Update '*var' according to the adadelta scheme.
tf.raw_ops.ApplyAdadelta( var, accum, accum_update, lr, rho, epsilon, grad, use_locking=False, name=None )
accum = rho() * accum + (1 - rho()) * grad.square(); update = (update_accum + epsilon).sqrt() * (accum + epsilon()).rsqrt() * grad; update_accum = rho() * update_accum + (1 - rho()) * update.square(); var -= update;
Args | |
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var | A mutable Tensor . Must be one of the following types: float32 , float64 , int32 , uint8 , int16 , int8 , complex64 , int64 , qint8 , quint8 , qint32 , bfloat16 , uint16 , complex128 , half , uint32 , uint64 . Should be from a Variable(). |
accum | A mutable Tensor . Must have the same type as var . Should be from a Variable(). |
accum_update | A mutable Tensor . Must have the same type as var . Should be from a Variable(). |
lr | A Tensor . Must have the same type as var . Scaling factor. Must be a scalar. |
rho | A Tensor . Must have the same type as var . Decay factor. Must be a scalar. |
epsilon | A Tensor . Must have the same type as var . Constant factor. Must be a scalar. |
grad | A Tensor . Must have the same type as var . The gradient. |
use_locking | An optional bool . Defaults to False . If True, updating of the var, accum and update_accum tensors will be protected by a lock; otherwise the behavior is undefined, but may exhibit less contention. |
name | A name for the operation (optional). |
Returns | |
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A mutable Tensor . Has the same type as var . |
© 2020 The TensorFlow Authors. All rights reserved.
Licensed under the Creative Commons Attribution License 3.0.
Code samples licensed under the Apache 2.0 License.
https://www.tensorflow.org/versions/r2.4/api_docs/python/tf/raw_ops/ApplyAdadelta