Displaying 5 results from an estimated 5 matches for "housebound".
2020 Mar 26
2
unstable corner of parameter space for qbeta?
Given that a number of us are housebound, it might be a good time to try to
improve the approximation. It's not an area where I have much expertise, but in
looking at the qbeta.c code I see a lot of root-finding, where I do have some
background. However, I'm very reluctant to work alone on this, and will ask
interested others to e...
2020 Mar 26
2
unstable corner of parameter space for qbeta?
...forth keep matters moving forward. Volunteers?
Thanks to Martin for detailed comments.
JN
On 2020-03-26 10:34 a.m., Martin Maechler wrote:
>>>>>> J C Nash
>>>>>> on Thu, 26 Mar 2020 09:29:53 -0400 writes:
>
> > Given that a number of us are housebound, it might be a good time to try to
> > improve the approximation. It's not an area where I have much expertise, but in
> > looking at the qbeta.c code I see a lot of root-finding, where I do have some
> > background. However, I'm very reluctant to work alone on...
2020 Mar 26
0
unstable corner of parameter space for qbeta?
>>>>> J C Nash
>>>>> on Thu, 26 Mar 2020 09:29:53 -0400 writes:
> Given that a number of us are housebound, it might be a good time to try to
> improve the approximation. It's not an area where I have much expertise, but in
> looking at the qbeta.c code I see a lot of root-finding, where I do have some
> background. However, I'm very reluctant to work alone on this, and will...
2020 Mar 26
0
unstable corner of parameter space for qbeta?
...d forth keep matters moving forward. Volunteers?
Thanks to Martin for detailed comments.
JN
On 2020-03-26 10:34 a.m., Martin Maechler wrote:
>>>>>> J C Nash
>>>>>> on Thu, 26 Mar 2020 09:29:53 -0400 writes:
>
> > Given that a number of us are housebound, it might be a good time to try to
> > improve the approximation. It's not an area where I have much expertise, but in
> > looking at the qbeta.c code I see a lot of root-finding, where I do have some
> > background. However, I'm very reluctant to work alone on...
2020 Mar 26
4
unstable corner of parameter space for qbeta?
I've discovered an infelicity (I guess) in qbeta(): it's not a bug,
since there's a clear warning about lack of convergence of the numerical
algorithm ("full precision may not have been achieved"). I can work
around this, but I'm curious why it happens and whether there's a better
workaround -- it doesn't seem to be in a particularly extreme corner of
parameter