def __init__(self, kb, size, num_buckets, rel2seq, batch_size, learning_rate=1e-2):
self._kb = kb
self._size = size
self._batch_size = batch_size
self._rel2seq = rel2seq
self.learning_rate = tf.Variable(float(learning_rate), trainable=False, name="lr")
self.opt = tf.train.AdamOptimizer(learning_rate=self.learning_rate, beta1=0.0)
l_count = dict()
total = 0
max_l = 0
self._vocab = {"#PADDING#": 0}
for (rel, _, _), _, typ in kb.get_all_facts():
s = self._rel2seq(rel)
l = len(s)
for word in s:
if word not in self._vocab:
self._vocab[word] = len(self._vocab)
max_l = max(max_l, l)
if l not in l_count:
l_count[l] = 0
l_count[l] += 1
total += 1
self._seq_inputs = [tf.placeholder(tf.int64, shape=[None], name="seq_input%d" % i)
for i in xrange(max_l)]
with vs.variable_scope("composition", initializer=model.default_init()):
seq_outputs = self._comp_f()
self._bucket_outputs = []
ct = 0
self._buckets = []
for l in xrange(max_l):
c = l_count.get(l)
if c:
ct += c
if ct % (total / num_buckets) < c:
self._bucket_outputs.append(seq_outputs[l])
self._buckets.append(l)
if len(self._buckets) >= num_buckets:
self._buckets[-1] = max_l
self._bucket_outputs[-1] = seq_outputs[-1]
else:
self._buckets.append(max_l)
self._bucket_outputs.append(seq_outputs[-1])
self._input = [[0]*self._batch_size for _ in xrange(max_l)] # fill input with padding
self._feed_dict = dict()
train_params = filter(lambda v: "composition" in v.name, tf.trainable_variables())
self._grad = tf.placeholder(tf.float32, shape=[None, self._size], name="rel_grad")
self._grad_in = np.zeros((self._batch_size, self._size), dtype=np.float32)
self._grads = [tf.gradients(o, train_params, self._grad) for o in self._bucket_outputs]
self._bucket_update = [self.opt.apply_gradients(zip(grads, train_params))
for o, grads in zip(self._bucket_outputs, self._grads)]
def __init__(self, kb, size, batch_size, is_train=True, num_neg=200, learning_rate=1e-2, l2_lambda=0.0,
is_batch_training=False):
self._kb = kb
self._size = size
self._batch_size = batch_size
self._is_batch_training = is_batch_training
self._is_train = is_train
self._init = model.default_init()
with vs.variable_scope(self.name(), initializer=self._init):
self.learning_rate = tf.Variable(float(learning_rate), trainable=False, name="lr")
self.global_step = tf.Variable(0, trainable=False, name="step")
with tf.device("/cpu:0"):
if is_batch_training:
self.opt = rprop.RPropOptimizer() # tf.train.GradientDescentOptimizer(self.learning_rate)
else:
self.opt = tf.train.AdamOptimizer(self.learning_rate, beta1=0.0)
self._init_inputs()
with vs.variable_scope("score", initializer=self._init):
self._scores = self._scoring_f()
if is_train or is_batch_training:
assert batch_size % (num_neg+1) == 0, "Batch size must be multiple of num_neg+1 during training"
#with vs.variable_scope("score", initializer=init):
# tf.get_variable_scope().reuse_variables()
# for i in xrange(num_neg):
# self.triple_inputs.append((tf.placeholder(tf.int64, shape=[None], name="rel_%d" % (i+1)),
# tf.placeholder(tf.int64, shape=[None], name="subj_%d" % (i+1)),
# tf.placeholder(tf.int64, shape=[None], name="obj_%d" % (i+1))))
# self.scores.append(
# self._scoring_f(self.triple_inputs[i+1][0], self.triple_inputs[i+1][1], self.triple_inputs[i+1][2]))
num_pos = int(batch_size/(num_neg+1))
scores = tf.reshape(self._scores, [num_pos, num_neg + 1])
labels = np.zeros([num_pos, num_neg+1], dtype=np.float32)
labels[:, 0] = 1
labels = tf.constant(labels, name="labels_constant", dtype=tf.float32)
loss = math_ops.reduce_sum(tf.nn.softmax_cross_entropy_with_logits(scores, labels))
train_params = filter(lambda v: self.name() in v.name, tf.trainable_variables())
self.training_weight = tf.Variable(float(learning_rate), trainable=False, name="training_weight")
self._feed_dict[self.training_weight] = np.array([1.0], dtype=np.float32)
with tf.device("/cpu:0"):
#clipped_gradients = _clip_by_value(self.grads, -max_grad, max_grad)
if is_batch_training:
self._grads = tf.gradients(loss, train_params, self.training_weight)
with vs.variable_scope("batch_gradient", initializer=self._init):
self._acc_gradients = map(lambda param: tf.get_variable(param.name.split(":")[0],
param.get_shape(), param.dtype,
tf.constant_initializer(0.0), False),
train_params)
self._loss = tf.get_variable("acc_loss", (), tf.float32, tf.constant_initializer(0.0), False)
# We abuse the gradient descent optimizer for accumulating gradients and loss (summing)
acc_opt = tf.train.GradientDescentOptimizer(-1.0)
self._accumulate_gradients = acc_opt.apply_gradients(zip(self._grads, self._acc_gradients))
self._acc_loss = acc_opt.apply_gradients([(loss, self._loss)])
self._update = self.opt.apply_gradients(
zip(map(lambda v: v.value(), self._acc_gradients), train_params), global_step=self.global_step)
self._reset = map(lambda param: param.initializer, self._acc_gradients)
self._reset.append(self._loss.initializer)
else:
self._loss = loss / math_ops.cast(num_pos, dtypes.float32)
in_params = self._input_params()
if not in_params:
self._grads = tf.gradients(self._loss, train_params, self.training_weight)
else:
self._grads = tf.gradients(self._loss, train_params + in_params, self.training_weight)
self._input_grads = self._grads[len(train_params):]
if len(train_params) > 0:
self._update = self.opt.apply_gradients(zip(self._grads[:len(train_params)], train_params),
global_step=self.global_step)
if l2_lambda > 0.0:
l2 = tf.reduce_sum(array_ops.pack([tf.nn.l2_loss(t) for t in train_params]))
l2_loss = l2_lambda * l2
if is_batch_training:
l2_grads = tf.gradients(l2_loss, train_params)
self._l2_accumulate_gradients = acc_opt.apply_gradients(zip(l2_grads, self._acc_gradients))
self._l2_acc_loss = acc_opt.apply_gradients([(l2_loss, self._loss)])
else:
self._l2_update = tf.train.GradientDescentOptimizer(self.learning_rate).minimize(l2_loss, var_list=train_params)
self.saver = tf.train.Saver(tf.all_variables())
def __init__(self,
kb,
size,
num_buckets,
rel2seq,
batch_size,
learning_rate=1e-2):
self._kb = kb
self._size = size
self._batch_size = batch_size
self._rel2seq = rel2seq
self.learning_rate = tf.Variable(float(learning_rate),
trainable=False,
name="lr")
self.opt = tf.train.AdamOptimizer(learning_rate=self.learning_rate,
beta1=0.0)
l_count = dict()
total = 0
max_l = 0
self._vocab = {"#PADDING#": 0}
for (rel, _, _), _, typ in kb.get_all_facts():
s = self._rel2seq(rel)
l = len(s)
for word in s:
if word not in self._vocab:
self._vocab[word] = len(self._vocab)
max_l = max(max_l, l)
if l not in l_count:
l_count[l] = 0
l_count[l] += 1
total += 1
self._seq_inputs = [
tf.placeholder(tf.int64, shape=[None], name="seq_input%d" % i)
for i in xrange(max_l)
]
with vs.variable_scope("composition",
initializer=model.default_init()):
seq_outputs = self._comp_f()
self._bucket_outputs = []
ct = 0
self._buckets = []
for l in xrange(max_l):
c = l_count.get(l)
if c:
ct += c
if ct % (total / num_buckets) < c:
self._bucket_outputs.append(seq_outputs[l])
self._buckets.append(l)
if len(self._buckets) >= num_buckets:
self._buckets[-1] = max_l
self._bucket_outputs[-1] = seq_outputs[-1]
else:
self._buckets.append(max_l)
self._bucket_outputs.append(seq_outputs[-1])
self._input = [[0] * self._batch_size
for _ in xrange(max_l)] # fill input with padding
self._feed_dict = dict()
train_params = filter(lambda v: "composition" in v.name,
tf.trainable_variables())
self._grad = tf.placeholder(tf.float32,
shape=[None, self._size],
name="rel_grad")
self._grad_in = np.zeros((self._batch_size, self._size),
dtype=np.float32)
self._grads = [
tf.gradients(o, train_params, self._grad)
for o in self._bucket_outputs
]
self._bucket_update = [
self.opt.apply_gradients(zip(grads, train_params))
for o, grads in zip(self._bucket_outputs, self._grads)
]
def __init__(self,
kb,
size,
batch_size,
is_train=True,
num_neg=200,
learning_rate=1e-2,
l2_lambda=0.0,
is_batch_training=False):
self._kb = kb
self._size = size
self._batch_size = batch_size
self._is_batch_training = is_batch_training
self._is_train = is_train
self._init = model.default_init()
with vs.variable_scope(self.name(), initializer=self._init):
self.learning_rate = tf.Variable(float(learning_rate),
trainable=False,
name="lr")
self.global_step = tf.Variable(0, trainable=False, name="step")
with tf.device("/cpu:0"):
if is_batch_training:
self.opt = rprop.RPropOptimizer(
) # tf.train.GradientDescentOptimizer(self.learning_rate)
else:
self.opt = tf.train.AdamOptimizer(self.learning_rate,
beta1=0.0)
self._init_inputs()
with vs.variable_scope("score", initializer=self._init):
self._scores = self._scoring_f()
if is_train or is_batch_training:
assert batch_size % (
num_neg + 1
) == 0, "Batch size must be multiple of num_neg+1 during training"
#with vs.variable_scope("score", initializer=init):
# tf.get_variable_scope().reuse_variables()
# for i in xrange(num_neg):
# self.triple_inputs.append((tf.placeholder(tf.int64, shape=[None], name="rel_%d" % (i+1)),
# tf.placeholder(tf.int64, shape=[None], name="subj_%d" % (i+1)),
# tf.placeholder(tf.int64, shape=[None], name="obj_%d" % (i+1))))
# self.scores.append(
# self._scoring_f(self.triple_inputs[i+1][0], self.triple_inputs[i+1][1], self.triple_inputs[i+1][2]))
num_pos = int(batch_size / (num_neg + 1))
scores = tf.reshape(self._scores, [num_pos, num_neg + 1])
labels = np.zeros([num_pos, num_neg + 1], dtype=np.float32)
labels[:, 0] = 1
labels = tf.constant(labels,
name="labels_constant",
dtype=tf.float32)
loss = math_ops.reduce_sum(
tf.nn.softmax_cross_entropy_with_logits(scores, labels))
train_params = filter(lambda v: self.name() in v.name,
tf.trainable_variables())
self.training_weight = tf.Variable(float(learning_rate),
trainable=False,
name="training_weight")
self._feed_dict[self.training_weight] = np.array([1.0],
dtype=np.float32)
with tf.device("/cpu:0"):
#clipped_gradients = _clip_by_value(self.grads, -max_grad, max_grad)
if is_batch_training:
self._grads = tf.gradients(loss, train_params,
self.training_weight)
with vs.variable_scope("batch_gradient",
initializer=self._init):
self._acc_gradients = map(
lambda param: tf.get_variable(
param.name.split(":")[0], param.
get_shape(), param.dtype,
tf.constant_initializer(0.0), False),
train_params)
self._loss = tf.get_variable("acc_loss", (), tf.float32,
tf.constant_initializer(0.0),
False)
# We abuse the gradient descent optimizer for accumulating gradients and loss (summing)
acc_opt = tf.train.GradientDescentOptimizer(-1.0)
self._accumulate_gradients = acc_opt.apply_gradients(
zip(self._grads, self._acc_gradients))
self._acc_loss = acc_opt.apply_gradients([(loss,
self._loss)])
self._update = self.opt.apply_gradients(
zip(map(lambda v: v.value(), self._acc_gradients),
train_params),
global_step=self.global_step)
self._reset = map(lambda param: param.initializer,
self._acc_gradients)
self._reset.append(self._loss.initializer)
else:
self._loss = loss / math_ops.cast(num_pos, dtypes.float32)
in_params = self._input_params()
if not in_params:
self._grads = tf.gradients(self._loss, train_params,
self.training_weight)
else:
self._grads = tf.gradients(self._loss,
train_params + in_params,
self.training_weight)
self._input_grads = self._grads[len(train_params):]
if len(train_params) > 0:
self._update = self.opt.apply_gradients(
zip(self._grads[:len(train_params)], train_params),
global_step=self.global_step)
if l2_lambda > 0.0:
l2 = tf.reduce_sum(
array_ops.pack([tf.nn.l2_loss(t) for t in train_params]))
l2_loss = l2_lambda * l2
if is_batch_training:
l2_grads = tf.gradients(l2_loss, train_params)
self._l2_accumulate_gradients = acc_opt.apply_gradients(
zip(l2_grads, self._acc_gradients))
self._l2_acc_loss = acc_opt.apply_gradients([(l2_loss,
self._loss)])
else:
self._l2_update = tf.train.GradientDescentOptimizer(
self.learning_rate).minimize(l2_loss,
var_list=train_params)
self.saver = tf.train.Saver(tf.all_variables())