Power transformer - #505
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andrewdalpino wants to merge 5 commits into
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Copilot review overview
🟡 Changes recommended
Near-zero finite values can be lost by cancellation in forward, inverse, and likelihood calculations.
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Review effort: Lite
Findings: 1
What changed in this PR
Adds a Yeo-Johnson PowerTransformer with fitting, reversal, tests, benchmarking, and documentation.
Changes:
- Implements per-feature or fixed-lambda transformation and MLE estimation.
- Adds unit tests and a benchmark.
- Adds transformer documentation and navigation entries.
| File | Description |
|---|---|
src/Transformers/PowerTransformer.php |
Core transformer implementation |
tests/Transformers/PowerTransformerTest.php |
Functional and persistence tests |
benchmarks/Transformers/PowerTransformerBench.php |
Performance benchmark |
docs/transformers/power-transformer.md |
API documentation |
docs/preprocessing.md |
Preprocessing overview entry |
mkdocs.yml |
Documentation navigation entry |
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Yeo-Johnnson type.