# All Questions

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### What is the difference between crossvalidated and data science? [duplicate]

I often have to choose where to post a question and since Crossvalidated is present for a while, I stick with this site. But is there any separataion?
34 views

### Asking about which hypothesis testing technique? - My question is on hold

How should my question be rephrased such that you will reopen it? 3+ dependent variables, which test for measuring dependency? I'm essentially trying to figure out how to show the relationship ...
31 views

### Is my question clear?

My question is not getting as much attention as I hoped the bounty would give it. Is my question clear? Is cross validated the best stack for me to submit it to? Is there some way I can increase my ...
252 views

### Why is my question still on hold?

Edit (for completeness) The discussion was about a question I asked that was put on hold. The reasons for closure and what is needed to reopen the question is answered in the many comments below. ...
70 views

### Where is my comment?

I commented several times to one question. I did not receive any thing after my last comment. When I try to check it though my "all actions", I did not find it after I checked my "all actions" several ...
97 views

### Is it on topic for a question to ask for a canonical example?

I want to ask a question with the title Is there a canonical example demonstrating the difference between predictive and explanatory models? I have ideas about the body of this question, with some ...
180 views

### Why is my question “Can a human be intellectual property?” still closed? [closed]

I have a question about my Cross Validated post: Can a human be intellectual property? Why is it still closed?
121 views

### Do we have a canonical thread that explains how to interpret 2- and 3-way interactions?

There are a number of questions posted by new users asking how to interpret basic linear model output with interactions. An example from just now: One main effect is positive while other is negative ...
114 views

### Should we de-synonymize dummy-variable-trap and categorical-encoding?

Sorry for bringing this up again. I created a dummy-variable-trap tag yesterday. As I wrote, I was doubtful that synonymizing it to categorical-encoding is helpful. By now I am not doubtful any more:...
83 views

### Why is something flagged as “opinion”?

I entered the following question: How do you calculate an exact two-tailed p-value using binomial distribution? The system generated a warning that this "appears to be an opinion" and "is likely to be ...
225 views

### Do we need a “dummy variable trap” tag?

To be honest, I was not even aware of the term "dummy variable trap" until a few days ago, but it seems like the term is popping up more and more frequently at CV (note chonological ordering). Do we ...
55 views

120 views

### Is this question about categorical features on-topic?

The question Suggestions on using model in production 1 test at a time was closed as off-topic. To my mind, the question content is squarely about the generalizability of a specific kind of feature (...
120 views

### Is the [modeling] tag useful?

modeling is the 40th most popular tag, having been applied to 1820 questions so far. But I quickly scanned through a handful of the tagged questions and it didn't seem particularly helpful in any of ...
56 views

### Incorrect use of the reliability tag, we need a more informative tag name?

The reliability tag is meant for reliability of measurements, but today Calculating Failure Rate with Some Failure Cause Data being Vague (and certainly before) somebody used it in the meaning of "...
191 views

### Create a canonical question/answer for questions of the form 'Is my $R^2$/AUC/etc. good'?

I see a fair number of these questions from new members wanting to know how to interpret their model result. This is usually followed by a series of comments explaining that there is no general way to ...
140 views

### Should we start redirecting “why are my forecasts shifted one step ahead from the actuals” questions to a community wiki?

It seems like almost every other day now, we get a new post with somebody asking the question: "My forecasts look very good, they almost follow the actual to the letter, except that they are shifted ...
88 views

### Request to reopen too broad question about standard/best practice for dealing with discovered ancillary patterns not hypothesized

A couple of days ago I asked the question on main When conducting a study, what is standard practice with patterns you find along the way? and it was put on hold earlier this morning as 'too broad'. ...
75 views

### Is there a machine learning StackExchange?

Is there a research-level machine learning site in the StackExchange universe? I don't like Reddit's formatting system.
327 views

### Why is my question about replicating a figure from Hastie et al. not appropriate?

I asked this question earlier today but was quickly put on hold with a generic comment. I can only assume the question is on hold as it has been interpreted as being a coding question. It is clear ...
283 views

### Homework question put on hold for “demanding an answer” even though, I did show what my own thinking/approach to the problem was?

This post about a question that came up in a test was put on hold, presumably because I am "demanding an answer". But I'm not, I clearly explained what my thinking was and how it differed from the ...
71 views

I have a question about my Cross Validated post: Statistics: what kind of test to use to test this hypothesis? A member commented on my question in detail, and that comment did answer my question. I ...
235 views

### Just had 170 points removed. Excessive?

It is claimed that when a user is removed points will not be taken away when that would result in in an excessive loss of reputation. What is excessive? -170 points is more reputation than most people ...
280 views

### If someone answered my question outside CV, can I post the answer myself and accept?

I asked a question on CV and linked it to an author of a paper. They are not on CV, but gave me an answer. Is it OK to post it as an answer, as long as I say who it is from and that it isn't my own ...
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47 views

### Can (should) I delete a question that gained no attention to re-create it with a simpler formulation?

I recently made a question that gathered no attention: Bootstrap and numerical optimization of statistic. I think I've come up with a much simpler and to-the-point way of asking the same thing (...
196 views

### Irregular voting patterns

Without calling anyone out, I suspected someone of downvoting other answers than their own just to have theirs appear higher/attract more upvotes. However, I wasn't sure how to report this and more ...
253 views

### Would this dice question be on topic if it were posted or migrated here?

RPG.SE is currently having a bit of a vigorous discussion about this question about dice rolling (meta thereupon), in which this stack was brought up as a potential migrate target. There is a dice ...
217 views

### Community moderating vs systemic attacks

I see a lot of programming questions here. I remind people that programming questions are off-topic here, that they could be useful for Stack Overflow, and that the requirements are a minimal working ...
121 views

There are quite a few questions asking how to run backpropagation when dealing with skip connections, residual networks, "mixed" RNN-CNNs, attention mechanisms, etc. I suspect the reason for the ...
174 views

### Question about math notation closed as off-topic

The question "What is sigma function in the YOLO object detector?" has been closed as off-topic with the usual explanation: This question appears to be off-topic because EITHER it is not about ...
346 views

### Should we make [deep-learning] tag a synonym for [neural-networks]?

We already have a thread on tag synonyms and merging the *-learning tags, but since deep learning is currently a hot topic, it probably would be better to discuss it separately. Should we make deep-...
36 views

### How often/how quickly do community ads get posted?

I posted an ad to the Community Promotion Ads - 2019 thread, and the ad has had the requisite 6 votes for several days, but as far as I can tell it has not yet run on the Q&A site. Just wanted to ...
74 views

### Are questions concerning deployment best practices on-topic?

I have a model built with time series data that I want to deploy. Sadly, I haven't found a lot of resources for this and I wanted to ask how to best approach this. The answer I am hoping for contains ...
333 views

### Shouldn't CV be a valid resource on how to implement non-trivial statistical models in different software?

Currently the Help Center > Asking states that questions are on-topic if they're about "statistical analysis, applied or theoretical", and whenever it's about programming "if it needs statistical ...
321 views

### Why is math.SE more responsive than Cross Validated?

I am just wondering why it takes more time to get a response in Cross Validated than in math.SE. Is there any specific reason?
313 views

### This opinion-based question must be closed

The question What must someone know in statistics and machine learning? is not suitable for the stats.SE format because it is primarily opinion-based. I believe that much is obvious on its face. OP's ...
239 views

### Is there a way to solicit Cross Validated users to Commit to a proposed Operations Research and Analytics site (in Area 51)?

An "Operations Research and Analytics" site for Stack Exchange has been proposed https://area51.stackexchange.com/proposals/121892/operations-research-and-analytics, and is now in need of enough ...
152 views

### Are “stats-review” questions on-topic?

I'm dealing with a question on Stack Overflow that's really a "stats review" -- not technically a code review ("is this code OK?"), but "is this statistical approach OK?" This strikes me as ...
44 views

### Someone upvoting my old answers at a rate of 2-3 per day [duplicate]

Think I am experiencing a weird stalk-upvoting behaviour this week. Every day I see 2-3 of my old answers being upvoted. And the upvoting started from the lowest-score answers (that had 0 score) and ...
60 views

### Can we resolve the lack of consensus about editors adding the self-study tag?

I recently looked over my list of reviews for 'suggested edits'. I found a fair number of cases where the majority vote was to approve the addition of the self-study...
194 views

### How to improve the description and usage of the [machine-learning] tag?

I've noticed that a specific user has engaged in a campaign to add the tag machine-learning to a number of posts that do not mention machine learning, particularly posts about neural-networks. I don'...
208 views

### Should we remove the “datasets” close reason from the list?

Our recent proposal for adding one more close reason was declined. The reason was that we could re-use the "datasets" reason Questions about obtaining specific datasets are off-topic on Cross ...
99 views

### Question titles cannot be similar to those of a closed question

I wish to ask a question with a similar (or identical) title to a question that is closed. But I'm not able to do this. It seems to me that this is a mistake. If the previous question is closed ...
203 views

### Are “What is State of the Art for Machine Learning in X” on topic?

I often need to discern what the State of the Art (SOTA) is for certain Machine Learning Applications, which I currently ask on the Fast.ai forums. For example: How does Deep Learning deal with ...
46 views

### Who implemented and operates/maintains the user Community?

I'm talking about this fella. I know it's a bot (?), but how is it implemented, who maintains it?
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### Strange upsurge in up-voting of my questions [duplicate]

I have noticed an unexpected upsurge in the frequency by which my past questions are being upvoted. Whereas for most years of my membership I had maybe on average one or two upvotes in a week, since ...
199 views

### If OP asks for a software referral, and a referral *doesn't* exist, may we answer with the code they asked for?

If an OP asks for a R library recommendation (policy under debate in another meta thread, I realize), and no acceptable recommendation exists, what is the policy regarding writing and posting code ...