when I use "mlogit" in R, after I add some interaction variable and run the model,
why it said that:
error in if(is.null(initial.value)||lnl
It might be helpful if you showed some code and some data
Best, D. Booth
BTW you did compute the values of the interaction variable, Right?
Either lnl or initial.value or both are NA. Check why this is the case.
Will this thread help you -
https://stackoverflow.com/questions/45663766/r-mlogit-model-missing-value-where-true-false-needed-20-invalid-factor-level
Many Thanks, Everyone, I have solved the problem, it was because missing value in the data frame.
As we know, when we analysis the factor variable in R, it always present n-1 factor variables, hiding one variables. When we use effect coding, and we want to know the coefficient, SD, SE of that...
01 January 1970 3,300 8 View
dear community, my model is based feature extraction from non stationary signals using discrete Wavelet Transform and then using statistical features then machine learning classifiers in order to...
03 March 2021 6,994 5 View
Hello, I'm fairly new to ARENA and I have the following problem: I have two queues in which, in each queue, a different order type arrives (both having an arrival rate of exponential 10). Order...
02 March 2021 2,431 3 View
Good afternoon, I recently used OmniLog from BIOLOG for my experimentations : I tested the metabolism of different strains on 2 types of plates. I have 16 strains of 3 different groups...
02 March 2021 3,584 1 View
In R-studio, there are many commands of Gumbel package. Arguments are also different. I`m asking about the alpha parameter of the Copula which must be greater than 1. If this is the one used to...
25 February 2021 5,229 3 View
I do need the Matlab code of Fractal Discrete Cosine Transform (FDCT). Can anyone who has already implement this code, help me with the implementation of this transform?
24 February 2021 5,602 2 View
I am looking for implementation of bayesian decision trees and bayesian regression trees in Python and/or R.. Do you know if the existing libraries support this
23 February 2021 6,689 3 View
Hi everyone. I am researching droguht effects on soil water drought. I am looking for already implemented functions in R or Python to estimate soil water content from precipitation,...
21 February 2021 2,084 1 View
The sections are about awareness, practice, and perception regarding waste management. Thanks
20 February 2021 5,722 3 View
Hi, I have a simple question. I am hoping to perform a power analysis/sample size estimation for an RCT. We will be controlling for baseline symptoms, and using post-treatment or change scores as...
19 February 2021 2,648 23 View
Dear colleagues, I'm working with Path analyses in lavaan and MVN packages. There are some results that for me are confusing and features from the MVN that I do not know how to set. My dataset is...
18 February 2021 190 3 View