Suggestion: Either consolidate tags or allow more than 5
We currently have multiple tags with overlapping meanings. For example the tags: "svd", "matrix-factorization" and "linear algebra". I think that there is an eigenvalue related one as well.
With so many synonyms, it is logical to include all of them so users who are only looking for one of do not miss out on my question. This leaves less "tag allowance" to add tags that describe what I am applying linear algebra to.
So my suggestion is to either allow more than five tags to be used or to consolidate the tags. For example, all of the examples mentioned above could be catergorised as "linear-algebra".