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UD_Ancient_Greek-PROIEL is converted from the Ancient Greek data in the PROIEL treebank, and consists of the New Testament plus selections from Herodotus.


The Ancient Greek PROIEL treebank is based on the Ancient Greek data from the PROIEL treebank, which is maintained at the Department of Philosophy, Classics, History of Arts and Ideas at the University of Oslo. The conversion is based on the 20180408 release of the PROIEL treebank available from The original annotators are acknowledged in the files available there. The conversion code is available in the Rubygem proiel-cli,

The treebank contains most of the New Testament plus selections from Herodotus' Histories. The original annotation guidelines are available at


The data have been automatically converted to the UD scheme by Dag Haug. Thanks to all the original annotators!

Data splits

The development data consists Matthew 5, Mark 5, John 5, Luke 5 and 15, Acts 5,6, 9 and 10, Romans 1, Revelation 1 and 2, as as well as the following chapters from Herodotus: 1.10-19, 1.110-119, 5.35-39, 5.110-119, 6.1-9 and 7.90-99. The test data consists of Matthew 6, Mark 6, John 6, Luke 6 and 16, Acts 7-8, Romans 2, Revelation 3-5 and the following chapters from Herodotus: 1.20-29, 1.120-125, 1.130-139, 5.45-49, 5.120-126, 6.11-19 and 7.80-89.


Dag T. T. Haug and Marius L. Jøhndal. 2008. 'Creating a Parallel Treebank of the Old Indo-European Bible Translations'. In Caroline Sporleder and Kiril Ribarov (eds.). Proceedings of the Second Workshop on Language Technology for Cultural Heritage Data (LaTeCH 2008) (2008), pp. 27-34.


V2.0 The treebank was converted to UDv2 and the data splits were changed.

=== Machine-readable metadata (DO NOT REMOVE!) ================================ Data available since: UD v1.2 License: CC BY-NC-SA 3.0 Includes text: yes Genre: bible nonfiction Lemmas: converted from manual UPOS: converted from manual XPOS: manual native Features: converted from manual Relations: converted from manual Contributors: Haug, Dag Contributing: elsewhere Contact: