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
- 16 Jul 2020, 13:18
- Forum: Bug reports
- Topic: Problems with multi-core in R4.x
- Replies: 1
- Views: 5921
Problems with multi-core in R4.x
Here is feedback to those who use Mac OS to run R4.X via RStudio. Currently, RStudio does not support parallel::makeCluster(), meaning that you may not be able to run multi-cores using nCores in apollo_control. But nCores is fine if you run R4.X and apollo via terminal. The issue may be fixed in the...
- 16 Jul 2020, 13:17
- Forum: Bug reports
- Topic: Prediction of mixed MDCEV models
- Replies: 2
- Views: 6772
Re: Prediction of mixed MDCEV models
Dear Dr. Hess:
Thank you for the prompt response. I was able to get the summarized statistics for each alternative by using the v0.0.1.
Regards,
Yishih
Thank you for the prompt response. I was able to get the summarized statistics for each alternative by using the v0.0.1.
Regards,
Yishih
- 13 Jul 2020, 06:58
- Forum: Bug reports
- Topic: Prediction of mixed MDCEV models
- Replies: 2
- Views: 6772
Prediction of mixed MDCEV models
Dear all I have two questions concerning the application of ‘apollo_prediction’ to MDCEV and mixed MDCEV models. 1. Following the instructions in the manual, I could get the predicted values (mean and standard deviation) for each alternative at the observation level when the input model was an MDCEV...