Conjugate gradients for the normal equation
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.. autoclass:: EarlyStopping.ConjugateGradients
.. automethod:: EarlyStopping.ConjugateGradients.iterate
.. automethod:: EarlyStopping.ConjugateGradients.discrepancy_stop
.. automethod:: EarlyStopping.ConjugateGradients.gather_all
.. automethod:: EarlyStopping.ConjugateGradients.calculate_interpolated_residual
.. automethod:: EarlyStopping.ConjugateGradients.calculate_interpolated_strong_empirical_error
.. automethod:: EarlyStopping.ConjugateGradients.calculate_interpolated_weak_empirical_error
.. automethod:: EarlyStopping.ConjugateGradients.calculate_empirical_oracles