def build(input_shape, num_outputs, block_type, repetitions):
'''ResNet モデルを作成する Factory クラス
Arguments:
input_shape: 入力の形状
num_outputs: ネットワークの出力数
block_type : residual block の種類 ('basic' or 'bottleneck')
repetitions: 同じ residual block を何個反復させるか
'''
# block_type に応じて、residual block を生成する関数を選択する。
if block_type == 'basic':
block_fn = basic_block
elif block_type == 'bottleneck':
block_fn = bottleneck_block
# モデルを作成する。
##############################################
input = Input(shape=input_shape)
# conv1 (batch normalization -> ReLU -> conv)
conv1 = compose(
ResNetConv2D(filters=64,
kernel_size=(7, 7),
strides=(2, 2),
name="7x7_conv_64_/2"),
BatchNormalization(),
Activation('relu'),
)(input)
# pool
pool1 = MaxPooling2D(pool_size=(3, 3),
strides=(2, 2),
padding='same',
name="pool_/2")(conv1)
# conv2_x, conv3_x, conv4_x, conv5_x
block = pool1
filters = 64
for i, r in enumerate(repetitions):
block = residual_blocks(block_fn,
filters=filters,
repetitions=r,
is_first_layer=(i == 0))(block)
filters *= 2
# batch normalization -> ReLU
block = compose(BatchNormalization(), Activation('relu'))(block)
# global average pooling
pool2 = GlobalAveragePooling2D(name="avg_pool")(block)
# dense
fc1 = Dense(units=num_outputs,
kernel_initializer='he_normal',
activation='softmax',
name="fc")(pool2)
return Model(inputs=input, outputs=fc1)
def table(M):
n = len(M)
M = list(M)
T = [[-1 for x in range(n)] for x in xrange(n)]
for i, a in enumerate(M):
for j, b in enumerate(M):
T[i][j] = M.index(funcs.compose(a, b))
return T
def table(M):
n = len(M)
M = list(M)
T = [[-1 for x in range(n)] for x in xrange(n)]
for i, a in enumerate(M):
for j, b in enumerate(M):
T[i][j] = M.index( funcs.compose(a,b) )
return T
def generate(perms):
grp = set(perms)
while True:
n = len(grp)
for (a, b) in itertools.product(grp, grp):
grp.add(funcs.compose(a, b))
if len(grp) == n:
break
return grp
def generate(perms):
grp = set(perms)
while True:
n = len(grp)
for (a,b) in itertools.product(grp, grp):
grp.add( funcs.compose(a,b) )
if len(grp) == n:
break
return grp
from funcs import compose, pipe
if __name__ == '__main__':
ff = compose(lambda a: a + 1, lambda a: a * 1000, lambda a: a - 10)
print(ff(11))
ff = pipe(lambda a: a + 1, lambda a: a * 1000, lambda a: a - 10)
print(ff(11))
def isAbelian(M):
for a, b in itertools.combinations(M, 2):
if funcs.compose(a, b) != funcs.compose(b, a):
return False
return True
def isAbelian(M):
for a, b in itertools.combinations(M, 2):
if funcs.compose(a,b) != funcs.compose(b,a):
return False
return True
