« first day (205 days earlier)      last day (391 days later) » 

Martin
Martin
8:45 AM
@TheAmplitwist Do you have at least one such example at hand?
MO has a large number of questions which have been synonymized - but not retagged.
I have tried the first one from the list.
If I use the tag linear-algebre, the question is among the search results.
5
Q: Finding a hyperplane that splits a convex polytope evenly

Amelio Vazquez-ReinaSay we have a convex polytope in standard form: \begin{equation*} \begin{array}{rl} \mathbf{A}\mathbf{x} = \mathbf{b} \\\\ \mathbf{x} \ge 0 \end{array} \end{equation*} Are there any known methods for finding a hyperplane $\mathbf{d} \mathbf{x} +d_0= 0$ that splits the polyhedron in a way that t...

linear-algebra geometry
This example behaves consistently with the one on Meta Stack Exchange.
But I can try to find more examples - when I have a bit more time.
But so far it seems that in situations like this, the search doesn't return the question.
By "situations like this" I mean that:
1. The post is was tagged with a tag.
2. Synonym was created later.
3. But the post wasn't edited since then - so it still has the "old" tag.
Maybe as an experiment we could try this on some post - and check what happens if the tag is replace by the "new" tag. (I.e., by the master tag in the synonym.)
 
 
3 hours later…
The Amplitwist
The Amplitwist
11:47 AM
@Martin Ah, now I understand. You're right, every post that I test satisfying these conditions displays this bug. And, it does not occur with questions merely having a tag that has a synonym. This wasn't clear to me from your post.
 
The Amplitwist
The Amplitwist
12:27 PM
Maybe the simple solution is to just finish the synonymization process with a merge.
 
Martin
Martin
Well, in many cases (like the ones on MO) that would lead to many incorrectly tagged questions.
 
The Amplitwist
The Amplitwist
12:47 PM
@Martin Oh, is that the case on MO? So, there are tags that are synonymized but questions for which a synonym is not applicable?
 
The Amplitwist
The Amplitwist
1:03 PM
I'll need to take a look at the deprecated tags, then, I guess. I didn't know that was a thing on MO (or maybe I just forgot).
 
 
1 hour later…
Martin
Martin
2:33 PM
This is what I suggested before the synonyms were created: The existing deprecated tags should be blacklisted
After the creation of the synonyms, I posted this - but got no response: What to do with the synonyms for the deprecated tags?
Occasionally I have posted some stats about the deprecated tags in the MO editors' lounge.
However, in general people are cautious about merging tags.
For example, the comments here:
1
A: How can you find questions with SE's search features that have now-defunct tags?

Mad ScientistIn most cases only one tag should be used for all questions after a synonym is created. All synonyms should point to this canonical tag, and all questions should be retagged to the canonical tag. Fortunately, moderators have a tool to merge tags, so you don't have to do that by hand. Just notify...

We have had many tag synonyms approved, but the old tags (ie the synonyms) don't automatically become the new tags (the masters) on the existing questions. You're saying that there's a trick to get this to happen automatically? — gung - Reinstate Monica Jun 11, 2012 at 13:47
No, not automatically as merging tags isn't something that can be undone easily. Moderators have a tool to merge tags, but they have to start it manually, it's not automatically done when a synonym is created. — Mad Scientist Jun 11, 2012 at 13:49
Yes, the mod interface offers the option to merge tag synonyms. This is an irreversible step, though. As a mod, I am reluctant to make merges solely to work around a "feature" of the search system. Searching ought to recognize tag synonyms — whuber Jun 11, 2012 at 17:11
 

« first day (205 days earlier)      last day (391 days later) »