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import tensorflow as tf
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flags = tf.app.flags
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FLAGS = flags.FLAGS
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class OptimizerAE(object):
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def __init__(self, preds, labels, pos_weight, norm, d_real, d_fake):
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preds_sub = preds
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labels_sub = labels
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self.real = d_real
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# Discrimminator Loss
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# self.dc_loss_real = tf.reduce_mean(
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# tf.nn.sigmoid_cross_entropy_with_logits(labels=tf.ones_like(self.real), logits=self.real,name='dclreal'))
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self.dc_loss_real = - tf.reduce_mean(self.real)
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# self.dc_loss_fake = tf.reduce_mean(
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# tf.nn.sigmoid_cross_entropy_with_logits(labels=tf.zeros_like(d_fake), logits=d_fake,name='dcfake'))
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self.dc_loss_fake = tf.reduce_mean(d_fake)
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GP_loss = tf.reduce_mean(tf.square(tf.sqrt(tf.reduce_mean(tf.square(gradient), axis=[0, 1])) - 1))
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self.dc_loss = self.dc_loss_fake + self.dc_loss_real + GP_loss
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# self.dc_loss = self.dc_loss_fake + self.dc_loss_real
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# Generator loss
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# generator_loss = tf.reduce_mean(
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# tf.nn.sigmoid_cross_entropy_with_logits(labels=tf.ones_like(d_fake), logits=d_fake, name='gl'))
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generator_loss = -self.dc_loss_fake
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# pos_weight,允许人们通过向上或向下加权相对于负误差的正误差的成本来权衡召回率和精确度
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self.cost = norm * tf.reduce_mean(tf.nn.weighted_cross_entropy_with_logits(logits=preds_sub, targets=labels_sub, pos_weight=pos_weight))
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self.generator_loss = generator_loss + self.cost
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all_variables = tf.trainable_variables()
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dc_var = [var for var in all_variables if 'dc_' in var.name]
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en_var = [var for var in all_variables if 'e_' in var.name]
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with tf.variable_scope(tf.get_variable_scope()):
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self.discriminator_optimizer = tf.train.AdamOptimizer(learning_rate=FLAGS.discriminator_learning_rate,
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beta1=0.9, name='adam1').minimize(self.dc_loss,
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var_list=dc_var) # minimize(dc_loss_real, var_list=dc_var)
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self.generator_optimizer = tf.train.AdamOptimizer(learning_rate=FLAGS.discriminator_learning_rate,
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beta1=0.9, name='adam2').minimize(self.generator_loss, var_list=en_var)
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# 值得注意的是,这个地方,除了对抗优化之外,
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# 还单纯用cost损失又优化了一遍,
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# 待会儿看训练的时候注意看是在哪部分进行的这部分优化操作
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self.optimizer = tf.train.AdamOptimizer(learning_rate=FLAGS.learning_rate) # Adam Optimizer
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self.opt_op = self.optimizer.minimize(self.cost)
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self.grads_vars = self.optimizer.compute_gradients(self.cost)
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class OptimizerCycle(object):
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def __init__(self, preds, labels, pos_weight, norm, d_real, d_fake, GD_real, GD_fake, preds_z2g, labels_z2g, preds_cycle, labels_cycle, gradient, gradient_z):
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preds_sub = preds
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labels_sub = labels
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self.real = d_real
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# Discrimminator Loss
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self.dc_loss_real = tf.reduce_mean(
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tf.nn.sigmoid_cross_entropy_with_logits(labels=tf.ones_like(self.real), logits=self.real, name='dclreal'))
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# self.dc_loss_real = - tf.reduce_mean(self.real)
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self.dc_loss_fake = tf.reduce_mean(
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tf.nn.sigmoid_cross_entropy_with_logits(labels=tf.zeros_like(d_fake), logits=d_fake, name='dcfake'))
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# self.dc_loss_fake = tf.reduce_mean(d_fake)
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# GP_loss = tf.reduce_mean(tf.square(tf.sqrt(tf.reduce_mean(tf.square(gradient), axis = [0, 1])) - 1))
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# GP_loss_z = tf.reduce_mean(tf.square(tf.sqrt(tf.reduce_mean(tf.square(gradient_z), axis = [0, 1])) - 1))
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# self.dc_loss = self.dc_loss_fake + self.dc_loss_real + 10.0 * GP_loss
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self.GD_loss_real = tf.reduce_mean(
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tf.nn.sigmoid_cross_entropy_with_logits(labels=tf.ones_like(GD_real), logits=GD_real, name='GD_real'))
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# self.GD_loss_real = - tf.reduce_mean(GD_real)
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self.GD_loss_fake = tf.reduce_mean(
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tf.nn.sigmoid_cross_entropy_with_logits(labels=tf.zeros_like(GD_fake), logits=GD_fake, name='GD_fake'))
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# self.GD_loss_fake = tf.reduce_mean(GD_fake)
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self.dc_loss = self.dc_loss_fake + self.dc_loss_real
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self.GD_loss = self.GD_loss_fake + self.GD_loss_real
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# Generator loss
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generator_loss = tf.reduce_mean(
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tf.nn.sigmoid_cross_entropy_with_logits(labels=tf.ones_like(d_fake), logits=d_fake, name='gl'))
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# generator_loss = -self.dc_loss_fake
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generator_loss_z2g = tf.reduce_mean(
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tf.nn.sigmoid_cross_entropy_with_logits(labels=tf.ones_like(GD_fake), logits=GD_fake, name='G_z2g'))
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# generator_loss_z2g = -self.GD_loss_fake
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# pos_weight,允许人们通过向上或向下加权相对于负误差的正误差的成本来权衡召回率和精确度
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self.cost = norm * tf.reduce_mean(tf.nn.weighted_cross_entropy_with_logits(logits=preds_sub, targets=labels_sub, pos_weight=pos_weight))
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cost_cycle = norm * tf.reduce_mean(tf.square(preds_cycle - labels_cycle))
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cost_z2g = norm * tf.reduce_mean(tf.square(preds_z2g - labels_z2g))
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# with tf.device("/gpu:1"):
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# self.cost = 0.00001*self.cost + cost_cycle #for citseer cluster
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self.cost = self.cost + cost_cycle
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self.generator_loss = generator_loss + self.cost
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self.generator_loss_z2g = generator_loss_z2g
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all_variables = tf.trainable_variables()
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dc_var = [var for var in all_variables if 'dc_' in var.name]
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en_var = [var for var in all_variables if 'e_' in var.name]
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GG_var = [var for var in all_variables if 'GG' in var.name]
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GD_var = [var for var in all_variables if 'GD' in var.name]
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with tf.variable_scope(tf.get_variable_scope()):
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self.discriminator_optimizer = tf.train.AdamOptimizer(learning_rate=FLAGS.discriminator_learning_rate,
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beta1=0.9, name='adam1').minimize(self.dc_loss,
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var_list=dc_var) # minimize(dc_loss_real, var_list=dc_var)
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self.generator_optimizer = tf.train.AdamOptimizer(learning_rate=FLAGS.discriminator_learning_rate,
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beta1=0.9, name='adam2').minimize(self.generator_loss, var_list=en_var)
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self.discriminator_optimizer_z2g = tf.train.AdamOptimizer(learning_rate=FLAGS.discriminator_learning_rate,
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beta1=0.9, name='adam1').minimize(self.GD_loss, var_list=GD_var)
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self.generator_optimizer_z2g = tf.train.AdamOptimizer(learning_rate=FLAGS.discriminator_learning_rate,
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beta1=0.9, name='adam2').minimize(self.generator_loss_z2g, var_list=GG_var)
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# 值得注意的是,这个地方,除了对抗优化之外,
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# 还单纯用cost损失又优化了一遍,
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# 待会儿看训练的时候注意看是在哪部分进行的这部分优化操作
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self.optimizer = tf.train.AdamOptimizer(learning_rate=FLAGS.learning_rate) # Adam Optimizer
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self.opt_op = self.optimizer.minimize(self.cost)
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# self.grads_vars = self.optimizer.compute_gradients(self.cost)
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# self.optimizer_z2g = tf.train.AdamOptimizer(learning_rate=FLAGS.learning_rate) # Adam Optimizer
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# self.opt_op_z2g = self.optimizer.minimize(cost_z2g)
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# self.grads_vars_z2g = self.optimizer.compute_gradients(cost_z2g)
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