ApolloChoiceModelling forum

Hi all, With the help of David and Stephane, I have fixed the problem. The bug came from the typo in ol_settings2 = list(outcomeOrdered = FNS2 , # used to say FNS1 V = zeta_FNS2*LV, tau = list(tau_FNS2_1, tau_FNS2_2, Also, I enlarged the number of draws to 500. At the beginning, the program warned m...

Dear Stephane,

I've sent the data and model file to your Leeds email address.

Thank you for your help!

Best,
Xian

Dear Stephane,

Thank you for your reply!

Each respondent has only 12 rows of data. That is, with the same id number, there is either task==1 or task==2.

May I send you my data?

Best,
Xian

Dear Stephane,

I'm sorry that this post should be deleted because I have asked you the same question in another part of the forum.

Thank you pointing out my misunderstanding about latent variable.

Best,
Xian

Dear Stephane, Thank you so much for your reply! FNS1, FNS2, ..., FNS9 are the answers to the 9 questions in a psychometric scale. Each respondent was asked to answer 12 choice tasks plus the psychometric survey. Therefore, each respondent has the same set of answers for each row of choice task. Als...

Hi Stephane or David, I wonder why I keep getting NAs in the hybrid model. It worked when I start with a simpler one, with one or two latent variables (FNS1, FNS2). But when I include more, the model results NA for estimates, std error, and so on. My code are as below: # ############################...

Hi Stephane and David, I'm estimating a hybrid model. The latent variable, FNS, has 9 statements and each of them is of 7-point Likert Scale. Following your sample, I wrote the code like: # ################################################################# # #### LOAD LIBRARY AND DEFINE CORE SETTINGS...

I wonder if Apollo pkg can be used to run stop-go models. The model has two step, first predicts the probability of taking, then the choice of amount conditional on taking at least one unit.

Dear Stephane and Anna, First, thanks Anna for bringing out the question. Actually that's the fundamental question has troubled me for long. That's why I keep asking Stephane about WTP intervals (Thank you so much for your patience!!). While the coefficient estimated of the interaction term indicate...

Dear Stephane, Sorry to bother you again. since Delta Method only works out s.e, should I use "mean+-1.96*s.e" to calculate the interval? I don't think this formula suits multinomial logit as this assumes normal distribution instead of asymptotic normal of parameters. Could you please sugg...