Displaying 6 results from an estimated 6 matches for "dot_product".
2020 Mar 26
2
unstable corner of parameter space for qbeta?
...cus on that to start with.
Martin: On a separate precision matter, did you get my query early in year about double
length accumulation of inner products of vectors in Rmpfr? R-help more or
less implied that Rmpfr does NOT use extra length. I've been using David
Smith's FM Fortran where the DOT_PRODUCT does use double length, but it
would be nice to have that in R. My attempts to find "easy" workarounds have
not been successful, but I'll admit that other things took precedence.
Best,
John Nash
On 2020-03-26 4:02 a.m., Martin Maechler wrote:
>>>>>> Ben Bolker...
2020 Mar 26
2
unstable corner of parameter space for qbeta?
...eparate precision matter, did you get my query early in year about double
> > length accumulation of inner products of vectors in Rmpfr? R-help more or
> > less implied that Rmpfr does NOT use extra length. I've been using David
> > Smith's FM Fortran where the DOT_PRODUCT does use double length, but it
> > would be nice to have that in R. My attempts to find "easy" workarounds have
> > not been successful, but I'll admit that other things took precedence.
>
> Well, the current development version of 'Rmpfr' on R-forge...
2006 May 26
8
Comparing two documents in the index
I want to compare two documents in the index (i.e. retrieve the cosine
similarity/score between two documents term-vector''s). Is this possible
using the standard Ferret functionality?
Thanks in advance,
Jeroen Bulters
--
Posted via http://www.ruby-forum.com/.
2020 Mar 26
0
unstable corner of parameter space for qbeta?
...Martin: On a separate precision matter, did you get my query early in year about double
> length accumulation of inner products of vectors in Rmpfr? R-help more or
> less implied that Rmpfr does NOT use extra length. I've been using David
> Smith's FM Fortran where the DOT_PRODUCT does use double length, but it
> would be nice to have that in R. My attempts to find "easy" workarounds have
> not been successful, but I'll admit that other things took precedence.
Well, the current development version of 'Rmpfr' on R-forge now
contains facili...
2020 Mar 26
0
unstable corner of parameter space for qbeta?
...eparate precision matter, did you get my query early in year about double
> > length accumulation of inner products of vectors in Rmpfr? R-help more or
> > less implied that Rmpfr does NOT use extra length. I've been using David
> > Smith's FM Fortran where the DOT_PRODUCT does use double length, but it
> > would be nice to have that in R. My attempts to find "easy" workarounds have
> > not been successful, but I'll admit that other things took precedence.
>
> Well, the current development version of 'Rmpfr' on R-forge...
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