AthDGC: An Open Diachronic Greek Treebank with Indo-European Parallels
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Computer Science > Computation and Language
arXiv:2606.15510 (cs)
[Submitted on 13 Jun 2026]
Title:AthDGC: An Open Diachronic Greek Treebank with Indo-European Parallels
Authors:Nikolaos Lavidas, Kiki Nikiforidou, Dag Haug, Leonid Kulikov, Vassiliki Geka, Vassileios Symeonidis, Theodoros Michalareas, Sofia Chionidi, Anastasia Tsiropina, Eleni Plakoutsi, Evangelos Argyropoulos
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Abstract:AthDGC ("Athens-PROIEL") is an open, end-to-end workflow and dataset. It is, to the best of our knowledge, the first openly licensed dependency-parsed treebank of Greek that spans eight diachronic periods, namely Archaic, Classical, Koine, Late Antique, Byzantine, Late Byzantine, Early Modern, and Modern Greek, under a single PROIEL XML 2.0 schema, with verse-level cross-alignment of the New Testament to Latin (Vulgate), Gothic (Wulfila), Old Church Slavonic (Marianus), and Classical Armenian. AthDGC builds on the PROIEL Treebank Family (Haug and Johndal 2008; Eckhoff et al. 2018), which established the schema and the Koine-Greek reference set for the project. Annotation uses the Stanford Stanza PROIEL-trained workflow; sentence-level alignment uses LaBSE, a multilingual sentence-embedding model; word-level alignment uses multilingual-BERT attention through the AwesomeAlign procedure. The v0.4 release provides curated samples and the open-source toolkit; the full annotated corpus partitions remain under v0.5 audit on the Greek national HPC. Quantitative scale, per-witness verse counts, and per-period annotated-row counts are reported in the v0.5 release notes, after the audit pass completes. Concept DOI: https://doi.org/10.5281/zenodo.20439182.
| Comments: | 16 pages. Data paper for the v0.4 release of AthDGC. Concept DOI: https://doi.org/10.5281/zenodo.20439182. Companion site: this https URL |
| Subjects: | Computation and Language (cs.CL); Digital Libraries (cs.DL) |
| MSC classes: | primary cs.CL, cross-list cs.DL |
| ACM classes: | I.2.7 |
| Cite as: | arXiv:2606.15510 [cs.CL] |
| (or arXiv:2606.15510v1 [cs.CL] for this version) | |
| https://doi.org/10.48550/arXiv.2606.15510
arXiv-issued DOI via DataCite (pending registration)
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| Related DOI: | https://doi.org/10.5281/zenodo.20439182
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