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An experimental method is presented for treating diversity of evaluation for alternative regional policies with conflicting multiple objectives. A measure to assess the risk that an implementation of alternative regional policies are constructed under an efficiency criterion based on sensitivity analysis of multiattribute utility functions. Then an entropy problem is solved to evaluate dispersion of selection for policy attributes; the diversity of evaluation is considered under an equity criterion. The default index is constructed from the probability assessment by the entropy model for measuring quantitatively the diversity of evaluation, and is used to compare the acceptability of alternative policies to various groups in society. The method is applied to an empirical case study of a regional problem in the southern part of Osaka Prefecture in Japan.