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I suggest merging and tags, or making a synonym of (I am not sure how I should formulate this correctly).

  • I don't see sufficient conceptual difference between ARCH and GARCH models to maintain both tags.
  • GARCH is more general, so I suggest keeping as the tag name to remain.
  • has 41 questions while has 292; only 11 questions are tagged with without .
  • I have checked the questions tagged without and I do not see that they would be sufficiently special to deserve a separate tag.

If the community agrees (we will see), how can this be done? It would be nice to get rid of in a way that it would not reappear soon thereafter and there would not be a need to raise the question again.

Edit: vote here in the thread for suggested synonyms.

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    $\begingroup$ I know nothing about either arch or garch, but I see that among the 41 [arch] questions, 30 are tagged with [garch]. So there is only 11 questions tagged with [arch] only. It sounds like a reasonable merge case, so I +1, but again, I know nothing about this subject. $\endgroup$
    – amoeba
    Aug 13, 2016 at 21:07
  • $\begingroup$ One can either manually retag all arch to garch (with 41 threads it is a bit annoying but feasible) or make a synonym arch->garch (usually takes a lot of time to implement). $\endgroup$
    – amoeba
    Aug 13, 2016 at 21:09
  • $\begingroup$ For people less familiar with these terms, merging arch into garch is essentially the same kind of proposal as one suggesting merging autoregressive into arma (both of which currently exist, by the way, as do moving average and arima) $\endgroup$
    – Glen_b
    Aug 13, 2016 at 23:02
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    $\begingroup$ @amoeba, retagging will not stop the arch tag from being recreated when a new user enters it. So making it a synonym of garch is the better option, or not? $\endgroup$
    – Richard Hardy
    Aug 14, 2016 at 6:26
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    $\begingroup$ The moderators make tag synonyms, but we have a list of them (here) & there doesn't seem to be much enthusiasm for it. $\endgroup$
    – gung - Reinstate Monica
    Aug 18, 2016 at 14:14
  • $\begingroup$ Vote here in the thread for suggested synonyms. $\endgroup$
    – Richard Hardy
    Aug 20, 2016 at 10:39

2 Answers 2

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Could arch-garch become the replacing tag? The two abbreviations are often present together in lecture titles:

This way, the single tag could show up when typing the first letters of either arch or garch, in the "tag box".

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    $\begingroup$ Why not, sounds good to me. Not sure if this is much better than just garch, though, but I see your point. $\endgroup$
    – Richard Hardy
    Aug 14, 2016 at 12:58
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    $\begingroup$ Vote here in the thread for suggested synonyms. $\endgroup$
    – Richard Hardy
    Aug 20, 2016 at 10:39
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ARCH was made synonym of GARCH by voting on the synonym proposal.
(This way was preferred over mapping both to arch-garch as nobody was able to vote for or even suggest the latter synonyms because nobody has the necessary >=5 rep points in the non-existing arch-garch tag. - thanks to @amoeba for the note)
The change took place on January 24, 2017.
The case is closed.

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  • $\begingroup$ I will add that this happened via voting and, to the best of my knowledge, this was the first ever tag synonym to be implemented via voting (instead of moderator action). By the way, Richard, did you actively ask people to vote for it? $\endgroup$
    – amoeba
    Jan 24, 2017 at 20:48
  • $\begingroup$ Another remark: that was the reason why garch<-arch synonym was preferred over mapping both to arch-garch; nobody was able to vote for or even suggest the latter synonyms because nobody has the necessary >=5 rep points in the non-existing arch-garch tag. $\endgroup$
    – amoeba
    Jan 24, 2017 at 20:48
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    $\begingroup$ @amoeba, Yes, I sent out about five invitations to vote (without specifically asking to vote for or against). $\endgroup$
    – Richard Hardy
    Jan 25, 2017 at 5:39

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