Applications of Neural Networks in Hadron Physics

The Bayesian approach for the feed-forward neural networks is reviewed. Its potential for usage in hadron physics is discussed. As an example of the application the study of the the two-photon exchange effect is presented. We focus on the model comparison, the estimation of the systematic uncertainties due to the choice of the model, and the over-fitting. As an illustration the predictions of the cross sections ratio $d σ(e^+ p\to e^+ p)/d σ(e^- p\to e^- p)$ are given together with the estimate of the uncertainty due to the parametrization choice.

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