similar to: Algorithms for coincidences

Recent news articles concerning an article from The Lancet with fabricated data indicate that in the sample containing some 900 or so patients, more than 200 had the same birthday. I was curious and tried out the p and q birthday functions but pbirthday could not handle 250 coincidences with n = 1000. The calculation of upper prior to using uniroot produces NaN, upper<-min(n^k/(c^(k-1)),1)

Hi, I tried to calculate the formula for the birthday problem (the probability that at least two people out of a group of n people share the same birthday) But the factorial-function allows me only to calculate factorials up to 170. So is there a way to push that limit? to solve this formula: (factorial(365) / factorial((365-23))) / (365^23) (n=23)

Hi R-Devel, The Sage project (http://www.sagemath.org) has been working extremely hard for several years to create a viable free open source alternative to Maple, Matlab, Mathematica, and Magma. Numerous users have requested statistical functionality. Though Sage includes scipy and numpy, which have some statistical functionality, we've decided the best longterm solution is to strongly

My name is Michela Marignani and I'm an ecologist trying to solve a problem linked to knight' s tour algorithm. I need a program to create random matrices with presence/absence (i.e. 1,0 values), with defined colums and rows sums, to create null models for statistical comparison of species distribution phenomena. I've seen on the web many solutions of the problem, but none provides

I get ties in output from runif() when I generate as few as 10^5 variates and get quite a lot when I generate 10^6. Is this expected?? I haven't seen any duplication with rnorm(10^6), but see varying amounts of duplication using rexp(), rbeta() and rgamma(). I would have thought that there'd be enough precision that one wouldn't get ties until generating samples larger than this..

Hi all, I have this information on a file ht.txt, imagine it is a data frame without labels: 1 1 1 8 1 1 6 4 1 3 1 3 3 And on other table called "pru.txt" I have sequences similar this 4 1 1 8 1 1 6 4 1 3 1 3 3 1 6 1 8 1 1 6 4 1 3 1 3 3 1 1 1 8 1 1 6 4 1 3 1 3 3 6 6 6 8 1 1 6 4 1 3 1 3 3 I want to now how many positions are identical between each row in pru compared with ht. n and m

Buenas tardes, Quiero aplicar la función rbind y necesito tener los mismos nombres de columnas. Como tengo unas 195 variables en cada dataframe, necesito hacerlo de una forma rápida. Tengo 9 bases de datos y tengo que fusionar todas. ¿Como puedo comprobar que los nombres de las variables son los mismos? Y de lo contrario, ¿como detecto las diferencias? He probado con

I referred in my reply to a paper by Diaconis and Sturmfels. The exact reference is: Diaconis and Sturmfels, Algebraic algorithms for sampling from conditional distributions, Ann. Stat 26 (1998) 363-397. They cite the following: Besag and Clifford, Generalized Monte Carlo significance tests, Biometrika 76 (1989) 633-42. which actually contains your problem (section 3, Testing the Rasch model)

Dear List: I am encountering an error that I can't resolve. I'm looping through rows of a dataframe to generate individual tex files using Sweave. At random points along the way, I encounter the following error Error in file() : cannot find unused tempfile name At which point Sweave halts. There isn't a logical pattern that I can identify in terms of why the program stops at

:D Hi, I installed wine on ubuntu 10.10 to run a windows program as reported here (http://appdb.winehq.org/objectManager.php?sClass=version&iId=22133&iTestingId=59338). After few trails I decided to reinstall Wine (now version 1.3.8 ), to configure it as instructed by the guide, and than to install again the windows application, Birthday Reminder. At present the application doesn't

Can anyone comment or point me to a discussion of the pros and cons of robust regressions, vs. a more "manual" approach to trimming outliers and/or "normalizing" data used in regression analysis?

:) Hi experts, hi dimesio Few days ago Wine/Birthday Reminders stopped to run. I suppose that it is a consequence of an automatic updating of Ubuntu and I ask an advice on the best way to solve the issue. Consider that: if I run the application clicking on it, as usual, I see the system working and stopping after tens of seconds, If I run the application by console, this is the code that I get

No, you're quite right, I was wrong. I must have been very confused when I put up the first 'bug' report, #886. I noticed my error a couple of days after and put up a comment to that effect on R-bugs, but it seems to have vanished (or alternatively I did that wrong as well). I agree with you on the criterion for the choice of districts as well. There remains a minuscule discrepancy

I have a user table, and it has forty columns, including name, gender, address, email, phone... So my @user object will have forty attributes. I divide these attributes into 4 groups... namely ''general info'', ''personal info'', ''contact info''... and I make separate forms to edit these 4 different group attributes. The problem is when I update

CentOS is 15 years old today! Hear the story from some of our community members at https://blog.centos.org/2019/04/centos15-2/ Do you have your own story? Drop me a note - rbowen at centosproject.org - to tell me about it. -- Rich Bowen - rbowen at redhat.com @CentOSProject // @rbowen 859 351 9166

Hello All, I'm getting this error (Version: 1.9.0-1 on a debian system) > update.packages("mgcv") trying URL `ftp://mirror.aarnet.edu.au/pub/cran/src/contrib/PACKAGES' ftp data connection made, file length 169516 bytes opened URL .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... ..........

Hello all, Yesterday I moved using the mv command in Redhat 7.2 ext3 file system to move to /tmp my /mnt/win98/"My Pictures" directory to tmp. The command executed normally, and I actually verified that the subdir was created in /tmp and the files were there in /tmp/"My Pictures" I was doing this to temporarily free space on my vfat windows 98 partition. When I went

Hi guys, I''m having problems with my app. First of all, I created a date_select with the code: <%= date_select(''contact'', ''birthday'', :order => [''day'',''month'',''year'']) %> In the contacts table, I create a date field: birthday DATE When I save the values goes wrong into the database.

It was one year ago today that I released a patch to get OpenSSH compiling on Linux. I had no idea just how much trouble releasing that patch would get me into :) Within days I was inundated with patches, improvements and portability enhancements - contributions which have made portable OpenSSH the success it is today. So allow me to thank the current developers and all of you who have

hello guys, it''s possible pass two params in a GET request to the same location in the database? example: two fields in view: text_field: persons,: Birthday: id => one text_field: persons,: Birthday: id => two in the controller using params [: one] and params [: two] ? thank''s. -- You received this message because you are subscribed to the Google Groups "Ruby on