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Utilities estimation with multinominal logit

Hello, i would like ask a question about how to calculate utilities for interactions with single questions in sawtooth. utilities for each level attribute is easy. But for interaction i don't know how to estimate them?

Thak you for helpoing me

related to an answer for: How to interpret the t-ratio?
asked Mar 19, 2015 by Louiza

1 Answer

0 votes
Hello, Louiza,

If you're using SSI Web, select Analysis>Settings>Attribute Coding and then at the bottom of the screen you'll be able to check a box to indicate that you want to add interactions to your model.  After checking that box lists will appear that allow you to select which attributes you want to allow to interact.
answered Mar 21, 2015 by Keith Chrzan Platinum Sawtooth Software, Inc. (93,025 points)