Important: Read this before posting to this forum
- 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.
- 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
- Before asking a question on the forum, users are kindly requested to follow these steps:
- Check that the same issue has not already been addressed in the forum - there is a search tool.
- 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
- Check the frequently asked questions section on the Apollo website, which discusses some common issues/failures. Please see http://www.apollochoicemodelling.com/faq.html
- Make sure that R is using the latest official release of Apollo.
- Users can check which version they are running by entering packageVersion("apollo").
- Then check what is the latest full release (not development version) at http://www.ApolloChoiceModelling.com/code.html.
- To update to the latest official version, just enter install.packages("apollo"). To update to a development version, download the appropriate binary file from http://www.ApolloChoiceModelling.com/code.html, and install the package from file
- If the above steps do not resolve the issue, then users should follow these steps when posting a question:
- provide full details on the issue, including the entire code and output, including any error messages
- posts will not immediately appear on the forum, but will be checked by a moderator first. This may take a day or two at busy times. There is no need to submit the post multiple times.
Search found 4 matches
- 07 Feb 2022, 19:33
- Forum: Model specification
- Topic: How can I specify multi-level MNL?
- Replies: 6
- Views: 4118
Re: How can I specify multi-level MNL?
I see, thank you!
- 07 Feb 2022, 15:00
- Forum: Model specification
- Topic: How can I specify multi-level MNL?
- Replies: 6
- Views: 4118
Re: How can I specify multi-level MNL?
Hi,
I have three such groups.
I have three such groups.
- 02 Feb 2022, 22:06
- Forum: Model specification
- Topic: How can I specify multi-level MNL?
- Replies: 6
- Views: 4118
Re: How can I specify multi-level MNL?
Hi, Thank you for your reply. Yes, the effect would drop out, as you said. Only one utility function would have the additional effect term in it. By multi-level, I mean there will be random effects caused by the group the individuals belong to, which cause additional random terms added in the utilit...
- 02 Feb 2022, 04:16
- Forum: Model specification
- Topic: How can I specify multi-level MNL?
- Replies: 6
- Views: 4118
How can I specify multi-level MNL?
Hi, I'm wondering if there is any way to specify multi-level MNL? I guess it is related to the mixed logit model, but I'm not sure how to specify it. For example, individuals live in different areas, and individuals living in the same area have the same random effect influencing the utility function...