ENH: Add JAMICA as an ICA method - #14247
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August 28, 2026 21:13
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Just two tiny tweaks then I think we can merge!
| self.n_iter_ = n_iter + 1 # picard() starts counting at 0 | ||
| del _, n_iter | ||
| elif self.method == "jamica": | ||
| from jamica import amica |
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You should use _soft_import, it raises a nice error than a bare ImportError
| assert amari_distance < 0.1 | ||
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| def test_ica_jamica_missing_dependency(monkeypatch): |
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I don't think we need this one, we can trust _safe_import to do the right thing
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Reference issue (if any)
Related to #14207.
What does this implement/fix?
Adds
method="jamica"as an optional, single-model ICA backend using the publicjamica.amicaAPI from JAMICA 0.3.0. MNE retains ownership of pre-whitening, PCA, dimension selection, reconstruction, and persistence; multi-model AMICA remains available through JAMICA directly.The tests cover the external-solver matrix contract, deterministic direct-call equivalence, iteration metadata, optional-dependency handling, multi-model error propagation, source reconstruction, and FIF round trips without JAMICA installed.
JAMICA backend release: https://github.com/snesmaeili/jamica/releases/tag/v0.3.0
Additional information
Validation included the complete ICA test module, focused integration tests against the published JAMICA 0.3.0 package, configuration and docstring tests, pre-commit checks, and wheel/sdist validation.
AI assistance disclosure: OpenAI Codex was used to inspect both codebases, help implement the integration and tests, and run validation. I reviewed and approved the resulting changes before submission.