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Figure 7
Average root-mean-square error (squares) and mean absolute error (stars) for the simulated grain presented in Figs. 4[link] and 5[link] as a function of used percentage of measurements. The performance of the Gaussian process regression (red and blue filled lines) is compared with that of the weighted least squares (black dashed lines). The RMSE and MAE were computed from the residual fields and averaged over the six reconstructed strain components to produce a scalar measure per reconstruction. Each point in the plot corresponds to a full 3D strain reconstruction using a random subset of the measured data.

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