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TL;DR Machine learning, deep learning and reinforcement learning are all on-topic here, but we ask that questions not be primarily concerned with programming. Preamble I'm not active on DSCI.SE or AI.SE so I have no deep understanding of what is on-topic on those fora. However, I have been active on stats.SE for several years and I regularly participate ...


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Comments Your culpa doesn't seem maxima enough! Knowingly cross-posting...Shame!! I'm guessing you're responding to this comment on your recent Mathematics question. Do clarify if your ME $\ne$ Mathematics. We may wish to discuss the issue on a per-sister-site basis, and having it arise WRT a different site than usual could make this question unique. As is,...


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I see your valuable contributions quite regularly here; thanks for those. Thanks for asking first, as well. The SE network has a fairly clear policy on self-promotion, which you should look at. https://stats.stackexchange.com/help/behavior Limits for self-promotion in answers What signifies "Good" self promotion? (or: Self Promotion Part ...


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I had debated on posting a similar question awhile ago so I have collected a few links on the subject. There is actually a cross-posting tag on Meta Stackoverflow. And the highest voted question is Is cross-posting a question on multiple Stack Exchange sites permitted if the question is on-topic for each site? This is clearly in line with favoring migration ...


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As I understand your description, this would be a pure software / how-to question. As such, it would be off-topic. There is, however, a glmnet tag. You could leave comments (where it seems appropriate) on tagged questions. You could also edit the tag wiki. Moreover, in answering questions with the tag, it might be fine to mention the package along ...


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From the on-topic help center page (which Glen_b pointed out): Please note,...,that cross-posting is not encouraged on SE sites. Choose one best location to post your question. Later, if it proves better suited on another site, it can be migrated. The implied word "discouraged" means it is not acceptable to post the same question in two different SE ...


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The term you are looking for is "cross-posting". It is a little bit ambiguous, but the general consensus is that it is inappropriate. This topic has been discussed before on meta.CV; see these threads: Is the help 'misinformed' on the question of cross-posting?, Cross-posting in CV and math.SE tends to become an epidemic, and Posting the same ...


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If the question's on-topic here I most usually comment, adding a link to the cross-post & asking the OP to decide which site they want the question on. I don't close it, partly because we don't have a relevant close reason,† partly because that makes for more work later if the OP removes the cross-post & wants it re-opening here, but mostly ...


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The optimal solution is just to post a comment to the OP (and informing anyone who subsequently views the tread that it is a duplicate and) that cross-posting is frowned upon. The OP should decide which site is more appropriate and delete the other. If necessary, you can flag the moderators as well. (Note that you cannot close a question on CV as a ...


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It's in the first page of the help -- help/on-topic, third-last paragraph says: Please note, however, that cross-posting is not encouraged on SE sites. Choose one best location to post your question. Later, if it proves better suited on another site, it can be migrated. And broadly speaking, this is the position. However, it's mitigated somewhat by meta-...


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math.stackexchange.com has long been here, and mathoverflow.net, which has functioned for, I suspect, about five years, only recently got absorbed into stackexchange. The vast majority of questions appropriate for math.stackexchange.com are not appropriate for mathoverflow.net, but perhaps any question appropriate for mathoverflow.net would also be ...


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It's a common issue with the current way Stack Exchange is designed, and it's even getting worse with the creation of the AI and DS websites, which largely overlap with CV. I think the best solution is Build and strengthen the Stack Exchange community with "crossover questions" between sites.


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Once links to the cross-site duplicates have been provided, there doesn't seem to be a pressing need to close the question if it's squarely on-topic at this site; potential answerers can now decide whether or not they want to write an answer in full cognizance of actual or potential answers elsewhere, as @mdewey's answer points out. (The notion that a ...


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A proposal: whenever we see questions over at math SE which clearly are more appropriate here, we should propose to move it here! (use the "flag" option and write that proposal, it is usually accepted). Especially when questions there did not already get good answers! I try to do this agressively, that is also a way to make our site better known.


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Trying to be a dutiful member of the community, I have previously alerted of accelerating cross-posting here, where I even posted a single-phrase update yesterday. But this does not mean I disagree with the practice (or that I agree). Although Nick Stauner's answer is a tour-de-force, I have a few(...) things I would like to say on the matter: Let a ...


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From my point of view the main reason I dislike cross posting is the potential waste of my time and that of other users answering some question which has already been answered elsewhere. Given that the comments which the OP has posted specifying the cross posts are very helpful as I would not answer any question where I saw such comments. It seems less ...


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If we want to take a firmer line:— Moderators can close the cross-site duplicate using a custom reason (neater than using an inappropriate default close reason). If we think there's value in keeping it here purely to link to the duplicate on another site, we can up-vote it, which will protect it from automatic deletion. In fact any user can vote, up or down, ...


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When I come across such a question, I close it. I leave a comment along with closing, asking the OP to decide which site they prefer and delete the other version. They could then have this version reopened, if they preferred. I don't usually downvote. As @Scortchi notes, these OPs are usually new and simply unfamiliar with the SE system.


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I am writing an answer because I do not have enough reputation points to leave a comment. This may not technically be possible, but what if you had the tags themselves guide the direction of the question? For example: someone tags their question as "probability" and "Normal Distribution" on Mathematics (or SO for that matter), and because of the tag, the ...


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