ANN reconstructed EOS using the M(R) data for the SLy4 EOS model (left plot), the APR EOS model (middle plot) and the BSK20 EOS model (right plot) for the uniform NS mass distribution. The presented results were computed for input data consisting of 20 observations with measurement uncertainties equal to σ_M = 0.1 M_⊙, σ_R = 1 km. Dashed lines correspond to exact values obtained by solving the TOV equations.