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Advances in Civil Engineering
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2020
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Article
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Tab 4
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Research Article
The Prediction of Metro Shield Construction Cost Based on a Backpropagation Neural Network Improved by Quantum Particle Swarm Optimization
Table 4
Prediction results of different training and testing split ratio.
The training and testing split ratio
90% : 10%
80% : 20%
70% : 30%
Average absolute error
5.278
7.313
12.763
Average relative error (%)
1.10
2.29
3.98