Research on the Food Security Condition and Food Supply Capacity of Egypt

Table 1

Precision grade table of GM (1, 1) model.

Small error possibility/𝑃	Posteriori error/𝐶	Predict precision grade
>0.95	<0.35	Good
>0.80	<0.5	Qualified
>0.70	<0.65	Approximately qualified
≤0.70	≥0.65	Unqualified