Artificial intelligence based writer identification generates new evidence for the unknown scribes of the Dead Sea Scrolls exemplified by the Great Isaiah Scroll (1QIsaᵃ)
What it is about
Is the Great Isaiah Scroll (54 columns) the work of one scribe or two? The handwriting looks nearly uniform, and palaeographers disagreed. The authors binarise the column images, extract several independent families of handwriting features (letter-shape fragments, directional and curvature statistics), and, without assuming any writer split, project each column into a low-dimensional space: the first and second halves fall into two separate zones. A second analysis looks for a change point along the column series and finds a sharp transition around column 27, where there is also a physical break in the scroll and a change in spelling and morphology. Character heat maps then show which letter forms differ. Conclusion: two main scribes who wrote in closely matched styles.
Ideas
- I1. Change-point test along a text: compute a small vector of linguistic features per chapter or per parasha in the Torah trees (plene vs. defective spelling of ō/ū, long vs. short pronoun forms, the ratio of wayyiqtol to qatal, use of אֲנִי vs. אָנֹכִי), and look for points where the series shifts. A negative control is shuffling the chapters, which should show no change point.
- I2. Agreement over several independent feature sets, as in the paper, before any claim: a split is believed only if spelling-based, morphology-based and syntax-based features each place it at the same spot.
For Mova
Handwriting itself is outside Mova. I1 and I2 are a measurement for 12. Biblical, Mishnaic and Modern Hebrew compared (the dating debate, "with counts book by book"), run over the converted Torah (macula trees, FEATS in 13-mova-tools.md §5); spelling features also bear on 01-script.md (matres lectionis).
Cite
@inproceedings{popovic2020artificial,
title = {{Artificial intelligence based writer identification generates new evidence for the unknown scribes of the Dead Sea Scrolls exemplified by the Great Isaiah Scroll (1QIsaᵃ)}},
author = {Popovic, Mladen and Dhali, Maruf A. and Schomaker, Lambert},
booktitle = {PLoS ONE 2021},
year = {2020},
doi = {10.1371/journal.pone.0249769},
eprint = {2010.14476},
archivePrefix = {arXiv},
url = {https://doi.org/10.1371/journal.pone.0249769}
}References
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