Probabilistic elicitation of expert knowledge through assessment of computer simulations
英文摘要：
We present a new method for probabilistic elicitation of expert knowledge using binary responses of human experts assessing simulated data from a statistical model, where the parameters are subject to uncertainty. The binary responses describe either the absolute realism of individual simulations or the relative realism of a pair of simulations in the two alternative versions of out approach. Each version provides a nonparametric representation of the expert belief distribution over the values of a model parameter, without demanding the assertion of any opinion on the parameter values themselves. Our framework also integrates the use of active learning to efficiently query the experts, with the possibility to additionally provide a useful misspecification diagnostic. We validate both methods on an automatic expert judging a binomial distribution, and on human experts judging the distribution of voters across political parties in the United States and Norway. Both methods provide flexible and meaningful representations of the human experts' beliefs, correctly identifying the higher dispersion of voters between parties in Norway.
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