Displaying 6 results from an estimated 6 matches for "lbfgs".
Did you mean:
bfgs
2000 Aug 15
1
Defective pointer to tech report (PR#634)
Full_Name: Rod Montgomery
Version: 1.1.0
OS: Windows-95
Submission from: (NULL) (38.26.56.3)
File R-1.1.0/src/appl/lbfgsb.c --
Comment in code says two papers describing underlying math are in
ftp://ece.nwu.edu/pub/lbfgs/lbfgs_bcm/
but that directory seems not to exist.
(Actually, the comment does not give a URL - it just says
to look in that directory on that FTP server.)
Paper [1] does exist in
ftp://ece.nwu.e...
2019 Mar 04
2
Package inclusion in R core implementation
...shing for some time for their deprecation. They aren't "bad", but we have
better tools, and they are in CRAN packages. Similarly, I believe other optimization
tools in the core (optim::L-BFGS-B, nlm, nlminb) can and should be moved to
packages (there are already 2 versions at least of LBFGS that I and Matt Fidler
are merging). And optim::SANN does not match any usual expectations of users.
I'm sure there are other tools for other tasks that can and should move to packages
to streamline the work of our core team. However, I can understand that there is this
awkward issue of actual...
2019 Mar 04
0
Package inclusion in R core implementation
...heir deprecation. They aren't "bad", but
> we have
> better tools, and they are in CRAN packages. Similarly, I believe other
> optimization
> tools in the core (optim::L-BFGS-B, nlm, nlminb) can and should be moved to
> packages (there are already 2 versions at least of LBFGS that I and Matt
> Fidler
> are merging). And optim::SANN does not match any usual expectations of
> users.
>
> I'm sure there are other tools for other tasks that can and should move to
> packages
> to streamline the work of our core team. However, I can understand that
>...
2019 Mar 04
1
Package inclusion in R core implementation
...ir deprecation. They aren't "bad", but we have
> better tools, and they are in CRAN packages. Similarly, I believe other optimization
> tools in the core (optim::L-BFGS-B, nlm, nlminb) can and should be moved to
> packages (there are already 2 versions at least of LBFGS that I and Matt Fidler
> are merging). And optim::SANN does not match any usual expectations of users.
>
> I'm sure there are other tools for other tasks that can and should move to packages
> to streamline the work of our core team. However, I can understand that there...
2019 Feb 28
3
Package inclusion in R core implementation
Hi,
It sometimes happens that some packages get included to R like for example
the parallel package.
I was wondering if there is a process to decide whether or not to include a
package in the core implementation of R?
For example, why not include the Rcpp package, which became for a lot of
user the main tool to extend R?
What is our view on the (not so well known) dotCall64 package which is an
2016 Oct 08
4
optim(…, method=‘L-BFGS-B’) stops with an error message while violating the lower bound
Hi, Mark et al.:
Thanks, Mark.
Three comments:
1. Rvmmin was one of the methods I tried after Ravi
directed me to optimx. It returned NAs for essentially everything. See
my email of this subject stamped 4:43 PM Central time = 21:43 UTC.
2. It would be interesting to know if the current
algorithm behind optim and optimx with