Variable
A TensorFlow variable is a mutable tensor-like object that stores state, such as model parameters, and can be updated or marked trainable for differentiation.
Deep Learning with R, Third Edition
A TensorFlow variable is a mutable tensor-like object that stores modifiable model state and can be updated by assignment.
- How it is used
- Stores mutable neural-network state and supplies values that training computations can update.
- How deep it goes
- Defines creation, full and indexed assignment, additive updates, and gradient tracking, but does not develop optimizer internals.
- Examples
- Uses zero- and one-filled matrices, indexed updates, additive updates, and a squared variable inside GradientTape.
- What you can do after
- Operate/configure it through tf$Variable, assign(), indexed assignment, assign_add(), and GradientTape.
Read how Deep Learning with R, Third Edition explains variable →
Deep Learning with Python, Third Edition
A mutable TensorFlow value that stores learnable parameters such as weights and bias in this example.
- How it is used
- Provides mutable state for TensorFlow models whose parameters change during gradient-based training.
- How deep it goes
- Defines mutability and demonstrates whole-value, subset, additive, and subtractive assignment before applying updates in a classifier.
- Examples
- Uses a random variable v and classifier parameters W and b, updated with assign, indexed assignment, assign_add, and assign_sub.
- What you can do after
- Apply it via TensorFlow to create mutable parameters and update them during a handwritten training loop.
Read how Deep Learning with Python, Third Edition explains variable →
Related concepts
- model parallelismused by · Model parallelism is a distributed-computing technique that partitions a machine-learning model’s parameters, layers, or computations across multiple devices.
- tensoruses · A tensor is a multidimensional, array-like structure of values indexed along zero or more dimensions and used for numerical computation.
- mathematical variableimplements · A mathematical variable is a symbol or quantity representing a value or attribute that can vary or be determined within a defined domain.
- variablekind of · A variable is a named program binding or entity associated with a value that can be accessed and, when permitted, changed during computation.
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