Silhouette validation for clustering

[barthr]

Are you planning on implementing the silhouette method for validation the clustering results. Is this a wanted feature? I could implement if you like

[rgohou]

I would like to see it plus example code on how to use it also!

[piazzamp]

Sweet! @barthr, if you want to submit a pull request I'll take a look. Or we can chat design and I'll give it a whirl.

[barthr]

Hi, sorry I didn't have a lot of time lately to respond to this issue (regarding some things going on school). But I have some code to share and would like your opinion on it, i've used the silhouette validation in one of my projects and have working code.

To include it in this package the things left to do are to tweak the validation so it will work with the current implementation of the clustering algorithms and to write tests to validate the correctness.

https://github.com/barthr/grandeomega-school/blob/master/backend/core/clustering/clustering.go#L35

NOTE: it is very specified for the use case I had and to make it more general some things actually have to change in the implementation. I will propose a PR the next coming days