Do Government Agencies Use Public Data?: The Case of GNP
研究美国商务部是否充分利用其他政府机构发布的公开信息来改进GNP估算，发现信息利用效率在初步估算变动较大时尤其低下。
In 1991, the U.S.Council of Economic Advisers undertook an initiative to increase the quality of economic statistics. One specific objective was to reduce the size of revisions in GNP estimates. We present evidence that one straightforward and inexpensive way of forwarding this objective is for the Department of Commerce to utilize better publicly available information released by other governmental agencies. An important caveat, however, applies: the relationship appears to be non-linear. Specifically, the inefficient use of information is concentrated in those quarters where the change in the preliminary GNP estimate is large in absolute value.