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 3 matches
- 13 Mar 2022, 20:18
- Forum: Model specification
- Topic: FMNL Model: Including Explanatory Variables
- Replies: 1
- Views: 1974
FMNL Model: Including Explanatory Variables
Hi, I am estimating a fractional logit model where the alternatives are % of land in different crop types. After reviewing the example on this site and the manual, I cannot figure out how to add additional explanatory variables to the model. More specifically, I have my ascs for choice share, but am...
- 26 May 2020, 19:10
- Forum: Post-estimation analysis/use of results
- Topic: Estimating the average marginal effects of a mixed logit within Apollo's post-estimation functions?
- Replies: 2
- Views: 5418
Re: Estimating the average marginal effects of a mixed logit within Apollo's post-estimation functions?
Hi Stephane,
Thank you so much for your thorough, clear response. This is a great help!
All the best,
Brenna
Thank you so much for your thorough, clear response. This is a great help!
All the best,
Brenna
- 21 May 2020, 22:47
- Forum: Post-estimation analysis/use of results
- Topic: Estimating the average marginal effects of a mixed logit within Apollo's post-estimation functions?
- Replies: 2
- Views: 5418
Estimating the average marginal effects of a mixed logit within Apollo's post-estimation functions?
Hello, I was hoping for some guidance in estimating average marginal effects for the coefficients of a mixed logit. I was able to follow the instructions in the manual and a few of the posted examples to estimate average marginal effects for a multinomial logit, but am unable to determine how to app...