Have an idea?

Visit Sawtooth Software Feedback to share your ideas on how we can improve our products.

HB has the ability to provide estimates of individual part worths given only a few choices by each individual.

Hi,

The material on Sawtooth site regading "CBC/HB V5" specifies 'HB has the ability to provide estimates of individual part worths given only a few choices by each individual. It does this by borrowing information from population (means & covariances) describing the preferences of other respondents in same dataset.'

Does this mean it is influenced by responses provided by other respondents?

Regrads
Malhar
asked Oct 16, 2012 by mal_saw2001 Bronze (875 points)
edited Oct 16, 2012 by Walter Williams

1 Answer

+1 vote
Individual scores are determined by the underlying probability of choice distribution for each level (determined from overall responses) and also their individual responses, which dictate where they fit on the underlying distribution. This occurs for each level, subject to constraints, which veto possibly better fitting, but less logical solutions (in effect the analyst determines that non-logical responses are just random noise). I’m unclear if ‘similar respondents’, defined by an overlap of 'known' levels, are used to fill in the ‘missing data’ for each respondent, where the known information does not overlap, or if this is just inferred from the overall probability distribution.
answered Oct 16, 2012 by Andrew Reynolds Bronze (1,140 points)
Thanks Andrew!
I suppose HB makes use of covariates which bring similar respondents together and then uses it for estimation. Not sure if this is the logic behind above questions
...