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seen Jul 15 at 16:37

Aug
10
awarded  Commentator
Aug
10
comment How to do a regression with only integer values and a fixed intercept?
Hah. Yes, I suppose it would have to. I mentally added the $+b$ part. Great, thanks for your help.
Aug
10
comment How to do a regression with only integer values and a fixed intercept?
Thanks! Two questions: 1) How would I go about this for a polynomial of degree $n>1$. 2) If my fixed point is $(0,0)$, then it seems like I wouldn't do any adjustments, but this doesn't make sense to me. If I gave you a set of points perfectly describing the curve $y=x+1$ but I wanted the regression to pass through $(0,0)$, not adjusting the regression clearly does not work.
Aug
10
accepted How to do a regression with only integer values and a fixed intercept?
Aug
9
comment How to do a regression with only integer values and a fixed intercept?
Won't this just make a "best-effort" attempt at making it pass through (0,0)? I'm okay if the residuals for the other provided data points are non-zero, but f(0) must equal 0.
Aug
9
asked How to do a regression with only integer values and a fixed intercept?
Apr
3
accepted Narrowing a Stern-Brocot tree
Apr
3
comment Narrowing a Stern-Brocot tree
And to get a wider range, piecewise sub-trees. Easy enough.
Apr
3
comment Narrowing a Stern-Brocot tree
Normally, it won't enumerate any rational equivalent to one already enumerated. Still, though, that was just an example. In general, how do you do it?
Apr
3
asked Narrowing a Stern-Brocot tree
Mar
30
awarded  Supporter
Mar
30
comment Determine if $(p/q)^{a/b}$ is rational
It's too bad, really. I was working on a complicated numerical problem, and I was hoping to keep the result rational, even after rational exponentiation.
Mar
30
awarded  Student
Mar
30
awarded  Scholar
Mar
30
comment Determine if $(p/q)^{a/b}$ is rational
@chris, I'm probably capable of developing an implementation from a proof. I'm just not as knowledgeable in the theory.
Mar
30
accepted Determine if $(p/q)^{a/b}$ is rational
Mar
30
comment Determine if $(p/q)^{a/b}$ is rational
My apologies! I don't really need something efficient, per se, just something that won't take twenty times the lifetime of the sun for a 4000-bit number :)
Mar
30
comment Determine if $(p/q)^{a/b}$ is rational
But there's really no way to efficiently figure out the prime factorization of a number...
Mar
30
comment Determine if $(p/q)^{a/b}$ is rational
I'm not sure what you mean by putting them in parentheses like that.
Mar
30
asked Determine if $(p/q)^{a/b}$ is rational