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FEA-Bench
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Utilities
=========

General
-------

.. currentmodule:: optax

.. autosummary::
    scale_gradient
    value_and_grad_from_state

Scale gradient
~~~~~~~~~~~~~~
.. autofunction:: scale_gradient

Value and grad from state
~~~~~~~~~~~~~~~~~~~~~~~~~
.. autofunction:: value_and_grad_from_state


Numerical Stability
-------------------

.. currentmodule:: optax

.. autosummary::
    safe_int32_increment
    safe_norm
    safe_root_mean_squares

Safe int32 increment
~~~~~~~~~~~~~~~~~~~~
.. autofunction:: safe_int32_increment

Safe norm
~~~~~~~~~
.. autofunction:: safe_norm

Safe root mean squares
~~~~~~~~~~~~~~~~~~~~~~
.. autofunction:: safe_root_mean_squares


Linear Algebra Operators
------------------------

.. currentmodule:: optax

.. autosummary::
    matrix_inverse_pth_root
    multi_normal
    power_iteration


Multi normal
~~~~~~~~~~~~
.. autofunction:: multi_normal

Matrix inverse pth root
~~~~~~~~~~~~~~~~~~~~~~~~
.. autofunction:: matrix_inverse_pth_root

Power iteration
~~~~~~~~~~~~~~~
.. autofunction:: power_iteration


Second Order Optimization
-------------------------

.. currentmodule:: optax.second_order

.. autosummary::
    fisher_diag
    hessian_diag
    hvp

Fisher diagonal
~~~~~~~~~~~~~~~
.. autofunction:: fisher_diag

Hessian diagonal
~~~~~~~~~~~~~~~~
.. autofunction:: hessian_diag

Hessian vector product
~~~~~~~~~~~~~~~~~~~~~~
.. autofunction:: hvp


Tree
----

.. currentmodule:: optax.tree_utils

.. autosummary::
    NamedTupleKey
    tree_add
    tree_add_scalar_mul
    tree_div
    tree_get
    tree_get_all_with_path
    tree_l1_norm
    tree_l2_norm
    tree_map_params
    tree_mul
    tree_ones_like
    tree_random_like
    tree_scalar_mul
    tree_set
    tree_sub
    tree_sum
    tree_vdot
    tree_zeros_like

NamedTupleKey
~~~~~~~~~~~~~
.. autoclass:: NamedTupleKey

Tree add
~~~~~~~~
.. autofunction:: tree_add

Tree add and scalar multiply
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.. autofunction:: tree_add_scalar_mul

Tree divide
~~~~~~~~~~~
.. autofunction:: tree_div

Fetch single value that match a given key
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.. autofunction:: tree_get

Fetch all values that match a given key
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.. autofunction:: tree_get_all_with_path

Tree l1 norm
~~~~~~~~~~~~
.. autofunction:: tree_l1_norm

Tree l2 norm
~~~~~~~~~~~~
.. autofunction:: tree_l2_norm

Tree map parameters
~~~~~~~~~~~~~~~~~~~
.. autofunction:: tree_map_params

Tree multiply
~~~~~~~~~~~~~
.. autofunction:: tree_mul

Tree ones like
~~~~~~~~~~~~~~
.. autofunction:: tree_ones_like

Tree with random values
~~~~~~~~~~~~~~~~~~~~~~~
.. autofunction:: tree_random_like

Tree scalar multiply
~~~~~~~~~~~~~~~~~~~~
.. autofunction:: tree_scalar_mul

Set values in a tree
~~~~~~~~~~~~~~~~~~~~
.. autofunction:: tree_set

Tree subtract
~~~~~~~~~~~~~
.. autofunction:: tree_sub

Tree sum
~~~~~~~~
.. autofunction:: tree_sum

Tree inner product
~~~~~~~~~~~~~~~~~~
.. autofunction:: tree_vdot

Tree zeros like
~~~~~~~~~~~~~~~
.. autofunction:: tree_zeros_like