Research Article
PSO-Based ANN for Studying on Carrying Capacity of Iron Ore Resources-Economy-Environment in Southern Shaanxi, China
Table 3
Comparison of historical value and simulated value of iron ore reserves.
| | Year | Real value of iron ore reserves (100 million tons) | Simulated value of iron ore reserves (100 million tons) | Error (%) |
| | 2010 | 4.04 | 4.04 | 0 | | 2011 | 3.87 | 4.01 | 3 | | 2012 | 3.85 | 3.98 | 3 | | 2013 | 3.99 | 3.95 | −1 | | 2014 | 3.98 | 3.85 | −3 | | 2015 | 4.00 | 3.80 | −5 | | 2016 | 3.97 | 3.82 | −4 |
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Data source: Shaanxi mining annual report.
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