ApolloChoiceModelling forum

That makes sense. Thank you very much for your answer! :) EDIT: I got another question related to metrokim217's question about scaling: Is there a reason to scale the variance of the LV rather than setting the scale of the LV equal to the scale of an indicator (or the indicator which is assumed to b...

Hello everyone, sorry to bring this old forum thread back to life, but I didn't want to open a new thread for my question: I have a data set where the ICLV model works fine if I only use socio-demographic variables for the structural equations.On the other hand I read the following in the "Hand...

Hello everybody, I recently read Article “ Hess et al. (2018) - Analysis of mode choice for intercity travel: Application of a hybrid choice model to two distinct US corridors) ” in which the Hybrid Choice Model was estimated using the Bayesian approach.Now I wanted to try estimating a HCM using HB ...

Hi Stephane,

thank you very much for the tip. I will take this into account. However, just out of curiosity: Does my specification for the price attribute work, or have I missed something, e.g. wrong interpretation of the coefficients?

Best wishes
Nico

Good idea! The only problem with my data is that I have two sets of data (N = 941 and N = 58). With the second dataset, I have too few observations, especially in some income classes, to estimate five parameters for price. :cry: In total, I have three variables whose influence on the price coefficie...

Okay, thanks. Actually, I do not have a problem with missing values. A small example: In your survey, a respondent has an income of 2000 euros per month and the average income is 3000 euros. So it can be said that this participant's income is two thirds of the median income. It is possible to interp...

Hi Stephane, Thanks for your quick response. I have two questions about it: (1) My code now looks as follows: b_Price_value = ( b_Price + b_TariffSwitched_Price * COV_TariffSwitched ) * ( COV_Income / COV_Income_Mean ) ^ elast_Price_Income * ( COV_PriceMonthly / COV_PriceMonthly_Mean ) ^ elast_Price...

Hello, everyone, I have two questions for you experts. ;) (1) Covariates in WTP space I have formulated a MIXL model in WTP space (Bayesian estimation) and would like to incorporate some covariates. I have specified the parameters as follows... wtp_Attribute1Level2_value = wtp_Attribute1Level2 + ## ...

Okay, in my case the scale parameter is definitely different from 1: Mean SD mu_CBC 0.6887 0.0291 mu_SDR 1.0000 NA The "CBC" is part of the survey with the forced choice sets, the "SDR" the part with the free choice sets. How can I test, " [...] whether a joint model is not ...

Hello, everyone, i would like to know from you if there is a rule of thumb, when to use which kind of draws (Halton, Sobol, MLHS, ...)? During my research, severel papers recommended not to use Halton draws due to correlation with a high number of parameters. For example, the paper... Czajkowski, Mi...