Grey prediction model-based food security early warning prediction

An early warning predication for food is proposed in this paper. Quality index is constructed and an improved grey prediction model is also presented. The quality index model is applied to measure the level of food quality. Then the grey prediction model is applied to predict the trend of quality index for food in the future. A comparison between the predicted trends and standard limit proposed by experts is made to judge the food security risk. Some measurements should be taken to prevent harms to people´s health from the risk food according to the result.