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 2 matches
- 08 Mar 2024, 05:09
- Forum: Estimation results
- Topic: correlation between latent variables in hybrid model
- Replies: 3
- Views: 3668
Re: correlation between latent variables in hybrid model
Hi Stephane, Thank you for your response. I did what you suggested and Sigma is estimated as 0.28 and is significant. So I guess I should mention that my latent variables are positively correlated. However, I'm unsure about the necessity of normalization and how to proceed with it. Could you please ...
- 29 Jun 2023, 09:39
- Forum: Estimation results
- Topic: correlation between latent variables in hybrid model
- Replies: 3
- Views: 3668
correlation between latent variables in hybrid model
Hi, I am using Apollo to predict a hybrid model with two latent variables. However, the example in the manual only includes one latent variable, so I have a few questions. I made some adjustments to the code to accommodate two latent variables, assuming it considers a standard normal distribution fo...