Displaying 20 results from an estimated 8000 matches similar to: "R extensions programmer help needed (London area programmer preferrably)"
2010 Jan 20
1
Unclear documentation on 'numeric' and 'integer' (R-lang.pdf)
R-lang.pdf has the following description in Section 3.1.1.
"""
Any number typed directly at the prompt is a constant and is evaluated.
> 1
[1] 1
Perhaps unexpectedly, the number returned from the expression 1 is a
numeric. In most
cases, the difference between an integer and a numeric value will be
unimportant as R will
do the right thing when using the numbers.
2006 Aug 11
3
London: Ruby on Rails programmer needed
Hi,
I am not sure if this is off topic, apologies if it is.
I am working for a startup in London and am looking for one or two rails
programmers. I estimate that there will be about 6 weeks worth of work
plus some ongoing consultancy.
If any one is interested please get in touch.
rgds,
- matt.
--
Posted via http://www.ruby-forum.com/.
2006 Apr 20
0
Suggestion Request: Coloc Provider in Chicago, IL area
Hello all!
I always prefer to get referrals from fellow professionals, and this is such a
request. I'm looking for the following:
1. Colocation providers in the chicago area to store a small server for the
purpose of setting up a VOIP service (including pstn connection via Digium
cards) for between 100-10,000 users. Obviously value is a big part, but
reliability and network speed are also
2005 Apr 22
0
Intership: R programmer, London
State Street Global Advisors (one of the world's leading
assets management companies)'s alternative strategies group
is looking for interns able to bring a significant
contribution to our R&D projects.
Here are some of the directions we are currently investigating:
- Digital Signal Processing (Kalman filter, wavelets,
Hilbert transform, etc.)
- New temporal database indexing methods
2009 May 18
1
JOB: C++ Programmer in London, England, UK
Hello ~
I'm recruiting for a hedge fund (type) business (based in London,
England, UK) that are looking for good C++ programmers with preferably
some experience in statistical modeling/programming/analysis. Perhaps
you are a statistician, mathematician or physicist (for example) by
background but a programmer by experience (or a graduate).
You should ideally also have scripting experience
2007 Jul 31
0
R Programmer - finance - London based
Hi,
UBS Investment Bank are looking for a skilled R programmer,
seeking a career that combines computer science, applied statistics and
finance.
This position requires a person with a strong background in
- R programming and R package maintenance.
- Software development.
- Design and implementation of efficient algorithms.
especially for handling large datasets.
- Data visualisation and
2019 Dec 18
0
[RFC 00/13] virtio-iommu on non-devicetree platforms
On Tue, Dec 03, 2019 at 07:01:36PM -0800, Jacob Pan (Jun) wrote:
> Hi Jean,
>
> Sorry for the delay, I was out last week. Comments inline below.
>
> On Mon, 25 Nov 2019 19:02:47 +0100
> Jean-Philippe Brucker <jean-philippe at linaro.org> wrote:
>
> > On Fri, Nov 22, 2019 at 04:01:02PM -0800, Jacob Pan (Jun) wrote:
> > > > (1) ACPI has one table per
2010 Nov 22
0
[ANNOUNCE] xf86-input-evdev 2.5.99.901
First RC for evdev 2.6. We've only had a few changes since 2.5 but there is
a significant rewrite coming up to use the masked valuator bits so I'd like
to get out what we have now.
Note that in all likelyhood, support for older servers (including server
1.9) will be dropped in the next version. Hence the 2.6 branch will be
maintained for a while.
This release has some improved tablet
2008 Oct 28
0
Random Forest Bug
Dear help list,
I think I found a bug a the R Random Forest. Hopefully, you are able to
reproduce it.
I use R version 2.7.2 and RF version 4.5-27.
This is a minimal code to describe the problem:
library(randomForest)
tries <- 20
dimension <- 20
n <- 200
outlyingness <- rep(NaN,tries)
for (o_number in 1:tries){
features <- matrix(rnorm(n*dimension,0,1),n,dimension)
#Generate
2010 May 20
1
finding euclidean proximate points in two datasets
Hello all,
I've been pouring through the various spatial packages, but haven't come
across the right thing yet.
Given a set of points in 2-d space X, i'm trying to find the subset of
points in Y proximate to each point in X. Furthermore, the proximity
threshold of each point in X differs (X$threshold). I've constructed
this myself already, but it's horrificly slow with a
2007 Jul 09
0
New package "proxy" for distances and similiarities
Dear useRs,
a new package for computing distance and similarity matrices made it to
CRAN, and will propagate to the mirrors soon.
It includes an enhanced version of "dist()" with support for more than
40 popular similarity and distance measures, both for auto- and
cross-distances. Some important ones are implemented in C.
The proximity measures are stored in a registry which can
2007 Jul 09
0
New package "proxy" for distances and similiarities
Dear useRs,
a new package for computing distance and similarity matrices made it to
CRAN, and will propagate to the mirrors soon.
It includes an enhanced version of "dist()" with support for more than
40 popular similarity and distance measures, both for auto- and
cross-distances. Some important ones are implemented in C.
The proximity measures are stored in a registry which can
2010 Oct 21
1
RandomForest Proximity Matrix
Greetings R Users!
I am posting to inquire about the proximity matrix in the randomForest
R-package. I am having difficulty pushing very large data through the
algorithm and it appears to hang on the building of the prox matrix. I have
read on Dr. Breiman's website that in the original code a choice can be made
between using an N x N matrix OR to increase the ability to compute large
2010 Jun 04
1
PFIFO_DMA_PUSHER + Xen + NV30 + questions.
Hello,
I am kernel engineer working on PV-OPS kernel trying to get it work in Dom0
with an NVidia (NV30 right now) card.
But there are issues, such as that the
pv-ops kernel has a different understanding of memory (for details check
out: http://wiki.xensource.com/xenwiki/XenPVOPSDRM).
I've fleshed out most of them (like GART had the wrong phys addresses,
ouch!), but the one that I am
2012 Oct 22
1
random forest
Hi all,
Can some one tell me the difference between the following two formulas?
1. epiG.rf <-randomForest(gamma~.,data=data, na.action = na.fail,ntree =
300,xtest = NULL, ytest = NULL,replace = T, proximity =F)
2.epiG.rf <-randomForest(gamma~.,data=data, na.action = na.fail,ntree =
300,xtest = NULL, ytest = NULL,replace = T, proximity =F)
[[alternative HTML version deleted]]
2011 Apr 01
0
Applying the Google Summer code
Hi all:
Glad to meet you!!
My name's Zhang Fan, a Phd Student from Nankai University, China. I have
been doing the information retrieval research work for 3 years. I have
several papers published in the top-tier computer science conferences such
as WSDM, VLDB, CIKM and ACL. I have many years of coding experiments
and participated several projects about search engines.
I want to take part in
2017 May 05
0
[ANNOUNCE] xf86-input-libinput 0.25.1
Just one patch that's been sitting on master for a while now - after a
proximity event we immediately post a motion event. This avoids the lines
between the last known point before proximity out and the new point.
Peter Hutterer (2):
Post a motion event after proximity events
xf86-input-libinput 0.25.1
git tag: xf86-input-libinput-0.25.1
2018 May 29
0
[ANNOUNCE] xf86-input-evdev 2.10.6
evdev 2.10.6 is now available. Since evdev is in maintenance mode there
aren't a lot of features to go around but still a few important fixes.
Andrey fixed the proximity event generation for tablets and the handling of
devices without axes but buttons - previously those were assumed to be
keyboards in the server. Better error reporting from Christian and the rest
are build system fixes that
2008 Dec 26
2
about randomForest
hello,
I want to use randomForest to classify a matrix which is 331030?42,the last column is class signal.I use ?
Memebers.rf<-randomForest(class~.,data=Memebers,proximity=TRUE,mtry=6,ntree=200) which told me" the error is matrix(0,n,n) set too elements"
then I use:
Memebers.rf<-randomForest(class~.,data=Memebers,importance=TRUE,proximity=TRUE) which told me"the error is
2012 Mar 23
1
Memory limits for MDSplot in randomForest package
Hello,
I am struggling to produce an MDS plot using the randomForest package
with a moderately large data set. My data set has one categorical
response variables, 7 predictor variables and just under 19000
observations. That means my proximity matrix is approximately 133000
by 133000 which is quite large. To train a random forest on this large
a dataset I have to use my institutions high