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Martin Sleziak
Martin Sleziak
10:24 AM
And the hint tag was created again by Abcd:
6
Q: Evaluating the integral $I (k)= \int_\infty^0\dfrac{1}{x^2 +k^2}\ln x ~ dx$

Abcd $$\int_0^\infty\left(\dfrac{\pi}{1 + \pi^2x^2}- \dfrac{1}{1+x^2}\right)\ln x dx$$ Attempt: $x \to \dfrac{1}{x}$ gives: $\displaystyle\int_\infty^0 \left(\dfrac{\pi}{\pi^2+x^2}- \dfrac{1}{1+x^2}\right)\ln x ~dx$ So its basically reduced to evaluating: $I (k)= \displaystyle\int_\infty^0...

calculus integration definite-integrals hint
To me it seems that the conclusion of previous discussion was that such tag should not exist:
18
Q: Suggestion for "Hint-Only" Tag

Calvin LinFor people who only want guidance in understanding how to approach the problem, as opposed to seeing a fully fleshed out solution. Would this tag be useful? Am new to this site, so don't want to create this tag especially if people think that it won't be used. I don't really use tags as yet, s...

support tagging hint
@quid (or any other moderator) - what should I do in situation like this? Should I start new thread on meta? Should I simply flag for moderators attention?
 
BAYMAX
BAYMAX
11:19 AM
I was thinking to ask a question on main like what does "tongue" mean in "Arnold tongues - mathworld.wolfram.com/ArnoldTongue.html";, then what tag is suitable as many would argue that I have not tried anything on the question?
@MartinSleziak any ideas?
 
John Ma
John Ma
It seems that starting a new thread in meta is appropriate. It seems to be the third time this hint was created recently?
 
Martin Sleziak
Martin Sleziak
12:10 PM
@BAYMAX I would go with terminology. And since both MathWorld and Wikipedia classify it in some chaos-related categories, maybe chaos-theory?
@JohnMa Maybe we could wait whether some of the moderators says something about this. If not, either me or you could create a new thread on meta.
There is now another question with the hint tag:
 
 
2 hours later…
quid
quid
2:20 PM
@MartinSleziak it is not clear to me what exactly you ask about.
1. The tag should not exist. There is no need to revisit this question.
2. If you told the user not to use the tag, and they continue, flag for mod and we'll tell them once more or escalate. (It is not clear to me if you told them directly.)
3. If one users recreates the tag and you did not directly tell them to stop. Either tell them directly via a comment, or ask us to do so via a flag.
4. If the recreation is a persistent problem, we can blacklist. You could create a meta-thread for this, ask in tagmanagement, or just flag or ask in chat.
Likely I'd go for the tagmanagement thread. There is no need for a big discussions but maybe there are some that want to have a trace on meta.
 
 
1 hour later…
Martin Sleziak
Martin Sleziak
3:48 PM
Thanks for the response @quid.
1. Yes, one of my questions was whether or not we should discuss this issue on meta once again. So I take it that this is not needed.
2. I have only mentioned this in the edit summary: math.stackexchange.com/posts/2852904/revisions
So I'll try a comment - that is more explicit. We'll see what happenst next.
I have removed the tag from the two questions that had the tag: math.stackexchange.com/posts/2857571/revisions and math.stackexchange.com/posts/2856986/revisions
Abcd: There were some discussions on meta whether or not a tag for hints would be useful and the consensus seems to be that we do not need such tag: Suggestion for “Hint-Only” Tag and Just a hint please. So I think such tag should not be created. See also today's discussion about this tag with one of the moderators. — Martin Sleziak 49 secs ago
 
quid
quid
4:22 PM
Thanks for reply.
My English is terrible these days. Add "the" or "ing".
 
Abcd
Abcd
@MartinSleziak i have replied there
 
Martin Sleziak
Martin Sleziak
4:51 PM
Thanks for the response.
@MartinSleziak Oh Okay, I wouldn't use that tag again. Actually, I hadn't read your edit summaries before. That's why I was uninformed. Sorry. — Abcd 31 mins ago
@Abcd If you wish we can both remove our comments there. (They were posted mainly to let you know about the issue. And they are unrelated to the question.)
Feel free to ping me here if you agree that the comments can be removed - and I'll delete my comment then.
After all, both comments related to the creation of the new tag are archived here in chat.
 
Abcd
Abcd
5:25 PM
@MartinSleziak yes please remove
 
Martin Sleziak
Martin Sleziak
Ok, my comment is deleted.
 
Abcd
Abcd
Same here
 
 
1 hour later…
Martin Sleziak
Martin Sleziak
6:31 PM
Another tag created today by Jsevillamol is causal-diagrams.
0
Q: Controlling confounders in a causal diagram. Isn't the backdoor criterion sufficient?

JsevillamolIn Judea Pearl's The Book of Why we find the following causal diagram: where $U_1$ and $U_2$ are unobserved variables. The diagram is accompanied by a comment that ensures that neither the back door criterion nor the front door criterion are sufficient to figure out the causal effect $P(Y | d...

probability statistical-inference causal-diagrams
Causal model
A causal model is an abstract model that describes the causal mechanisms of a system. The model must express more than correlation because correlation does not imply causation. Sewall Wright's path analysis is the theoretical ancestor of causal modeling and causal graphs.Judea Pearl defines a causal model as an ordered triple ⟨ U , V , E ⟩ {\displaystyle \langle U,V,E\rangle } , where U is a set of exogenous variables whose values are determined by factors outside the model; V is a set of endogenous variables...
> A causal diagram is a graphical tool that enables the visualisation of causal relationships between variables in a causal model. A typical causal diagram will comprise a set of variables (or nodes) defined as being within the scope of the model being represented.
> Any variable in the diagram should be connected by an arrow to another variable with which it has a causal influence - the arrowhead delineates the direction of this causal relationship, e.g., an arrow connecting variables A and B with the arrowhead at B indicates a relationship whereby (all other factors being equal) a qualitative or quantitative change in A may cause change in B.
 

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