Pyfixest Cupy64 Absorbed Regressors

kennethkhoocy/pyfixest-cupy64-absorbed-regressors

| pyfixest demeaner_backend="cupy64" (including its CPU fallback when cupy is absent) is NOT numerically identical to the default numba backend and does adding demeaner_backend="cupy64" to existing pf.feols/fepois calls changes the printed coefficient table, (2) a regression report suddenly gains rows with absurd estimates (e.g. coef 435.8, SE 7106) for controls absorbed by the fixed effects, (3) diffing outputs before/after a backend change, or (4) anything parses a pyfixest text report by line position.

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npx skills add https://github.com/kennethkhoocy/applied-micro-skills --skill pyfixest-cupy64-absorbed-regressors

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