Hi all,
I have been analysing a DCE with three alternatives (1 opt out) which includes 5 attributes, 1 categorical with 4 levels (dummy coded) and 4 continuous variables. The utility function is defined with 1 ASC (as the ASCs were very similar and the use of 1 did not impact model fit statistics ...
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Search found 3 matches
- 30 Apr 2026, 14:00
- Forum: Models and estimation
- Topic: Large standard deviations of correlated Mixed Logit
- Replies: 1
- Views: 722
- 13 Oct 2025, 08:32
- Forum: Errors during model validation and/or estimation.
- Topic: Latent Class - BHHH matrix singular
- Replies: 3
- Views: 37987
Re: Latent Class - BHHH matrix singular
Hi Stephane,
See below for the screen output:
> # ################################################################# #
> #### MODEL OUTPUTS ...
See below for the screen output:
> # ################################################################# #
> #### MODEL OUTPUTS ...
- 10 Oct 2025, 12:26
- Forum: Errors during model validation and/or estimation.
- Topic: Latent Class - BHHH matrix singular
- Replies: 3
- Views: 37987
Latent Class - BHHH matrix singular
Hiya,
I need some help with running a simple latent class model with 2 classes. The model gives the following error: "WARNING: Estimation succeeded but the BHHH matrix is singular. Apollo will not attempt to compute the covariance matrix." I am not certain what the issue is - its either typographic ...
I need some help with running a simple latent class model with 2 classes. The model gives the following error: "WARNING: Estimation succeeded but the BHHH matrix is singular. Apollo will not attempt to compute the covariance matrix." I am not certain what the issue is - its either typographic ...