Proposition of a new module: clustering quality evaluation

[Robzzson]

First of all big Thank You for great ml-kmeans and ml-hclust packages! Unfortunately clustering does not mean much without proper evaluation of clustering quality. There's been many metrics developed specially for this purpose and one of them is Silhouette Coefficient. I implemented SC function in JavaScript and I'm wondering if you'd be interested in incorporating it into ml-js? I'm also thinking of developing other clustering quality metrics (e.g. Davies–Bouldin index) in the near future.

[Robzzson]

@targos ping 😉

[maasencioh]

Hello @Robzzson we are going to start this repo, as soon as we have something interesting we can discuss ideas 👍

[maasencioh]

@ndmoncadam this is the issue