Dear Prof. Hess
I am very sorry for my stupid mistake.
The module works now.
Thank you and best regards,
Joe
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
- 15 May 2023, 07:42
- Forum: Model specification
- Topic: Error of "Parameter does not influence the log-likelihood of model"
- Replies: 2
- Views: 2840
- 07 May 2023, 08:35
- Forum: Model specification
- Topic: Error of "Parameter does not influence the log-likelihood of model"
- Replies: 2
- Views: 2840
Error of "Parameter does not influence the log-likelihood of model"
Dear developers, I want to use a mixed logit model to do estimation. Below is my code and I got the error: Testing influence of parameters......Error in apollo_estimate(apollo_beta, apollo_fixed, apollo_probabilities, : Parameter mu_Efficiency_L2 does not influence the log-likelihood of your model! ...
- 15 Mar 2022, 00:38
- Forum: Estimation results
- Topic: Latent class fail with "No covariance matrix to compute"
- Replies: 2
- Views: 2498
Re: Latent class fail with "No covariance matrix to compute"
Dear Stephane,
Thank you a lot for your prompt reply and for pointing out the issues.
I am sure that I am using the 0.2.7 version of Apollo. I have changed the type of draws and extent the iteration to 300. Hope they could work.
Many thanks again,
Joe
Thank you a lot for your prompt reply and for pointing out the issues.
I am sure that I am using the 0.2.7 version of Apollo. I have changed the type of draws and extent the iteration to 300. Hope they could work.
Many thanks again,
Joe
- 14 Mar 2022, 02:36
- Forum: Estimation results
- Topic: Latent class fail with "No covariance matrix to compute"
- Replies: 2
- Views: 2498
Latent class fail with "No covariance matrix to compute"
Hi I am using the Latent class with continuous random parameters. The model failed saying "Estimation failed. No covariance matrix to compute" and the results come out with NaNs. Could you please kindly let me know what should I do to solve this problem? Many thanks in advance. Code for my...