search for: theil

Dear list, I am trying to do a benchmark study for my case study. It is a regression problem. Among other models I use randomForest. Using the following code the result is around 0.628, and this make sense comparing with other methods. The Theil function implements Theil's U statistic. I do not present the definition of some variables because it is not important to understand my problem. I use sliding window trategy. library("randomForest") rf.theil <- vector() learner='randomForest' for (i in 1:6) { eval...

I came across the package 'ineq' that computes a variety of inequality measures (e.g. gini, theil etc). I want to compute the Theil index (racial segregation) and decompose the total into sub-components (by geog levels). I think the package doesn't report the decomposition (correct me if I'm wrong). Just wonder is that available elsewhere? K.

Hello, I have a series of questions that I hope will be simple to answer. Basically I would like a code to do the following so that I can compute the distribution free test for the slope of a postulated regression line (Theil test). As I am testing the null hypothesis that slope = 0 against the general alternative the slope does not equal 0, it should be pretty straight-forward. I have a data frame as follows; index Score Mean_Temp SD_Mean_Temp i 10 3.7 0.65 i+1 12 7.5 2.11 i+2 6 10.3 0.85 ... ... ... ... n 8 12...

I found some code to compute a Kendall-Theil slope estimate and want to add it to a scatter plot. Is there a way to make it appear like a regression fit instead of a line that extends from the edges of the plot? I would like to have the OLS appear as a dotted line and the KT a solid line but as it is the KT line is longer. -- View this messa...

Hello, I am working on a simple non-parametric (Theil) regression function and and am following Hollander and Wolfe 1999 text. I would like some help making my function faster. I have compared with pre-packaged version from "MBLM", which isnt very fast either, but it appears mine is faster with N = 1000 (see results below). I plan on runn...

...IED As told, I'm not confident with the syntax. Have I made it wrong? Or can you see anything else from the log that can pinpoint the problem? I would believe that there must be several admins out there who use the combination of of Samba and FreeBSD without having these problems. Cheers, Jon Theil Nielsen

...() for the Adjusted R-squared? How can I interpret it? There seem to exist several formula's to calculate Adjusted R-squared. Wherry’s formula [1-(1-R2)·(n-1)/(n-v)] McNemar’s formula [1-(1-R2)·(n-1)/(n-v-1)] Lord’s formula [1-(1-R2)(n+v-1)/(n-v-1)] Stein 1-(n-1/n-k-1)(n-2)/n-k-2) (n+1/n) Theil's formula (found here: http://en.wikipedia.org/wiki/Coefficient_of_determination) According to the textbook Field, Discovering Statistics Using R (2012, p. 273) R uses Wherry's equation which "tells us how much variance in Y would be accounted for if the model had been derived from th...

...reeBSD 9.0-RELEASE and my LDAP server seems to work otherwise. At least, I can do user authentication this way. Of course, I can provide much more information from the logs and the configuration files. I just don't know where to start. And any help would be much appreciated. Best regards, Jon Theil Nielsen

...with i FreeBSD. I haven't been able to find much information on this issue between FreeBSD and Samba, bur I'm sure there must be a solution. I don't know if the solution is to use another password database (e.g. LDAP), but this seems to be a rather complicated issue too. Regards, Jon Theil Nielsen

Dear sir Schwartz, In response to a granted online request to receive R code in order to generate Theil's Uncertainty coefficient, I was hoping I could receive the same favor. https://stat.ethz.ch/pipermail/r-help/2011-May/279210.html Thank you in advance, I hope to hear from you. Kind regards, Jos? Snoep Stagiair Universitair | MC ES - SOFY +31 6 13060740 Snoep.Jose at kpmg.nl<mailto:Snoe...

...file /etc/ppp/ppp.secrets containing usernames and passwords. After restarting the server, I can now connect from a Windows client. But will lose me access to the Internet (missing DNS), and I cannot join the Samba domain. I hope someone and lead me in the rigth direction... Regards, Jon -- Jon Theil Nielsen

...with 2.2.2? cheers, Arnaud -- Linux / Unix Expert R&D - Eaton - http://www.eaton.com/mgeops Network UPS Tools (NUT) Project Leader - http://www.networkupstools.org/ Debian Developer - http://people.debian.org/~aquette/ Free Software Developer - http://arnaud.quette.free.fr/ 2009/2/18 Volker Theile <votdev at gmx.de> > Hi again, > > forgot to mention that i did the tests the following way: > > freenas:~# setenv UPSNAME ups > freenas:~# setenv NOTIFYTYPE ONLINE > freenas:~# upssched > Executing command: resume > Segmentation fault (core dumped) > > free...

I have setup a samba pdc for my domain and it's working fine. The users also get a network share as I would like. But when I go to the network neighborhood, I see both the users home directory but also a "Homes" share. As far as I can see, the content is the same, but I don't like that way to do it. Is there a way to only show the home directory? Best regards, Jon

...it exhibits the same problems as does my code and another example found elsewhere on the Internet, namely NA results for all fields of interest, as follows: Time difference of 0.776551 secs for LNO fit across 2 distributions $datOut State obsMean distribution estMean var cv cv_sqr gini theil MLD 1 California NA LNO NA NA NA NA NA NA NA 2 Texas NA LNO NA NA NA NA NA NA NA SDL aic bic didConverge logLikelihood nparams median sd 1 NA NA NA FALSE NA NA NA NA 2 NA NA NA FALSE...

Hello All, My question is not directly related to R but rather on which statistical method I should look in to for capturing the entropy of a data-set as a number. In this figure http://www.twitpic.com/18sob5 are two data sets blue and green (x-axis is time) that fluctuate between (-1,+1). Clearly, green has 4 jumps while blue has 1 (and a some?). Intuitively, green has more entropy than blue. Is

Hello, I am analyzing some climate time series data using the Mann Kendall package and was wondering if there was a way to calculate the trend using Sen's nonparametric estimator slope in R? Thank you in advance, Barry _________________________ Barry Baker, Ph.D. Global Climate Change Initiative The Nature Conservancy 2424 Spruce St., Suite 100 Boulder, CO 80302 Tel: (303)-541-0322 Fax: