Research Article
Research on Food Security Risk Assessment and Early Warning in China Based on BP Neural Network Model
Table 8
Decision values of discrete early warning index attributes of China’s 2000–2019 food security indicators.
| | C1 | C2 | C3 | C4 | C5 | C6 | C7 | C8 | C9 | C10 | C11 | C12 | C13 |
| | 2000 | 4 | 3 | 4 | 4 | 2 | 2 | 3 | 4 | 4 | 4 | 4 | 4 | 4 | | 2001 | 4 | 3 | 4 | 4 | 2 | 3 | 3 | 4 | 4 | 4 | 3 | 4 | 2 | | 2002 | 4 | 3 | 4 | 4 | 3 | 3 | 3 | 3 | 4 | 3 | 3 | 4 | 2 | | 2003 | 4 | 4 | 4 | 3 | 3 | 4 | 4 | 3 | 4 | 3 | 1 | 3 | 1 | | 2004 | 4 | 3 | 1 | 3 | 4 | 3 | 2 | 1 | 3 | 3 | 2 | 3 | 1 | | 2005 | 4 | 3 | 1 | 3 | 3 | 3 | 3 | 2 | 3 | 3 | 3 | 3 | 1 | | 2006 | 4 | 2 | 2 | 2 | 3 | 2 | 2 | 3 | 3 | 1 | 2 | 2 | 1 | | 2007 | 4 | 2 | 3 | 2 | 3 | 3 | 3 | 2 | 2 | 1 | 2 | 2 | 1 | | 2008 | 4 | 1 | 1 | 2 | 3 | 2 | 1 | 3 | 2 | 1 | 1 | 2 | 1 | | 2009 | 3 | 1 | 3 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | | 2010 | 3 | 1 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | | 2011 | 3 | 1 | 1 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | | 2012 | 3 | 1 | 1 | 1 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | | 2013 | 3 | 1 | 2 | 1 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | | 2014 | 2 | 1 | 3 | 1 | 2 | 2 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | | 2015 | 2 | 1 | 2 | 1 | 1 | 1 | 1 | 3 | 1 | 1 | 1 | 1 | 1 | | 2016 | 2 | 1 | 4 | 2 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | | 2017 | 1 | 1 | 3 | 2 | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | | 2018 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 2 | 1 | 1 | 1 | | 2019 | 2 | 1 | 3 | 1 | 1 | 1 | 1 | 1 | 2 | 3 | 1 | 1 | 1 |
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