Research on Stability of Food System Based on AHP and Gray Correlation Analysis
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Even though the world is producing enough food to feed its population, millions of people are still hungry. Since food security was put forward in the 1970s, more and more attention has been paid to it. Countries globally have made positive efforts to ensure food security and achieved certain results. However, food insecurity remains a severe problem in today's world. In order to find the method to solve these problems, we established the index to evaluate the quality of the grain system, that is, the stability of the grain system and built the Stability Index Model (SI). SI contains five dimensions (Di) whose weights are obtained AHP (Analytic Hierarchy Process). SI is a weighted sum of the five dimensions. Secondly, each dimension contains two indexes whose weights are obtained AHP. Di is a weighted sum of the two factors. Then, the gray correlation analysis method was adopted to find the data with the best correlation degree, and the data were used as the values after standardized processing. When we prioritize our food systems, we will prioritize our food systems and judge the advantages and disadvantages of different programs according to SI calculation to get a better optimization and adjustment program. Therefore, our model provides a different view of the problems that exist in the food system.
Analytic hierarchy process, gray correlation analysis method, Stability Index Model