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three of the 89 values have an error of over a 100%. While the perfromance of this
network is by far the best, the errors are still at the lower end of the scale. The network
ANN 5-7-20 is applied to two subdivisions in Jacksonville and the results are described
in section 7.3. The network, its weights and biases are described in detail in appendix F.
5.4.5. Texture 7 (Sandy Loam)
Figure 5.7 ANN 5-7-20
The sandy loam dataset has 181 records of data. This dataset is missing 76 nitrate
concentration values and four water filled porosity values. Thus only 105 records of data
are useable. The main network in use is ANN 7-7-20 (Figure 5.8). The percent error
ranges from 277.78% – 1.05%. The network is not able to accurately predict the
denitrification rates; however at higher denitrification rates the accuracy of the network
seems adequate.
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