```Date: Mon, 8 Nov 1999 19:04:19 +0100 Reply-To: Thomas Otter Sender: "SPSSX(r) Discussion" From: Thomas Otter Subject: Re: Conjoint Analysis In-Reply-To: Content-Type: text/plain; charset="us-ascii" At 09:26 08.11.99 -0600, you wrote: >Hello, > >Could anyone please explain how the three different probability-of-choice >models are calculated: >a) The maximum utility model Calculate total utilities for all profiles in the choice set to be evaluated and assume that every individual deterministically chooses the profile with maximum utility. Allocate 100% choice probability to this profile and 0% percent to all other profiles. Note that in applied settings the procedure is not that deterministic as it may appear becaues estimated partworths contain error. >b) The Bradley Terry-Luce model Divide the total utility of profile i by the sum of all total utilities in the choice set to estimate an indivual's choice probability for profile i. >c) The Logit model Similar to the BTL model but take exp(total utility of profile i) and divide by the sum of all exp(utility) in the choice set to estimate an indivual's choice probability for profile i. Regards, Thomas Otter > >Any help would be greatly appreciated. > >Mei-chih Huang > > ```

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