search for: forumlas

Hi, Quick question. I'm working on training an SVM. I have a dataframe with about 50 columns. I want to train on 46 of them. Is there a way to say "All except columns 22,23,25 and 31"? It would be nice to not have to do +c1 +c2 +c3 +c4, etc for all 48 columns. Thanks! -N [[alternative HTML version deleted]]

I am trying to mimic the SAS code below in R. The trick is that each row in the dataset has variable "t" which controls how many times the do-loop below will be iterated (that is, the model is fit to the response, ifate, 0 to t-1 times for each row of data). Is it possible to incorporate a loop like this into nlme by writing a function? Can anybody provide some hints to get me on my

Dear list, I have a problem on calculating the standard error of Goodman-Kurskal's gamma using delta method. I exactly follow the method and forumla described in Problem 3.27 of Alan Agresti's Categorical Data Analysis (2nd edition). The data I used is also from the job satisfaction vs. income example from that book. job <- matrix(c(1, 3, 10, 6, 2, 3, 10, 7, 1, 6, 14, 12, 0, 1, 9,

Hi, I have a dataset which has a categorical variable "R",a count variable C (integer) and 4 or more numeric variables (A,T,W,H - integers) containing measures for "R". I would like to summarize each level of the variable R by the average for A,T,W and H. I have written a function to calculate weighted averages using C as the weight and this is given below. The function

I have seen, several times, dots (like this: "y ~." ) in formula descriptions, noticeably in R help. I am unable to see what it does correspond to. Any ideas ? -- --~~ Toulouse, Grenoble, Auch, Arcachon, B??ziers, Paris, Saragosse, L??vignac Sur Save, habitats naturel du Valdo. ~~-- < http://www.le-valdo.com>

Hi all, I am in the process of setting up a test network to test samba as a DC with the acct information stored in LDAP (2.2.3a). The ultimate goal is to replace the nt4 (P,B)DC we have on the network now with a samba DC. I have read about the uid gid scheme of uid *2+1000 = rid but I am a little confused. If I use pwdump to dump the existing sam database I get numbers like 1036 for the

Hi all, I just watched the rail video: http://www.rubyonrails.org/media/video/rails_take2_with_sound.mov I am just curious. I can tell that the video was done on a Mac, but I cannot tell which applications were used for editing the code, and for interfacing with MySQL database. As far as editing source code, I normally use BBEdit (I''ve used it since 1994), but the editor used in

Hey guys,hi.:) I've finished implementing the PL2 scheme . The bounds I have implemented for it are as good as I could, given the nature of the scheme and my mathematical skills.However,tight bounds for other named DFR schemes will be easier to implement because their forumlas are quite simpler compared to PL2 . Will send in a pull request in a couple of days once I'm done with the tests and the documentation. I'll now start working on the DPH scheme as described in Section 3 here:- http://trec.nist.gov/pubs/trec18/papers/uglasgow.BLOG.ENT.MQ.RF.WEB.pdf Now th...

Good Day Has anybody here looked closely at the call cost calculation in ASTCC? Can you duplicate the way the cost of a call is calculated? I believe that there is an error in the code. I have fixed it, I think and submitted a patch but we need user comments. I would appreciate if anybody involved would slip over to chech out this link on the bugtracker and provide feedback.

Hello! I cant get the bwlimit option working right. If i set this option over 400 kbyte per sec i still only get 400kbyte per sec, whether wich value i set. I try this option with a 100MB big file. I use a debian stable System with rsync version 2.5.6cvs protocol version 26. Can someone tell me how i can this get working? thx Rene dpkg -l "rsync*" ii rsync 2.5.5-0.1 fast remote

Hi I'm having a problem with model.frame, encapsulated in this example: y1 <- matrix(c(3,1,0,1,0,1,1,0,0,0,1,0,0,0,1,1,0,1,1,1), nrow = 5, byrow = TRUE) y1 <- as.data.frame(y1) rownames(y1) <- paste("site", 1:5, sep = "") colnames(y1) <- paste("spp", 1:4, sep = "") y1 model.frame(~ y1) Error in model.frame(formula, rownames,

On Fri, 11 Nov 2016 11:21:17 -0800 L A Walsh <samba at tlinx.org> wrote: > Rowland Penny via samba wrote: > > If you are talking about 'system' accounts (postfix, dovecot, > > apache, etc) then these do belong in /etc/passwd and /etc/group. As > > far as I am aware, windows doesn't use Unix IDs, it uses SID-RIDs > > > ---- > System

I want to write a function that get 2 strings y and z and does the following R command. temp<-qq1[qq1$z==y,] for example if it get y="AMI" and z="PrimaryConditionGroup" It should do the following temp<-qq1[qq1$PrimaryConditionGroup=="AMI",] I could do it by the following function that is ugly and I wonder if there is an easier way to do it espacielly when temp

Rowland Penny via samba wrote: > On Wed, 09 Nov 2016 15:20:41 -0800 > Linda W <samba at tlinx.org> wrote: > >>> >>> >>>> I have been waiting for the 4.x server to become a full server >>>> before upgrading from 3.6.22, but it is getting a bit long in the >>>> tooth. The requirement that in upgrading to 4.x

A client of mine has a ton of data stored in Excel spreadsheets. I''m building a web application for her (backed by a real db of course) and want to import all that data. Is there a library available to read data from Excel? Is there an easy way to upload the spreadsheets and then read the data? Thanks, Ken Kousen -- Kenneth A. Kousen, Ph.D. President Kousen IT, Inc.