Fig. 4 | Scientific Reports

Fig. 4

From: Spatiotemporal graph neural networks for analyzing the influence mechanisms of river hydrodynamics on microplastic transport processes

Fig. 4

Model performance analysis across flow conditions and spatial scales. (a) Prediction accuracy under varying flow regimes showing R² = 0.923 for low-flow and R² = 0.887 for high-flow conditions. (b) Spatial accuracy distribution demonstrating effective upstream-downstream relationship capture with correlation coefficients > 0.85 across all reaches.

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