Important: Read this before posting to this forum

  1. 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.
  2. 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
  3. Before asking a question on the forum, users are kindly requested to follow these steps:
    1. Check that the same issue has not already been addressed in the forum - there is a search tool.
    2. 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
    3. Check the frequently asked questions section on the Apollo website, which discusses some common issues/failures. Please see http://www.apollochoicemodelling.com/faq.html
    4. Make sure that R is using the latest official release of Apollo.
  4. If the above steps do not resolve the issue, then users should follow these steps when posting a question:
    1. provide full details on the issue, including the entire code and output, including any error messages
    2. 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

by dasham
11 Oct 2021, 08:51
Forum: Errors during model validation and/or estimation.
Topic: Error in model estimation for LC model with class allocation and covariates
Replies: 3
Views: 4203

Error in model estimation for LC model with class allocation and covariates

Hello, I am running a model based on Example 20 (http://www.apollochoicemodelling.com/files/Apollo_example_20_output.txt). When I estimate the model, however, I get an error: Error in if (any(round(classprobsum, 10) != 1)) stop("Class allocation probabilities in 'classProb' for model component ...
by dasham
20 May 2021, 15:00
Forum: Bug reports
Topic: Error in Bayesian estimation between Apollo versions
Replies: 5
Views: 13692

Error in Bayesian estimation between Apollo versions

Hi, My colleagues and I are running a Bayesian estimation of a mixed logit model. I have apollo version 0.1.0 which I downloaded last year and they have the most updated one. We are running the exact same code and using the same files - however, they receive a warning at the end of the estimation th...