Correct implementation of weight tying#625
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polvalente
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Feb 1, 2026
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| layer_params = | ||
| with %Axon.ModelState.SharedParameter{path: path} <- params[layer_name] do | ||
| get_in(params, path) | ||
| end |
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| layer_params = | |
| with %Axon.ModelState.SharedParameter{path: path} <- params[layer_name] do | |
| get_in(params, path) | |
| end | |
| layer_params = | |
| case params[layer_name] do | |
| %Axon.ModelState.SharedParameter{path: path} -> | |
| get_in(params, path) | |
| nil -> | |
| nil | |
| end |
I think this is slightly more readable
polvalente
reviewed
Feb 1, 2026
Co-authored-by: Paulo Valente <16843419+polvalente@users.noreply.github.com>
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Resolves #325
Simple weight tying implementation via shared parameters in the model state. These are resolved to the correct parameter, and allow an optional transform (e.g.
Nx.transpose/1) so the parameter shape matches effectively.