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Like other designs, if priors are not available, I can start with zero priors for my pilot study?

In the original research article, you mentioned in your reply (Khan et al., 2021), they have used an external candidate set in Ngene. In this case even though a travel time distribution is used to represent both time and travel time reliability in the SP survey, the utility specification has ...

I defined the travel time reliability (TTR) attribute using five equiprobable outcomes (interpretable as five shipments), as follows:
Very high reliability: 4/5 times on time, 1/5 times 2 hours late
High reliability: 3/5 times on time, 2/5 times 3 hours late
Medium reliability: 2/5 times on ...

In some stated choice experiments, certain alternatives may systematically outperform others on some attributes (e.g., travel time reliability, travel time), while being worse on others (e.g., cost, frequency). For example, a bullet train service may always be faster and more reliable than a ...

Can I use a generic cost attribute when the attribute levels of the alternatives are different? For example in my DCE, cost(high speed intermodal transport) > cost(normal road transport) > cost(normal intermodal transport). For the time attribute its the opposite, time(normal road transport) > time ...

My aim is to develop an MNL model which will help me estimate priors for my final model. Initially, I used real reference levels to generate two models: one in which cost of alternatives are pivoted around $150 and another in which cost of alternatives is pivoted around $200, the values of the rest ...

Thanks for pointing out the differences between Ngene Online and Ngene Desktop.
I am using the following design with real reference levels:
design ? mode choice of shippers with Real data SurveyEngine (FINAL)
;alts(low)=truck, train, etrain
;alts(high)=truck, train, etrain
;rows=36
;block=3
;eff ...

Dear Michiel,
The example given in section 9.1 is related to unlabeled alternatives. My design has labelled alternatives and all attributes are not generic. But still I tried to follow the code given in script 9.1:
design ? mode choice of shippers with HOMOGENOUS DESIGN CODING
;alts=truck, train ...

Dear Michiel,

This was the original code:
design ? mode choice of shippers without reference alternative
;alts(withref)=ref, truck, train, etrain
;alts(withoutref)=truck, train, etrain
;rows=24
;block=2
;eff= withoutref(mnl,d)
;con
;model(withref): ?auxiliary model with reference alternative
U ...

I am designing a labelled choice experiment to estimate WTP for more reliable freight transport along a particular corridor. There are three labelled alternatives:
Normal Road Transport
Normal Intermodal Transport
High speed Intermodal Transport
The different attributes are:
Transport Cost ...