Displaying 20 results from an estimated 11000 matches similar to: "Learning to speak R: simple data processing"
2020 Mar 09
2
GSoC - Advanced Heuristics and Machine Learning
Hello again! Previously, I introduced myself as a prospective GSoC student
interested in LLVM. Per Mr. Doerfert suggestion I took a look at two other
projects that he said could interest me due to my ongoing research in
autotuning. The projects are:
Advanced Heuristics for Ordering Compiler Optimization Passes
Machine learning and compiler optimizations: using inter-procedural
analysis to select
Machine learning and compiler optimizations: using inter-procedural analysis to select optimizations
2020 Mar 24
2
Machine learning and compiler optimizations: using inter-procedural analysis to select optimizations
I am a grad CS student at Stanford and wanted to engage with EJ Park,
Giorgis Georgakoudis, Johannes Doerfert to further develop the Machine
Learning and Compiler Optimization concept.
My background is in machine learning, cluster computing, distributed
systems etc. I am a good C/C++ developer and have a strong background in
algorithms and data structure.
I am also taking an advanced compiler
2012 Jul 04
9
Sobre categorías de factores extraídos de un data.frame
Hola estimados miembros de la lista,
Tengo una inquietud.
Les cuento: tengo un conjunto de datos en un data.frame. Algunas de las
variables que están en él son del tipo factor. Estos factores,
naturalmente, tiene categorías: a veces demasiadas categorías y muchas de
ellas con 1 individuo contemplando el data.frame más de 1 millón de
individuos.
Estas pequeñas cantidades creo que me están
2012 Aug 31
9
[Bug 2040] New: Downgrade attack vulnerability when checking SSHFP records
https://bugzilla.mindrot.org/show_bug.cgi?id=2040
Priority: P5
Bug ID: 2040
Assignee: unassigned-bugs at mindrot.org
Summary: Downgrade attack vulnerability when checking SSHFP
records
Severity: minor
Classification: Unclassified
OS: All
Reporter: ondrej at caletka.cz
Hardware: All
2012 May 02
2
interactive loop
Dear R-helpers,
I have a number of point configurations representing skull shapes, but
some of them contain superfluous points. I want to write a loop in
which each configuration is plotted and I am asked to write the
numbers of points that are superfluous. However, I don't know how to
introduce this interactive element.
Would you give me an advice?
Best regards
Ond?ej Mikula
--
Ond?ej
2003 Jan 31
1
Problems with boot package (empinf returns NA)
Hi
I'm using boot package for some analysis on linear regression
coeficients. My problem is that I can not compute bca intervals, I get
an error message
> bca.ci(blm8901,index=1)
Error in if (!all(rk > 1 & rk < R)) warning("Extreme Order Statistics
used as Endpoints") :
missing value where logical needed
The problem is the empinf.reg function that is
Machine learning and compiler optimizations: using inter-procedural analysis to select optimizations
2020 Mar 27
2
Machine learning and compiler optimizations: using inter-procedural analysis to select optimizations
Hi Johannes - great we are engaging on this.
Some responses now and some later.
1. When you say setup LLVM dev environment +. clang + tools etc, do you
mean setup LLVM compiler code from the repo and build it locally? If so,
yes, this is all done from my end - that is, I have built all this on my
machine and compiled and run a couple of function passes. I have look at
some LLVM emits from clang
2004 Jul 09
3
Problem with bwplot
Try factor(vec2) in your bwplot() call.
-----Original Message-----
From: r-help-bounces at stat.math.ethz.ch
[mailto:r-help-bounces at stat.math.ethz.ch]On Behalf Of Ernesto Jardim
Sent: Friday, July 09, 2004 9:41 AM
To: Mailing List R
Subject: [R] Problem with bwplot
Hi,
I'm ploting some box-and-whisker plots with bwplot but I'm not getting
any box-and-whiskers ... just dots.
2004 Jul 29
3
Help w/ matrix calc
Dear All,
Help is needed! I have a matrix with frequencies of fish larvae per length
class (var. sl) and age-group (var. median.no) obtained with
>k<-table(cut(sl,(5:22)),median.no)
>k[2:5,1:5] #to ilustrate k
4 5 6 7
(6,7] 3 1 0 0
(7,8] 3 0 1 0
(8,9] 3 4 3 5
(9,10] 3 15 7 13
from this matrix I would like to obtain the mean age per length class i.e.
2014 Sep 26
2
summary
Grandiosa Comunidad
Saludos
Quiero pedirles ayuda en los siguientes puntos;
.- Pregunto si puedo sacar, aumentarle al summary también los siguientes
puntos
Intervalo de confianza, desviación estándar?
.- como puedo obtener la correlación en variables dicotómicas ej. tau de
kendall?
.- Como puedo cambiar los títulos del ingles al español de los encabezados
de un surfit(Surv(tiempo, estado))?
--
2012 Aug 31
6
[Bug 2039] New: Give proper credits for ECDSA patch
https://bugzilla.mindrot.org/show_bug.cgi?id=2039
Priority: P5
Bug ID: 2039
Assignee: unassigned-bugs at mindrot.org
Summary: Give proper credits for ECDSA patch
Severity: normal
Classification: Unclassified
OS: All
Reporter: ondrej at sury.org
Hardware: All
Status: NEW
Version:
2005 Dec 20
3
Overlaying lattice plots
Hillary, Richard M wrote:
> Morning chaps, I have a little question for your capable minds... Say
> I have an observed and predicted set of quants (in my case, length
> frequencies by year and age/length), is there a way to use lattice
> plots to plot the observed and predicted data together, panel by panel?
> Obrigado/gracias (thankyou in Galego is?...)
> Rich
Hi Richard,
If
2005 Dec 20
3
Overlaying lattice plots
Hillary, Richard M wrote:
> Morning chaps, I have a little question for your capable minds... Say
> I have an observed and predicted set of quants (in my case, length
> frequencies by year and age/length), is there a way to use lattice
> plots to plot the observed and predicted data together, panel by panel?
> Obrigado/gracias (thankyou in Galego is?...)
> Rich
Hi Richard,
If
2002 Jun 28
4
R for simple stats
Hi everyone,
I'm taking a course in statistics as part of my doctoral program in
education at the U. of Minnesota, USA. I found R via Rpy, a python
module that makes it possible to use R from python scripts.
The instructor refers to SPSS a lot and that seems to be the standard
stats tool around here. But being more of a Unix guy and not intimidated
by programming, I'd like to see if I
2006 Oct 19
5
binom.test
R-experts:
A quick question, please.
>From a lab exp, I got 12 positives out of 50.
To get 90% CI for this , I think binom.test might be the one to be used.
Is there a better way or function to calculate this?
> binom.test(x=12, n=50, p=12/50, conf.level = 0.90)
Exact binomial test
data: 12 and 50
number of successes = 12, number of trials = 50, p-value = 1
alternative
2004 Mar 12
5
grep
Hi,
I want to use the first digit of the elements of a vector.
I've tried grep but didn't work.
Any help is welcome.
Thanks
EJ
> grep("^[0-9]",as.character(runif(100,0,2)))
[1] 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
17 18
[19] 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34
35 36
[37] 37 38 39 40 41 42 43 44 45
2005 May 12
3
acf problem ?
Hi
I'm getting the following error that do not make sense to me, what am
Idoing wrong ?
> acf(Recsim[1,], lag.max=1)
Error in acf(Recsim[1, ], lag.max = 1) : 'lag.max' must be at least 1
Regards
EJ
2003 Apr 14
6
Charts to M$Word - what's the best format
Hi
I'm exporting some graphs from R to M$Word. I used png, jpeg and bmp and
the quality is poor when comparing with the postscript.
What is the best way to export a chart to be included in a M$Word file ?
Thanks
EJ
2006 Oct 19
1
Re : CI
Un texte encapsul? et encod? dans un jeu de caract?res inconnu a ?t? nettoy?...
Nom : non disponible
Url : https://stat.ethz.ch/pipermail/r-help/attachments/20061019/dc66a793/attachment.ksh
2005 Nov 03
1
How to calculate errors in histogram values
Hi there,
I'm new to R but I thought this is the most likely place I could get advice or
hints w.r.t the following problem:
I have a series of measurements xi with associated uncertainties dxi. I would
like to construct the probability density histogram of this data where each
density estimate has an associated error that is derived from the dxi. In
other words, for large dxi the