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Problem with estimation of MDCNEV model

Posted: 03 Dec 2020, 12:38
by eeshanbhaduri01
I am currently working on an MDCNEV model but keep on getting the error message which reads -

Error in if (all(testL == 0)) stop("\nAll observations have zero probability at starting value for model component \"", :
missing value where TRUE/FALSE needed
Traceback---
3.
apollo_mdcnev(mdcnev_settings, functionality)
2.
apollo_probabilities(apollo_beta, apollo_inputs, functionality = "validate")
1.
apollo_estimate(apollo_beta, apollo_fixed, apollo_probabilities,
apollo_inputs)

I have tried the possible solutions suggested in Apollo website FAQs but those do not seem to work. Currently, I am working with the simplest possible specification of the model (=starting values) with alpha_base(=0), gamma for all modes(=1), delta for all modes(=1), sigma(=1), panel(=0), nesting coefficient theta (=0,1)

Let me know if anybody can help. Thanks in advance.

Best,
Eeshan

Re: Problem with estimation of MDCNEV model

Posted: 04 Dec 2020, 17:45
by dpalma
Hi Eeshan,

It is hard to diagnose the problem without looking at the code. If you post your code, we might be able to find the issue.

Best wishes
David