Add custom metric functions and ratio metric linearization#57
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- Tester now accepts metric_funcs dict mapping metric names to callables, enabling ratio and composite metrics without pre-computing columns - LinearizationTransformer added for ratio metrics (e.g. revenue/orders): linearized_i = numerator_i - ratio * denominator_i, where ratio is estimated on reference data passed to fit() - Preprocessor.linearize() integrates linearization into the existing chain pattern with full serialization/replay support - 8 new tests covering metric_funcs constructor/run/override behaviour and linearize formula, chaining, serialization Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- Document metric_funcs parameter in Tester class, run(), and test() docstrings with type hints, behavior description, and pandas-only note - Add test_metric_func_bootstrap to verify metric_funcs works with empiric (bootstrap) method - Replace PR's CLAUDE.md with the more complete project version Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
setuptools 82.0 removed pkg_resources, which hyperopt 0.2.7 imports at module level. This breaks `pip install ambrosia` on any Python version when setuptools>=82 is resolved. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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Summary
Tester: новый параметрmetric_funcs: Dict[str, Callable]позволяет передавать произвольные функции вместо имён колонок. Работает для методовtheoryиempiric. Функции, переданные вrun(), переопределяют те, что заданы в конструкторе.LinearizationTransformer: трансформер для ratio-метрик (например, revenue/orders). Линеаризует метрику по формулеlinearized_i = numerator_i - ratio * denominator_i, гдеratioсчитается на референсных данных приfit().Preprocessor.linearize(): интегрирует линеаризацию в существующую chain-архитектуру с поддержкой сериализации и replay.Changes
ambrosia/tester/tester.py—metric_funcsв__init__иrun(), standalonetest()ambrosia/tester/handlers.py—TheoreticalTesterHandlerподдерживает callable извлечение значенийambrosia/preprocessing/transformers.py— новыйLinearizationTransformerambrosia/preprocessing/preprocessor.py— методlinearize()+ импорт трансформераambrosia/preprocessing/__init__.py— экспортLinearizationTransformerTest plan