生命周期库 - 使用函数时计算 CLV 的问题：GammaGammaFitter 的 customer_lifetime_value

Question

I'm trying to calculate CLV(Customer Life Value) using lifetimes python library

so, I am fitting purchase behavior data on ParetoNBDFitter and fitting purchase price data on GammaGammaFitter .

and When I'm trying to calculate CLV based on GammaGammaFitter.customer_lifetime_value() , there are same errors about

NotImplementedError: Cannot apply ufunc <ufunc 'hyp2f1'> to mixed DataFrame and Series inputs.

Interestingly, I could calculate the CLV yesterday successfully, but today the above error is coming out. The code and data have not been modified.

My code looped by date, each time I redefined the model and then calculated the CLV.

Answer 1

解决方法：使用 numpy 而不是系列，即不是使用 f.frequency，而是 f.frequency.values