# Tagged Questions

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### How can I calculate utilities for attribute levels in conjoint analysis in R?

I conducted a stated preference survey in which each respondent had to choose 1 set out of 3 choice sets (A, B and C), which are characterised by 4 attributes (let's say brand, color, size and ...
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### Modeling Sequential Discrete Choices

In my experiment, I have a finite set of discrete choices (or alternatives) $S$ in which I ask each participant to select a non-empty subset $s \subseteq S$ and rank the elements in $s$ in their ...
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### Rare event ordinal logit with discrete response $Y_t \in \{1,2,3\}$

I have a response variable in $Y(t) \in \{1,2,3\}$ and I am considering to use ordinal logit to model it. We have $3000$ instances of $Y(t)=1$, $3000$ instances of $Y(t)=3$ and $2\,000\,000$ instances ...
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### Difference between multinomial logit regression and multinomial logistic regression

Is there a difference between the two models - multinomial logit regression and multinomial logistic regression?
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### Why {glmnet} can be calculated parameters for all category?

For my understanding, multinomial logit model requires to restrict the parameters for one category to zeros. However, package{glmnet} seems to allow different parameters to every class. Could someone ...
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### Binary or multinomial logit?

I am having some doubts on whether I should use binary or multinomial logit. I am modelling product choice. The dependent variable is the choice of either shampoo or toothpaste. Although my dependent ...
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### Alternatives to the multinomial logit model

I am trying to estimate a model of occupational choice with three choices. Are there any alternatives to using the multinomial logistic regression when handling such unordered categorical outcomes? ...
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### Multinomial Logit with mlogit and Yogurt Data

I am using the mlogit package in R to estimate a choice model, I started with the famous Yogurt dataset. ...
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### Estimate multinomial probit model with mlogit (R package)

From the document and help, probit model is supported by mlogit. But when I tried it with these R scripts, the estimation takes much longer time to run (than the logit verion) and the result is quite ...
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### Meaning of intercept in multinomial regression with binary predictors?

I am doing a multinomial regression and trying to interpret the results: In the basic model there is only one binary predictor variable (0 = high risk scenario, 1 = low risk scenario), the dependent ...
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### Replication in multivariate logit in R

I am new to both logit models and GLMs, but I think one of those two model classes might be the correct analysis for my data set: I am interested in comparing the composition of the diet of fish ...
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### Which logit/probit model do I use for multiple reponse/dependent variables?

I have $300$ time series objects that constitute the $300$ columns of matrix $X$. This matrix has $5$ rows and represents $5$ days of time series information for each $300$ columns. I set up a ...
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### Combination of multinomial logit model and logit model

I want to analyze the determinants of credit constraints of a firm. I have information for both formal and informal credit. I have 6 categories of credit-constraint statuses of a firm for formal ...
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### Using multinomial regression's coefficients to derive predicted outcomes in C#

I am attempting to use C# (and the alglib library) to calculate the predicted probability that an outcome ends up in one of five classes. I have managed to calculate parameter estimates (i.e. slope ...
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### Singularity issues in multinomial model using R

I am trying to develop a mode choice model (4 modes: hov, transit, bike, walk) and below are two approaches I am using. I am having problems in both Approach 1 Mode choice as a function of price ...
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### Unidentified variables in multinomial model

I am building a simple multinomial logit (MNL) model. I've discovered that the particular variable that I am testing ("pctLS") causes the model to be "unidentified," but I am not sure how to correct ...
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### Interaction Terms and Logit Models

I have read the previous discussions on interaction effects and main effects, and I have a question on the subject. I am running a destination choice model (multinomial logit), and I have one ...