What's the difference between the new version of Robyn and the original 2011 Robyn

[wenyanyy]

Describe issue

I want to ask a general questions. We have been using Robyn since 2011 when Robyn wasn't a standalone R package. I've seen a lot of new features added to Robyn, other than that, any additions or modifications regarding the algorithm? For example, is there any modification to the Budget allocation algorithm, or does it utilize SLSQP? Thanks

Looking forward to your reply. Thanks

Regina

[gufengzhou]

Thanks for following us since the beginning! I can't name all the changes since 2021 (not 2011). But Robyn is definitely performing better now on the objective functions, with greater finetuning levers (add_penalty_factor), improved visualisation, added confidence interval for ROAS/CPA, added immediate vs carryover split, more precise lift calibration, as well as target ROAS scenario in the budget allocator. And yes, the allocator uses SLSQP + AUGLAG.