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首页> 外文期刊>American journal of operations research >A Quantitative Factorial Component Analysis to Investigate the Recent Changes of Japan's Weight-Based Food Self-Sufficiency Ratio
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A Quantitative Factorial Component Analysis to Investigate the Recent Changes of Japan's Weight-Based Food Self-Sufficiency Ratio

机译：定量因子分析法研究日本基于体重的食品自给率的近期变化

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摘要

We investigate the weight-based food self-sufficiency ratio (WSSR) for Japan over a 50-year period (1961-2011) by applying factorial component analysis technique in order to measure the changes of the WSSR quantitatively. Quantitative data analysis is employed to determine the drivers of those changes. Numerical results show that Japan experienced a drastic decline in its food self-sufficiency ratio (FSSR) during the above period. The factorial component analysis shows that such a decline was caused by the changes in the FSSR of the food groups/items, not in the quantity of the food supply. A number of characteristics of those changes are presented and a list of major food groups that have major impacts on the changes is constructed. The findings in this paper reiterate the alarming food security problem in Japan and provide clear insight into the causes of this problem. The findings in this study pick up where previous studies have left off, aid the food-related policy-making process and identify new ideas for future food research.
机译：我们通过应用阶乘成分分析技术研究了日本50年间（1961-2011年）的基于体重的食物自给率（WSSR），以便定量测量WSSR的变化。定量数据分析用于确定这些变化的驱动因素。数值结果表明，在此期间，日本的食物自给率（FSSR）急剧下降。析因分析表明，这种下降是由食品组/项目的FSSR的变化而不是食品供应量的变化引起的。介绍了这些变化的许多特征，并构建了对变化有重大影响的主要食物类别的清单。本文的研究结果重申了日本令人担忧的粮食安全问题，并为造成这一问题的原因提供了清晰的见解。这项研究的发现从以前的研究遗漏的地方开始，有助于食品相关的决策过程，并为未来的食品研究确定新的思路。

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