Add Inverse and Identity#64
Open
gvcallen wants to merge 1 commit into
Open
Conversation
lockwo
reviewed
Apr 5, 2026
|
|
||
| def forward_and_log_det(self, x: PyTree) -> tuple[PyTree, PyTree]: | ||
| """Computes y = x and log|det J(f)(x)| = 0.""" | ||
| log_det = jax.tree_util.tree_map(jnp.zeros_like, x) |
Contributor
Author
There was a problem hiding this comment.
Oh yes, would you like me to commit changes like these?
Owner
There was a problem hiding this comment.
should be tested with more complicated bijector than just identity
gvcallen
added a commit
to gvcallen/distreqx
that referenced
this pull request
Jul 1, 2026
- Simplify Identity's forward/inverse log-det computation to jax.tree.map per lockwo's suggestion. - Test Inverse with a non-trivial bijector (ScalarAffine), not just Identity.
Identity is a no-op bijector (y = x). Inverse wraps another bijector, swapping its forward/inverse and forward/inverse log-det Jacobian directions, validating that the wrapped bijector's constant-jacobian flags are internally consistent.
gvcallen
force-pushed
the
identity_and_inverse
branch
from
84f3f05 to
aa623e7
Compare
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Implements the simple utility Inverse and Identity bijectors.