[<Library component: Models|Core|etc...>] Enhancement request: Include Elasso Algorithm

[lanzalibre]

Description

Enclude Elasso algorithm as per https://www.monash.edu/__data/assets/pdf_file/0003/3611901/Optimal-forecast-reconciliation-with-time-series-selection.pdf

Use case

No response

[elephaint]

Thanks - good suggestion, I'll have a look at it.

[elephaint]

@lanzalibre It's computationally a very intensive method requiring an additional dependency on a MIP solver, for what seems to be relatively minor gains. For very small datasets, this could be interesting, but for anything larger than a few timeseries I'm hesitant to include something that is so intensive - the relatively small performance gain would then be completely offset by the time required to get an answer (the time saved after one already gets a normal MinT answer can then be usefully spent on improving the base forecast estimators, which in general is far more fruitful than squeezing performance out of a reconciliation method).

I'll leave this open, if this is something that more users like to see I'll have another look at it, and open to suggestions to improve the computational complexity of this method!