Important: Read this before posting to this forum

  1. This forum is for questions related to the use of Apollo. We will answer some general choice modelling questions too, where appropriate, and time permitting. We cannot answer questions about how to estimate choice models with other software packages.
  2. There is a very detailed manual for Apollo available at http://www.ApolloChoiceModelling.com/manual.html. This contains detailed descriptions of the various Apollo functions, and numerous examples are available at http://www.ApolloChoiceModelling.com/examples.html. In addition, help files are available for all functions, using e.g. ?apollo_mnl
  3. Before asking a question on the forum, users are kindly requested to follow these steps:
    1. Check that the same issue has not already been addressed in the forum - there is a search tool.
    2. Ensure that the correct syntax has been used. For any function, detailed instructions are available directly in Apollo, e.g. by using ?apollo_mnl for apollo_mnl
    3. Check the frequently asked questions section on the Apollo website, which discusses some common issues/failures. Please see http://www.apollochoicemodelling.com/faq.html
    4. Make sure that R is using the latest official release of Apollo.
  4. If the above steps do not resolve the issue, then users should follow these steps when posting a question:
    1. provide full details on the issue, including the entire code and output, including any error messages
    2. posts will not immediately appear on the forum, but will be checked by a moderator first. We check the forum at least twice a week. It may thus take a couple of days for your post to appear and before we reply. There is no need to submit the post multiple times.

Search found 4 matches

by felix
15 Jan 2025, 11:16
Forum: Model estimation
Topic: (Very) Long Pre-estimation Time for MNL
Replies: 6
Views: 49581

Re: (Very) Long Pre-estimation Time for MNL

Hi Stephane,
Thanks again for your help, I implemented your suggestions (I now have unlabelled alternatives, and no missing values) and it works great now. I have one more related follow-up question. I am now able to estimate a mixed logit model, and using my data and a slightly larger model I get ...
by felix
18 Dec 2024, 15:25
Forum: Model estimation
Topic: (Very) Long Pre-estimation Time for MNL
Replies: 6
Views: 49581

Re: (Very) Long Pre-estimation Time for MNL

Hi Stephane,

Thanks for having a look at this. I will implement it in the way you suggested, which would then also enable me to use the provided function to assess computing time properly.

Best,
Felix
by felix
13 Dec 2024, 11:47
Forum: Model estimation
Topic: (Very) Long Pre-estimation Time for MNL
Replies: 6
Views: 49581

Re: (Very) Long Pre-estimation Time for MNL

Thanks, I sent you a message. Please let me know in case you did not receive it (it does not appear in my "sent messages" but in my "outbox")
by felix
09 Dec 2024, 12:36
Forum: Model estimation
Topic: (Very) Long Pre-estimation Time for MNL
Replies: 6
Views: 49581

(Very) Long Pre-estimation Time for MNL

Hi everyone,
First of all, thanks for providing this very useful package and especially the detailed documentation and examples. I found the "step-by-step" approach extremely useful and the warning and error messages helped me to eliminate bugs (in my data) easily.

Overall goal
I am looking for ...