Converting .h5 model weights (no architecture) to .pth

14 hours ago 3
ARTICLE AD BOX

I have an .h5 file that contains only model weights, not the model architecture. I want to use these weights in a PyTorch model and convert them into a .pth file.

Some context:

The .h5 file does not include the architecture (it’s not a full saved model, just weights).

I already have a model defined in PyTorch that I believe matches the original architecture.

I cannot retrain the model.

I attempted manually mapping weights between the .h5 file and my PyTorch model (by iterating over layers and assigning values), but the results were incorrect — likely due to mismatched layer ordering, naming, or tensor shapes.

What I want to achieve:

- Get a .pth file corresponding to the .h5 file I have.

My questions:

Is it possible to reliably convert .h5 weights (without architecture) into .pth?

How can I ensure correct mapping between the .h5 weights and PyTorch model layers?

Are there any tools or best practices for handling this kind of cross-framework weight transfer (especially if the .h5 file originated from Keras/TensorFlow)?

Any guidance or examples would be greatly appreciated.

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