Formal Out-of-Sample Blind Test and Model Validation for Model v7

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**Last updated: Version 7.2 — Appendix C (May 31, 2026)**

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**Scientific analysis based on the primary source:** Mildner, S. (2026). *Mildner, S. (2026). Geodynamic Reinterpretation Model for Ptolemy’s Germania Magna: General Model Description, Cartometric Foundations*, (v7.2). EarthArXiv (Preprint). https://doi.org/10.31223/X5KB51
([📥 **Download v7.3-PDF**](https://zenodo.org/records/20474381/files/Geodynamic_Model_Description_for_Ptolemys_Germania_Magna___eartharxiv__7.3.pdf?download=1))

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***Disclaimer***

This article presents a formal quantitative validation of the geodynamic reconstruction model introduced in the companion article. It does not constitute peer-reviewed research. All results are based on the publicly available Ptolemaic gazetteer of v7.1. The Saale-Unstrut Fragment Impact and related impact hypotheses remain working hypotheses not confirmed in the peer-reviewed impact-cratering literature.

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Germania Magna Reinterpretation by Sven Mildner Germania Magna Ptolemy Mildner Model Out-of-Sample Blind Test Out-of-sample RMSE RMSE Model Validation Statistics Elster Cluster Appendix C Residuals Kinematic Block Model Zechstein Décollement Bias Test
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