search for: ordaz

Displaying 8 results from an estimated 8 matches for "ordaz".

Did you mean: oraz
2008 Feb 23
1
Aranda-Ordaz
Hi all, Does anyone know R code or SAS code for Aranda-Ordaz link family? thanks, xiao yue --------------------------------- [[alternative HTML version deleted]]
2009 Oct 23
1
making a plot in xyplot
...m, data=mydata, type="b"). Now I would like to make all the teens' lines one color and the adults' another. Additionally, I'd like to reformat the dots so that the points referencing condition 1 and condition 2 are different. Can you help me with this? Thanks! Sarah Sarah Ordaz ordazs@upmc.edu<mailto:ordazs@upmc.edu> Laboratory of Neurocognitive Development University of Pittsburgh 121 Meyran Avenue Loeffler Building Rm 113 Pittsburgh, PA 15213 412.383.9972 http://www.wpic.pitt.edu/research/lncd/ [[alternative HTML version deleted]]
2012 Mar 01
2
User defined link function with extra parameters
Hello R users, I would like to fit a generalized linear model for the binomial family with some non standard link functions. For instance, this is the Aranda-Ordaz link: ? = ln( ( (1 - ?)^-? - 1 )/?) I know how to define a new link function to use with glm(), but I my problem is that I have an extra parameter to estimate and I have no clue how to incorporate that. Is there any way to tell glm() to add this parameter in the estimation or do I have to writ...
2001 Dec 18
2
Aranda-Ornaz links for binary data
Hi, I would like apply different link functions from Aranda-Ordaz (1981) family to large binary dataset (n = 2000). The existing links in glm for binomial data (logit, probit, cloglog) are not adequate for my data, and I need to test some other transformations. Is it possible to do this in R? And how? Thank you for your help, /Sharon ++++++++++++++++++++++++...
2010 Mar 16
0
New package: ordinal
...the Laplace approximation and adaptive Gauss-Hermite quadrature in the location-part of the model. - a range of standard link functions - flexible link functions where an extra link function-parameter bridges the log-log, probit and c-loglog links (log-gamma), and cloglog and logistic links (Aranda-Ordaz) - a suite of optimizers including an efficient Newton scheme. - works for binomial observations (a special case of ordinal data). - a suite of methods including anova, addterm, dropterm, profile, confint, plot.profile, predict, in addition to the standard print and summary methods. - an important...
2010 Mar 16
0
New package: ordinal
...the Laplace approximation and adaptive Gauss-Hermite quadrature in the location-part of the model. - a range of standard link functions - flexible link functions where an extra link function-parameter bridges the log-log, probit and c-loglog links (log-gamma), and cloglog and logistic links (Aranda-Ordaz) - a suite of optimizers including an efficient Newton scheme. - works for binomial observations (a special case of ordinal data). - a suite of methods including anova, addterm, dropterm, profile, confint, plot.profile, predict, in addition to the standard print and summary methods. - an important...
2007 Oct 26
5
help
hello, please can anyone help me out. Am a new user of R program. Am having problem with this code below, not getting the expected results. 1. Each m, the cumulative sum should be 1.000 but the 2nd and 3rd m returned 2.000 and 3.000 instead of 1.000. 2. to get the LCL(m) and UCL(m) for each m base on these instructions if out.cum > 0.025 then LCL(m)= y-1 if out.cum >0.975
2011 Jul 31
5
ajuste de modelos logísticos con heterocedasticidad
Hola a todos. ¿Cómo puedo ajustar un modelo de regresión logística en el que la varianza de los errores no son iguales, sino que esta puede ser modelada por otras variables ? ¿Utilizando modelos mixtos o voy desencaminado? Gracias..