# A thread for tag mergers and tag synonyms

Related to the thread What is our policy on ambiguous tags?, I am starting this thread, for the benefit of people who wish to call attention to tags that should be merged, synonymized, or other such actions. The hope is that if a proposal garners enough upvotes, moderators would take heed and act accordingly. Please keep it to one proposal per answer.

Can be subsumed under ? I tagged most of the questions as questions also, with the exception of one question that had the maximum of five tags. (For that question, I just retagged it as .)

• I think in this case, people who have been active at answering finite-element questions should vote up fem as a synonym. – J. M. Jan 7 '12 at 1:16

Here's another tag question: should we merge and into , or is it worth keeping them separate? For instance, PETSc is a library, and Trilinos is a collection of libraries, but they've been referred to as software. Optimization solvers can be libraries, and are sometimes executables (the same solver might exist as both, too). However, Matlab is clearly software (even though you can call Matlab from a library, most people would not, and when you call Matlab from a library, it starts the Matlab engine). Mathematica is also clearly software, implying that we shouldn't subsume under . Thoughts?

• +1 at least for now there are not enough questions to justify distinguishing these, and every libraries post ought to also be software. – David Ketcheson Jan 13 '12 at 8:06

I'm not sure what is meant to denote, but as far as I can tell it's a synonym of the (clearer) . I'd like to eliminate or make it explicitly a synonym of .

• As a teeny-tiny note: the shortcut for tags on meta work a bit differently. As an example: [meta-tag:topicality] will point to the proper place (since it is a working tag on the meta site), while [tag:topicality] will not (since the main site does not have this tag). – J. M. Jan 13 '12 at 8:55
• Thanks! I fixed it. – David Ketcheson Jan 13 '12 at 9:07

We now seem to have both and tags; which of these should be retained, and which one should be subsumed?

Please delete this misspelled tag: optimzation

• Currently no question is using it (optimzation that is), so if nobody uses it in two or so days, the system will automagically eliminate it. No worries. :) – J. M. Jan 24 '12 at 23:38
• Ah, thanks. I had just retagged the question that was using it. – Jed Brown Jan 25 '12 at 0:04

Could and be merged?

Is there a way to rename existing tags without creating a new one and manually retagging questions? We should change to .

Also, is there a way to define "is a" relationships between tags? Someone recently added the "solver" tag, which I think should not exist because it's too ambiguous. In that context, was most appropriate, but it might be nice to also have that could be used alone, but would implicitly include all questions tagged with .

• I changed ann to neural-network. – David Ketcheson Jan 31 '12 at 20:35

Yet another candidate: we have , , and . I'd like to get rid of both and . Is there a compelling reason to keep either of those seemingly redundant tags?

• I agree they are a tad too specific... – J. M. Feb 2 '12 at 18:29

I've proposed making a synonym of . (Although the former has more questions, tags are usually in singular.)

• It really ought to be. How come it stayed that long? – J. M. May 27 '16 at 20:35
• They probably look too similar to notice, unless you're specifically thinking about tag cleanup... – Christian Clason May 27 '16 at 20:38