Are you happy if this site encounters now or in the future discrimination in one form or another? Perhaps this case here or some else? Why did the FAQ changed some time ago? Due to skepticism of scientific nature of this site? Before you can proceed as "XYZ Science", I would like to know the answ...
I would like to see the edit history what is going on, this kind of activity creates impolite and kafkaesque feeling. Hopefully, people doing this could stand up and provide explanation. Thank you.
I messed up with FAQ/About sections, cleared up the writing. They are strikingly different, why is the other mentioning Science explicitly and the other not? I think this point should be cleared up, is this site for scientific things about computing? More in the updated thing. Sorry about the mess.
I find it would be good idea to create certain basic questions that would be used as a reason for "duplicate" in the future. I don't like the current way of doing things by allowing googling answers. This kind of answers should be discouraged in a way that the questions could be closed and directed to the general basic questions.
@hhh: I posted a screen shot of the last three edits.
@hhh: We do allow basic questions. You've asked six questions about computer algebra software. Of those questions, 1 got migrated to Mathematica, 2 had a score of -3 or less and were deleted, the current one up for debate has a score of -1, and two have been upvoted.
@GeoffOxberry Yes thank you, that is clear now. I messed up with About and FAQ sections -- and apologized about that. I was too temperament perhaps due to this one issue above.
So it's not as if you haven't gotten a chance to ask about basic questions. You have. They're just all very similar, and a good fraction of them have been low quality or off-topic.
I find it would be good idea to create certain basic questions that would be used as a reason for "duplicate" in the future. I don't like the current way of doing things by allowing googling answers. This kind of answers should be discouraged in a way that the questions could be closed and directed to the general basic questions.
1. I can tell you right now that all of the answers you got for your computer algebra software questions were from Google. My accepted answer on your power series approximation question was found by Googling.
2. How do we then decide what basic questions are worth keeping and what aren't? Seeding the site with a large number of basic questions opens us up to a huge host of logistical issues that really aren't worth addressing when a far simpler approach is to keep doing what we've already been doing: requesting that people ask questions when they encounter a problem personally.
@GeoffOxberry That is excellent point. I think one should use some sort of categorization by general topic -- for example mathematical issues are easy to categorize but it does require some knowledge. Perhaps some hgiher level categorization such as a broad question about differentials, integration, certain type of mapping etc -- then when you get a question to that category, you redirect/close the question to that basic-general question. I think it is much better than Matlab/sage/google/etc...
I feel it would be much receptive for the user, closing is much better than insulting baseless downvoting.
@hhh: And again, it boils down to replacing the system we have, which seems to work well (as far as I know, you're the only user who's been upset about what we're doing), with one that would require a large amount of work in terms of deciding the categories, vetting the questions, and so on.
And on a long enough time scale, what you're talking about would happen anyway.
...and it would does good for community to cover different ways of solving things computationally in that kind of general answers. Look it is a Herculean task for one person to provide solutions with all kind of languages etc
@GeoffOxberry now you are misunderstanding, it requires no change.
Look differential questions during the writing time could get a logo "[will be closed -- or look this question]" to make users less probably to make such question or think again. It would be much better choice and to start this debate after making the question.
I always calculate things by hand, but now my comrades are getting nasty and making a lot of repetitive exercises involving just plugging things in like the expression above. I am particularly interested in open-source software such as Python or R to simplify these kinds of equations. I tried usi...
@GeoffOxberry Yes it was good and besides packages I liked that we tried to provide the source codes so people could play and test things on different languages without reading too much manual.
And it's a good question. We needed a question that talked about how to deal with pencil and paper problems, because symbolic manipulation can be important in deriving formulas that are part of algorithms in computational science.
But then people took a look and saw your slightly earlier question:
My comrades repeatedly encourages monotonous problems where the issue is the same: chain-rule and some basic arithmetic. Is there some computational way to derive power series approximations? Suppose I plug in some function such as $e^{x^{2}+x+ln(x)+x^{777}}$, $e^{x^2}$ or $x^{777}-ln(x)+e^{2x+1}...
And they realized that you had asked a similar question the very next day. In fact, Mark Booth mentions it in his comment.
So by the time you get to differential equations, people have caught on. Plus, it looks awfully similar to a question you asked about symbolic manipulation of differential equations on February 14.
Yes that is bad if it is repetition but my point was to create more like "introduction or welcome -questions about specific problems". Do you think I cannot solve them myself if I tried? Actually, I was going to provide my solutions to differential q but I thought it would be polite to let people time to answer.
It's fine to answer your own question, but I think your question would have been downvoted anyway because it's too derivative. It's much like your other questions about symbolic manipulation.
The book here (sorry not in English) on page 676:
$$\begin{cases}y'=-y^{2} \\
y(0)=1\end{cases}$$
when $x_{k}=\frac{k}{5}$ which means $h=0.2$ i.e. $\Delta x=x_{k+1}-x_{k}=0.2:=h$. The task is to calculate 5 steps with the logic on pages 670-671:
$$\begin{align*}
y_{k+1}&=y_{k}+hf(x_...
Yes but it was not my goal, my goal was to move the computational things from Math SE here
It would be very useful if we could concentrate on Math SE less on techincal things and then just direct to some thread in SciComp -- look this question in SciComp how vizualise etc
I think that's a good point, and I think if you can find a constructive way to bring computational topics from Math.SE here, then you will have made an outstanding contribution to SciComp.
I encourage you to come up with different ways of doing that. Variety would be a good start. Ask about technical problems that you face in computational science that aren't just symbolic manipulation.
...I do not have problems that is the problem. I create questions here to move the computational things from Math SE to this site. I think this site was for it?!
(I created a mock question that I have a homework, actually I did and returned it much earlier -- can be seen in Math SE if really needed)
I was going to create the differential thread for that.
...to gather up different ways of doing that kind of problems...
Surely you have problems that are in computational science. Numerical solution of ordinary differential equations, perhaps? You talked about the Euler method, for instance, but you could ask a different question on numerical integration, perhaps exploring a different issue than just asking if you reproduced the formula correctly.
You've also asked questions about optimization on Math.SE; that's another potential topic for questions on SciComp.
Even then, I'd encourage you to ask questions that are nontrivial and interesting to people, since we need high quality questions on the site. It's something that you've mentioned a lot in your posts, and one metric for quality (though imperfect) is the question score (in votes).
@GeoffOxberry That is hard metric. The other metric is short-term euphoria, the other metric is long term -- anyway I wrote down the suggestions. It will be quite a research effort really to make them into some sort of questions, I start to think too robotically perhaps -- problem, solve (dot) -- simple.
...I find it hard to make a like which is Homework and which is not. I like to make as simple questions as possible. I do it all the time.
In Lambda calculus, Y -combinator returns itself like this Y a = a Y a, specifially here. Suppose some trivial function such as y(x)=2*x+1 (suppose Church numbers for the sake of simplicity) and I want to do it Y y to which I want some sort of break-out -function. I want to do something like this...
Is there a straightforward way to formulate the following as a linear program, or something similarly amenable to easy solution? The problem is:
minimize $A \;\mathrm{vec}(U)$ over symmetric $n\times n$
matrices $U$ subject to $U_{i,j} \leq \max\{U_{i,k}, U_{k,j}\}$
for all $i,j,k$.
H...
Is there a straightforward way to formulate the following as a linear program, or something similarly amenable to easy solution? The problem is:
minimize $A \;\mathrm{vec}(U)$ over symmetric $n\times n$
matrices $U$ subject to $U_{i,j} \leq \max\{U_{i,k}, U_{k,j}\}$
for all $i,j,k$.
H...
Computational Science
Computational Science