Pymc-marketing (adstock and saturation)

PyMC-Marketing allows for custom adstock and saturation transformations in the MMM class since version 0.7.0

from pymc_marketing.mmm import (
    MMM, 
    GeometricAdstock,
    MichaelisMentenSaturation,
)

mmm = MMM(
    adstock=GeometricAdstock(l_max=4), 
    saturation=MichaelisMentenSaturation(), 
    ...,
)

The full list of out-of-box transformation are found:

These include WeibullCDF and WeilbullPDF

Custom transformations can also be implemented easily by inheriting from either AdstockTransformation or SaturationTransformation and defining both function and default_priors. See some examples in the documentation

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