def train(self, dataset):
"""
Trains the model.
"""
flag = True
while (dataset.get_validation_accuracy() < .97):
validation_acccuracy = 0
for x, y in dataset.iterate_once(50):
loss = self.get_loss(x, y)
if nn.as_scalar(loss) > 0.02:
grad_wrt_w1, grad_wrt_w2, grad_wrt_w3, grad_wrt_b1, grad_wrt_b2, grad_wrt_b3 \
= nn.gradients(loss, [self.w1, self.w2, self.w3, self.b1, self.b2, self.b3])
self.w1.update(grad_wrt_w1, self.multiplier)
self.w2.update(grad_wrt_w2, self.multiplier)
self.w3.update(grad_wrt_w3, self.multiplier)
self.b1.update(grad_wrt_b1, self.multiplier)
self.b2.update(grad_wrt_b2, self.multiplier)
self.b3.update(grad_wrt_b3, self.multiplier)
def train(self, dataset):
"""
Trains the model.
"""
"*** YOUR CODE HERE ***"
accuracy = 0
turn = 0
for x, y in dataset.iterate_forever(self.batch_size):
turn += 1
if (turn%64==0):
accuracy = dataset.get_validation_accuracy()
print(accuracy)
if (accuracy>=0.85):
break
trueY = y
loss = self.get_loss(x, trueY)
mixedGrad = nn.gradients(loss, self.m)
for i in range(0, self.layers):
self.m[i].update(mixedGrad[i], -self.multiplier)
def train(self, dataset):
"""
Trains the model.
"""
"*** YOUR CODE HERE ***"
while True:
for x, y in dataset.iterate_once(self.batch_size):
loss = self.get_loss(x, y)
gradients = nn.gradients(
loss,
[self.w0, self.b0, self.w1, self.b1, self.w2, self.b2])
self.w0.update(gradients[0], -self.learning_rate)
self.b0.update(gradients[1], -self.learning_rate)
self.w1.update(gradients[2], -self.learning_rate)
self.b1.update(gradients[3], -self.learning_rate)
self.w2.update(gradients[4], -self.learning_rate)
self.b2.update(gradients[5], -self.learning_rate)
if dataset.get_validation_accuracy() >= 0.975:
break
def train(self, dataset):
"""
Trains the model.
"""
"*** YOUR CODE HERE ***"
for x, y_ in dataset.iterate_forever(self.batch_size):
loss = self.get_loss(x, y_)
if nn.as_scalar(loss) < 0.002:
break
else:
g_w1, g_w2, g_w3, g_b1, g_b2, g_b3 = nn.gradients(
loss,
[self.w1, self.w2, self.w3, self.b1, self.b2, self.b3])
self.w3.update(g_w3, -self.lr)
self.b3.update(g_b3, -self.lr)
self.w2.update(g_w2, -self.lr)
self.b2.update(g_b2, -self.lr)
self.w1.update(g_w1, -self.lr)
self.b1.update(g_b1, -self.lr)
def train(self, dataset):
"""
Trains the model.
"""
for epoch in range(5):
for x, y in dataset.iterate_once(20):
x_prime = self.run(x)
loss = self.get_loss(x, y)
if nn.as_scalar(loss) >= 0.0:
factor = -1
else:
factor = 1
if nn.as_scalar(loss) != 0.0:
grad = nn.gradients(loss,
[self.w1, self.w2, self.w3, self.w_h])
self.w1.update(grad[0], self.learning_rate * factor)
self.w2.update(grad[1], self.learning_rate * factor)
self.w3.update(grad[2], self.learning_rate * factor)
self.w_h.update(grad[3], self.learning_rate * factor)
def train(self, dataset):
"""
Trains the model.
"""
"*** YOUR CODE HERE ***"
batch_size = int(self.batch_size_ratio * dataset.x.shape[0])
while len(dataset.x) % batch_size != 0:
batch_size += 1
while True:
for x, y in dataset.iterate_once(batch_size):
loss = self.get_loss(x, y)
params = self.get_parameters()
gradients = nn.gradients(loss, params)
for i in range(len(params)):
param = params[i]
param.update(gradients[i], -self.learning_rate)
if dataset.get_validation_accuracy() > self.threshold:
break
def train(self, dataset):
"""
Trains the model.
"""
"*** YOUR CODE HERE ***"
arr = [-0.0062, -0.0061, -0.0051, -0.0063]
while True:
for x, y in dataset.iterate_once(1):
arr2 = [
self.first_weight, self.second_weight, self.bias_1,
self.bias_2
]
gradient = nn.gradients(self.get_loss(x, y), arr2)
self.first_weight.update(gradient[0], arr[0])
self.second_weight.update(gradient[1], arr[1])
self.bias_1.update(gradient[2], arr[2])
self.bias_2.update(gradient[3], arr[3])
if dataset.get_validation_accuracy() > .97:
return
def train(self, dataset):
"""
Trains the model.
"""
avg_loss = 1
while (avg_loss > self.loss_margin):
sum_loss = 0
count = 0
for x, y in dataset.iterate_once(1):
loss = self.get_loss(x, y)
grad_wrt_w1, grad_wrt_b1, grad_wrt_w2, grad_wrt_b2 = nn.gradients(
loss, [self.w1, self.b1, self.w2, self.b2])
self.w1.update(grad_wrt_w1, -self.alpha)
self.b1.update(grad_wrt_b1, -self.alpha)
self.w2.update(grad_wrt_w2, -self.alpha)
self.b2.update(grad_wrt_b2, -self.alpha)
sum_loss += nn.as_scalar(loss)
count += 1
avg_loss = sum_loss / count
def train(self, dataset):
"""
Trains the model.
"""
multiplier = -.01
batch_size = get_large(dataset.x.shape[0])
loss_int = 1
while loss_int > .0001:
for x, y in dataset.iterate_once(batch_size):
loss = self.get_loss(x, y)
grad_wrt_w1, grad_wrt_b1, grad_wrt_w2, grad_wrt_b2 = nn.gradients(
loss, [self.w1, self.b1, self.w2, self.b2])
self.w1.update(grad_wrt_w1, multiplier)
self.b1.update(grad_wrt_b1, multiplier)
self.w2.update(grad_wrt_w2, multiplier)
self.b2.update(grad_wrt_b2, multiplier)
new_loss = self.get_loss(x, y)
loss_int = nn.as_scalar(new_loss)
def train(self, dataset):
"""
Trains the model.
"""
# self.learning_rate = 0.4
count = 0
for x, y in dataset.iterate_forever(batch_size=5):
loss = self.get_loss(x, y)
if (count % 100 == 0):
if dataset.get_validation_accuracy() > 0.81:
break
gradient_list = nn.gradients(self.get_loss(
x, y), [self.weights, self.bias, self.weights2, self.bias2])
sign = -1
self.weights.update(gradient_list[0], self.learning_rate * sign)
self.bias.update(gradient_list[1], self.learning_rate * sign)
self.weights2.update(gradient_list[2], self.learning_rate * sign)
self.bias2.update(gradient_list[3], self.learning_rate * sign)
count += 1
def train(self, dataset):
"""
Trains the model.
"""
"*** YOUR CODE HERE ***"
i = 0
m = 10000
for x, y_true in dataset.iterate_forever(self.batch_size):
loss = self.get_loss(x, y_true)
# print(str(loss))
# print(str(nn.as_scalar(loss)))
# if nn.as_scalar(loss) < 0.02:
# return
parameters = self.weights + self.biases
a = self.learning_rate
gradients = nn.gradients(loss, parameters)
for gradient, parameter in zip(gradients, parameters):
parameter.update(gradient, -a)
i += 1
if i % m == 0:
acc = dataset.get_validation_accuracy()
# if acc > 0.9:
# self.learning_rate = 0.2
if acc > 0.94:
self.learning_rate = 0.2
# if acc > 0.94:
# self.learning_rate = 0.1
if acc > 0.95:
self.learning_rate = 0.1
if acc > 0.96:
self.learning_rate = 0.005
# if acc > 0.968:
# self.hidden_layer_size = 600
# m = 10
if acc > 0.969:
m = 10
if acc >= 0.97:
return
def train(self, dataset):
"""
Trains the model.
"""
"*** YOUR CODE HERE ***"
validation_accuracy = 0
while validation_accuracy < 0.975:
for x, y in dataset.iterate_once(self.batch_size):
curr_loss = self.get_loss(x, y)
parameters = []
for i in range(self.layer_num):
parameters.append(self.network_weights[i])
parameters.append(self.network_biases[i])
grad = nn.gradients(curr_loss, parameters)
for i in range(self.layer_num):
self.network_weights[i].update(grad[2 * i],
self.learning_rate)
self.network_biases[i].update(grad[2 * i + 1],
self.learning_rate)
validation_accuracy = dataset.get_validation_accuracy()
def train(self, dataset):
"""
Trains the model.
"""
"*** YOUR CODE HERE ***"
#update weights and biases to minimize your cost function (given by get_loss)
for x, y in dataset.iterate_forever(self.batch_size):
loss_node = self.get_loss(x, y)
grad_wrt_w1, grad_wrt_w2, grad_wrt_b1, grad_wrt_b2 = nn.gradients(
loss_node, [self.w1, self.w2, self.b1, self.b2])
(self.w1).update(grad_wrt_w1, self.multiplier)
(self.b1).update(grad_wrt_b1, self.multiplier)
(self.w2).update(grad_wrt_w2, self.multiplier)
(self.b2).update(grad_wrt_b2, self.multiplier)
if nn.as_scalar(
self.get_loss(nn.Constant(dataset.x), nn.Constant(
dataset.y))) < 0.02:
return
def train(self, dataset):
"""
Trains the model.
"""
"*** YOUR CODE HERE ***"
batch_size = self.batch_size
inv_learning = -1 * self.learning_rate
changed = False
while True:
changed = False
for x, y in dataset.iterate_once(batch_size):
grad = nn.gradients(
self.get_loss(x, y),
[self.weight1, self.weight2, self.bias1, self.bias2])
self.weight1.update(grad[0], inv_learning)
self.weight2.update(grad[1], inv_learning)
self.bias1.update(grad[2], inv_learning)
self.bias2.update(grad[3], inv_learning)
if nn.as_scalar(self.get_loss(x, y)) < 0.02:
break
def train(self, dataset):
"""
Trains the model.
"""
"*** YOUR CODE HERE ***"
alpha = 0.15
while (dataset.get_validation_accuracy() < 0.85):
# print(dataset.get_validation_accuracy())
for xs, y in dataset.iterate_once(100):
grad_loss = self.get_loss(xs, y)
grad = nn.gradients(grad_loss, [
self.W, self.b, self.W_hidden, self.b_hidden, self.W_end,
self.b_end
])
self.W.update(grad[0], -alpha)
self.b.update(grad[1], -alpha)
self.W_hidden.update(grad[2], -alpha)
self.b_hidden.update(grad[3], -alpha)
self.W_end.update(grad[4], -alpha)
self.b_end.update(grad[5], -alpha)
def train(self, dataset):
"""
Trains the model.
"""
"*** YOUR CODE HERE ***"
accuracy = 0
paramlist = [
self.weight1, self.b1, self.weight2, self.b2, self.weight3, self.b3
]
while accuracy < .975:
for t1, t2 in dataset.iterate_once(50):
currloss = self.get_loss(t1, t2)
gradient = nn.gradients(currloss, paramlist)
for i in range(6):
paramlist[i].update(gradient[i], -self.learningrate)
accuracy = dataset.get_validation_accuracy()
def train(self, dataset):
"""
Trains the model.
"""
for x, y in dataset.iterate_forever(self.batch_size):
loss = self.get_loss(x, y)
multiplier = self.learning_rate
if dataset.get_validation_accuracy() < 0.975:
multiplier = -multiplier
grad_wrt_w1, grad_wrt_w2, grad_wrt_b1, grad_wrt_b2 = nn.gradients(
loss,
[self.weights1, self.weights2, self.bias1, self.bias2])
self.weights1.update(grad_wrt_w1, multiplier)
self.bias1.update(grad_wrt_b1, multiplier)
self.weights2.update(grad_wrt_w2, multiplier)
self.bias2.update(grad_wrt_b2, multiplier)
else:
return
def train(self, dataset):
"""
Trains the model.
"""
"*** YOUR CODE HERE ***"
while True:
for x, y in dataset.iterate_once(self.batch_size):
loss = self.get_loss(x, y)
grad = nn.gradients(loss, [self.w, self.wh, self.wf])
#print(grad[0], grad[1], grad[2])
self.w.update(grad[0], -0.005)
self.wh.update(grad[1], -0.005)
self.wf.update(grad[2], -0.005)
print(dataset.get_validation_accuracy())
if dataset.get_validation_accuracy() >= 0.86:
return
def train(self, dataset):
"""
Trains the model.
"""
"*** YOUR CODE HERE ***"
# params to update
params = [self.w, self.w_hidden, self.w_final]
multiplier = self.learning_rate * -1
# stop when accuracy is more than .82 for autograder
while dataset.get_validation_accuracy() < 0.86:
# retrieve batches of training examples
for n, m in dataset.iterate_once(self.batch_size):
# construct loss node
getLoss = self.get_loss(n, m)
# gradients of the loss with respect to the parameters
gradi = nn.gradients(getLoss, params)
# update our parameters
self.w.update(gradi[0], multiplier)
self.w_hidden.update(gradi[1], multiplier)
self.w_final.update(gradi[2], multiplier)
def train(self, dataset):
"""
Trains the model.
"""
"*** YOUR CODE HERE ***"
while (True):
for x, y in dataset.iterate_once(1):
gradient = nn.gradients(self.get_loss(x, y),
[self.w1, self.w2, self.b1, self.b2])
self.w1.update(gradient[0], -0.01)
self.w2.update(gradient[1], -0.01)
self.b1.update(gradient[2], -0.01)
self.b2.update(gradient[3], -0.01)
if nn.as_scalar(
self.get_loss(nn.Constant(dataset.x), nn.Constant(
dataset.y))) < 0.02:
return
def train(self, dataset):
"""
Trains the model.
"""
check = True
while check:
for x, y in dataset.iterate_once(self.batch_size):
loss = self.get_loss(x, y)
gradient = nn.gradients(loss, self.paramArray)
self.w0.update(gradient[0], self.lr)
self.w1.update(gradient[1], self.lr)
self.w2.update(gradient[2], self.lr)
self.b0.update(gradient[3], self.lr)
self.b1.update(gradient[4], self.lr)
self.b2.update(gradient[5], self.lr)
if nn.as_scalar(
self.get_loss(nn.Constant(dataset.x), nn.Constant(
dataset.y))) <= .02:
check = False
break
def train(self, dataset):
try:
dataset.get_validation_accuracy()
except Exception:
def get_accuracy(s):
sample = list(
map(lambda p: nn.as_scalar(self.get_loss(*p)),
s.iterate_once(self.batchSize)))
return 1 - sum(sample) / len(sample)
dataset.get_validation_accuracy = partial(get_accuracy, dataset)
while dataset.get_validation_accuracy() < self.targetAccuracy:
for x, y in dataset.iterate_once(self.batchSize):
gradients = nn.gradients(self.get_loss(x, y),
self.weight + self.bias)
for param, grad in zip(chain(self.weight, self.bias),
gradients):
param.update(grad, -self.learningRate)
def train(self, dataset):
"""
Trains the model.
"""
"*** YOUR CODE HERE ***"
while True:
for x, y in dataset.iterate_once(1):
loss = self.get_loss(self.computePolyFeatures(x), y)
gradients = nn.gradients(loss, [self.weight, self.bias])
self.weight.update(gradients[0], -self.alpha)
self.bias.update(gradients[1], -self.alpha)
print(
nn.as_scalar(
self.get_loss(nn.Constant(dataset.x),
nn.Constant(dataset.y))))
if nn.as_scalar(
self.get_loss(nn.Constant(dataset.x), nn.Constant(
dataset.y))) < 0.15:
return
def train(self, dataset):
"""
Trains the model.
"""
"*** YOUR CODE HERE ***"
flag = True
while flag:
for x, y in dataset.iterate_once(self.batch_size):
grad_wrt_m1, grad_wrt_b1, grad_wrt_m2, grad_wrt_b2 =\
nn.gradients(self.get_loss(x, y), [self.m1, self.b1, self.m2, self.b2])
self.m1.update(grad_wrt_m1, -self.alpha)
self.b1.update(grad_wrt_b1, -self.alpha)
self.m2.update(grad_wrt_m2, -self.alpha)
self.b2.update(grad_wrt_b2, -self.alpha)
if nn.as_scalar(
self.get_loss(nn.Constant(dataset.x), nn.Constant(
dataset.y))) < 0.02:
flag = False
def train(self, dataset):
"""
Trains the model.
"""
"*** YOUR CODE HERE ***"
validation_accuracy = dataset.get_validation_accuracy()
while validation_accuracy <= .975:
print(validation_accuracy)
for x, y in dataset.iterate_once(1):
# if dataset.get_validation_accuracy() >= .975:
# break
loss = self.get_loss(x, y)
grad_wrt_w1, grad_wrt_b1, grad_wrt_w2, grad_wrt_b2 = nn.gradients(
loss, [self.w1, self.b1, self.w2, self.b2])
self.w1.update(grad_wrt_w1, -0.005)
self.b1.update(grad_wrt_b1, -0.005)
self.w2.update(grad_wrt_w2, -0.005)
self.b2.update(grad_wrt_b2, -0.005)
validation_accuracy = dataset.get_validation_accuracy()
def train(self, dataset):
"""
Trains the model.
"""
omega = float("inf")
while (omega > 0.019):
i = 0
omega = 0
iteration = dataset.iterate_once(1)
for x, y in iteration:
omega = omega + nn.as_scalar(self.get_loss(x, y))
gradients = nn.gradients(self.get_loss(x, y),
[self.w1, self.w2, self.w3])
self.w1.update(gradients[0], self.learning_rate)
self.w2.update(gradients[1], self.learning_rate)
self.w3.update(gradients[2], self.learning_rate)
i = i + 1
omega = omega / i
def train(self, dataset):
"""
Trains the model.
"""
"*** YOUR CODE HERE ***"
adjustable_rate = -0.09
while True:
for x, y in dataset.iterate_once(self.batch_size):
loss = self.get_loss(x, y)
gradients = nn.gradients(loss, [self.w, self.w_hidden, self.output_w])
learning_rate = min(-0.004, adjustable_rate)
self.w.update(gradients[0], learning_rate)
self.w_hidden.update(gradients[1], learning_rate)
self.output_w.update(gradients[2], learning_rate)
adjustable_rate += 0.002
if dataset.get_validation_accuracy() >= 0.89:
return
def train(self, dataset):
"""
Trains the model.
"""
"*** YOUR CODE HERE ***"
while True:
for x, y in dataset.iterate_once(self.batch_size):
gradient = nn.gradients(
self.get_loss(x, y),
[self.weight0, self.weight1, self.bias0, self.bias1])
self.weight0.update(gradient[0], -0.01)
self.weight1.update(gradient[1], -0.01)
self.bias0.update(gradient[2], -0.01)
self.bias1.update(gradient[3], -0.01)
if nn.as_scalar(
self.get_loss(nn.Constant(dataset.x), nn.Constant(
dataset.y))) < 0.02:
print("done2")
return
def train(self, dataset):
"""
Trains the model.
"""
"*** YOUR CODE HERE ***"
flag1 = True
flag2 = True
# flag3 = False
while True:
for x, y in dataset.iterate_once(self.batch_size):
loss = self.get_loss(x, y)
# grad = nn.gradients(loss, [self.w1, self.b1, self.w2, self.b2, self.w3, self.b3])
grad = nn.gradients(loss, [
self.w1, self.b1, self.w2, self.b2, self.w3, self.b3,
self.w4, self.b4
])
self.w1.update(grad[0], -self.rate)
self.b1.update(grad[1], -self.rate)
self.w2.update(grad[2], -self.rate)
self.b2.update(grad[3], -self.rate)
self.w3.update(grad[4], -self.rate)
self.b3.update(grad[5], -self.rate)
self.w4.update(grad[6], -self.rate)
self.b4.update(grad[7], -self.rate)
# if flag3 and dataset.get_validation_accuracy() > 0.973:
# return
if dataset.get_validation_accuracy() > 0.96 and flag1:
print("changing")
self.rate = 0.005
self.batch_size = 15
flag1 = False
if dataset.get_validation_accuracy() > 0.97 and flag2:
print("changing")
self.rate = 0.001
self.batch_size = 20
flag2 = False
# flag3 = True
if dataset.get_validation_accuracy() > 0.973:
return
def train(self, dataset):
"""
Trains the model.
"""
"*** YOUR CODE HERE ***"
batch_size = 10
check = False
while True:
for xs, y in dataset.iterate_once(batch_size):
loss = self.get_loss(xs, y)
grad_w1, grad_w2, grad_w3, grad_b1, grad_b2 = nn.gradients(loss, [self.w1, \
self.w2, self.w3, self.b1, self.b2])
self.w1.update(grad_w1, self.learning_rate)
self.w2.update(grad_w2, self.learning_rate)
self.w3.update(grad_w3, self.learning_rate)
self.b1.update(grad_b1, self.learning_rate)
self.b2.update(grad_b2, self.learning_rate)
if check and dataset.get_validation_accuracy() > 0.84:
return
if dataset.get_validation_accuracy() > 0.81:
check = True