in self.all_layers()
for grad in layer.params_grad
]
if not batch_grads:
batch_grads = grads
else:
for batch_grad, grad in zip(batch_grads, grads):
batch_grad += grad
# metrics
total_loss += loss
total_acc += y_expect[np.argmax(y)] == 1
# optimize
lr = lr_scheduler(epoch)
optimizer(params, batch_grads, n, batch_size, lr, weight_decay)
return total_acc / n, total_loss / n
def run_one_epoch(self, epoch, train_data, batch_size, weight_decay, floss,
optimizer, lr_scheduler):
fdloss = utils.lookup_dfunc(floss)
n = len(train_data)
total_loss = 0
total_acc = 0
for batch in utils.break_into_batches(train_data,
batch_size,
shuffle=True):
grad_w = np.zeros(self.w.shape)
grad_b = np.zeros(self.b.shape)
for x, y_expect in batch:
# forward
wx = np.dot(self.w, x)
wxpb = wx + self.b
y = self.fact(wxpb)
loss = floss(y, y_expect)
# backward
dy = fdloss(loss, y, y_expect)
dwxpb = self.fdact(dy, y, wxpb)
dwx = dwxpb
db = dwxpb
dw = utils.ddot0(dwx.reshape((-1, 1)), wx, self.w,
x.reshape((-1, 1)))
# update grad
grad_w += dw
grad_b += db
# metrics
total_loss += loss
total_acc += y_expect[np.argmax(y)] == 1
# optimize
lr = lr_scheduler(epoch)
optimizer([self.w, self.b], [grad_w, grad_b], n, batch_size, lr,
weight_decay)
return total_acc / n, total_loss / n
def run_one_epoch(self, epoch, train_data, batch_size, weight_decay, floss,
optimizer, lr_scheduler):
fdloss = utils.lookup_dfunc(floss)
n = len(train_data)
total_loss = 0
total_succ = 0
for batch in utils.break_into_batches(train_data,
batch_size,
shuffle=True):
X = np.array([x for x, _ in batch])
Y_expect = np.array([y for _, y in batch])
# forward
Xw = np.dot(X, self.w)
Xwpb = Xw + self.b
Y = self.fact(Xwpb)
Loss = floss(Y, Y_expect)
# backward
dY = fdloss(Loss, Y, Y_expect)
dXwpb = self.fdact(dY, Y, Xwpb)
dXw = dXwpb
db = np.sum(dXwpb, axis=0)
dw = utils.ddot1(dXw, Xw, X, self.w)
# metrics
total_loss += np.sum(Loss)
total_succ += np.sum(Y_expect[range(Y_expect.shape[0]),
np.argmax(Y, axis=-1)])
# optimize
lr = lr_scheduler(epoch)
optimizer([self.w, self.b], [dw, db], n, batch_size, lr,
weight_decay)
return total_succ / n, total_loss / n
def run_one_epoch(self, epoch, train_data, batch_size, weight_decay, floss, optimizer, lr_scheduler):
fdloss = utils.lookup_dfunc(floss)
n = len(train_data)
total_loss = 0
total_acc = 0
for batch in utils.break_into_batches(train_data, batch_size, shuffle=True):
grad_w = np.zeros(self.w.shape)
grad_b = np.zeros(self.b.shape)
for x, y_expect in batch:
# forward
wx = np.dot(self.w, x)
wxpb = wx + self.b
y = self.fact(wxpb)
loss = floss(y, y_expect)
# backward
dy = fdloss(loss, y, y_expect)
dwxpb = self.fdact(dy, y, wxpb)
dwx = dwxpb
db = dwxpb
dw = utils.ddot0(dwx.reshape((-1,1)), wx, self.w, x.reshape((-1,1)))
# update grad
grad_w += dw
grad_b += db
# metrics
total_loss += loss
total_acc += y_expect[np.argmax(y)] == 1
# optimize
lr = lr_scheduler(epoch)
optimizer([self.w, self.b], [grad_w, grad_b], n, batch_size, lr, weight_decay)
return total_acc / n, total_loss / n
def run_one_epoch(self, epoch, train_data, batch_size, weight_decay, floss, optimizer, lr_scheduler):
fdloss = utils.lookup_dfunc(floss)
params = [ param for layer in self.all_layers() for param in layer.params ]
n = len(train_data)
total_loss = 0
total_acc = 0
for batch in utils.break_into_batches(train_data, batch_size, shuffle=True):
batch_grads = []
for x, y_expect in batch:
# forward
y = self.forward(x)
loss = floss(y, y_expect)
# backward
dy = fdloss(loss, y, y_expect)
self.backward(dy, y, x)
# update grad
grads = [ grad for layer in self.all_layers() for grad in layer.params_grad ]
if not batch_grads:
batch_grads = grads
else:
for batch_grad, grad in zip(batch_grads, grads):
batch_grad += grad
# metrics
total_loss += loss
total_acc += y_expect[np.argmax(y)] == 1
# optimize
lr = lr_scheduler(epoch)
optimizer(params, batch_grads, n, batch_size, lr, weight_decay)
return total_acc / n, total_loss / n
def __init__(self, fact):
self.fact = fact
self.fdact = utils.lookup_dfunc(fact)
def __init__(self, sizes, facts):
self.sizes = sizes
self.facts = facts
self.fdacts = [utils.lookup_dfunc(fact) for fact in facts]
def __init__(self, output_size, fact):
self.output_size = output_size
self.fact = fact
self.fdact = utils.lookup_dfunc(fact)
def __init__(self, fit_chan, fit_rect, fit_stride, fact):
self.fit_chan = fit_chan
self.fit_rect = fit_rect
self.fit_stride = fit_stride
self.fact = fact
self.fdact = utils.lookup_dfunc(fact)
def __init__(self, output_size, fact):
self.output_size = output_size
self.fact = fact
self.fdact = utils.lookup_dfunc(fact)
def __init__(self, fit_chan, fit_rect, fit_stride, fact):
self.fit_chan = fit_chan
self.fit_rect = fit_rect
self.fit_stride = fit_stride
self.fact = fact
self.fdact = utils.lookup_dfunc(fact)
def __init__(self, sizes, facts):
self.sizes = sizes
self.facts = facts
self.fdacts = [utils.lookup_dfunc(fact) for fact in facts]
def __init__(self, fact):
self.fact = fact
self.fdact = utils.lookup_dfunc(fact)