log linear

  1. J

    Loglinear model = Ising model?

    Is it true that an hierarchical log-linear model of order two which includes all the interactions of order two between the binary variables X1, . Xp is an Ising model? I saw this on a online documentation, but the subject is not developed. I find the Ising model pretty interesting, but a bit...
  2. D

    Why do we differentiate between log linear vs. exponential time series

    Given by definition for a function to be linear on a log plot, it must be exponential (bc log_a(e^x)=x), why do we differentiate between log linear and exponential things?
  3. W

    How to analyze a categorical confounding variable for experimental results

    I ran an experiment. The experiment had 3 conditions (C1,C2,C3). I analyzed the results which are countably infinite variables (e.g. - number of points) or a finite set of numbers (e.g. - on a scale of 1-5 how much did you like this?). I have two questions in regards to this data and possible...
  4. I

    Categorical Data Analysis: log linear analysis

    Hey guys, I'm very new to statistics so I have a question: Consider gender (G), neuroticism (N), openness (O), major depression (MDD), and generalized anxiety disorder (GAD). I am using MDD and GAD as response variables and the others as explanatory. I have to perform a loglinear...
  5. R

    Interpretation of coefficients, dependent variable in (%), independent variable in ln

    Hi, I have a very simple question. I have the following equation. My dependent variable is CRES which is the share of renewables in a country's energy supply. My independent variables are log transformed, besides Kyoto which is a dummy variable. CRES= β0 + β1lnGDP + β2Kyoto+...
  6. C

    Predictions after mean-centred regression

    Hi, I wonder if anyone can help me with a problem I'm having. I just performed an ordinary (LS) regression in which both the dependent and independent variables were logged (the model is log-linear) and grand-mean-centred. The results look good. However, for my purposes, I need to be able to...
  7. A

    Fitting log-linear models to survey data with cluster variance corrections.

    Dear folks-- This is not exactly a psych question, but I thought this was the forum wher I would find the most knowledge about log-linear models. If i shold relocate the question, please let me know. If you have catagorical count data from a large survey, with reported varience estimates fo...
  8. S

    log linear model for dependence

    Hi I fitted a log linear model (proc genmod dist=negative binomial link=log) to see any dependence/association between 3 categorical variables. I know how to evaluate the best model but i have difficulty to explain the following output. parameter p-value...
  9. S

    Categorical data goodness of fit question

    Hello, I am trying to fit a log linear model with proc genmod and when i include all interactions (3 variables) i get the following: Criterion DF Value Value/DF Deviance 0 0.0000 . Scaled Deviance 0...