出版社：Charles University in Prague, Faculty of Social Sciences, Institute of Economic Studies ; CEEOL
摘要：Information function method is a powerful tool for analyzing the information requirements of social welfare functions. However, the original information function provides only a coarse description of information structure. In this article, we propose a refinement of this method by changing the range of the information function. We also analyze the role of partially relevant information in preference aggregation through an application of the refined version of the information function method.
关键词：Preference aggregation; independence condition; information function; partially relevant information
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