...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Agricultural and Applied Economics >An Evaluation of Crop Forecast Accuracy for Corn and Soybeans: USD A and Private Information Agencies
【24h】

An Evaluation of Crop Forecast Accuracy for Corn and Soybeans: USD A and Private Information Agencies

机译：玉米和大豆的作物预报准确性评估：USD A和私人信息机构

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Using 1971-2000 data, we examine the accuracy of corn and soybean production forecasts provided by the USD A and two private agencies. All agencies improved their forecasts as the harvest progressed, and forecast errors were highly correlated and unbiased. The relative forecast accuracy of the agencies varied by crop and month. For corn, USDA's forecasts ranked as most accurate of the three agencies in all periods except for August during the recent period and improved most markedly as harvest progressed. For soybeans, forecast errors were very similar, with the private agencies ranking as most accurate for August and September and making largest relative improvements for August during the recent period. The USDA forecasts were dominant for Octoberand November. Our findings identify several patterns of relative forecast accuracy that have implications for private and public decision makers.
机译：使用1971-2000年的数据，我们检查了美国农业部和两个私人机构提供的玉米和大豆产量预测的准确性。随着收割的进行，所有机构都改进了预报，预报误差高度相关且无偏见。这些机构的相对预测准确性因作物和月份而异。对于玉米，USDA的预测在最近三个月（除八月外）在所有三个时段中均是最准确的，并且随着收获的进行而显着改善。对于大豆，预测误差非常相似，在最近一段时间内，私营机构对8月和9月的准确度最高，而对8月的相对改善最大。美国农业部对10月和11月的预测最为明显。我们的发现确定了相对预测准确性的几种模式，这些模式对私人和公共决策者都有影响。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号