similar to: Learning to speak R: simple data processing

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
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
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