The Ancient Greek and Latin Dependency Treebank

Giuseppe G. A. Celano, Gregory Crane, Bridget Almas & al.

View the Project on GitHub PerseusDL/treebank_data

The Ancient Greek and Latin Dependency Treebank (AGLDT) is the earliest treebank for Ancient Greek and Latin. The project started at Tufts University in 2006 and is currently under development and maintenance at Leipzig University-Tufts University. Data and documentation are made freely available on GitHub. The present webpage is for presentational purposes only. More information about the creation of the data is contained in the subfolders of the GitHub repository. The current release is v. 2.1.

The Ancient Greek Dependency Treebank

The AGDT 2 has been created as a refinement of the AGDT 1. In a new extended annotation scheme, it defines the morphological and syntactic annotations more stringently, and adds a semantic layer built on the categories identified in H. W. Smyth's Grammar. The texts available in the current release (v. 2.1) are the following:

Author Text Loci
Aesop Fables 1.1-1.50
Aeschylus Agamemnon
Septem contra Thebas
Athenaeus The Deipnosophists 12, 13
Diodorus Siculus Bibliotheca Historica 11
Herodotus Historiae 1
Hesiod Theogonia
Operae et dies
Homer Iliad 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Odyssey 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Lysias De caede Eratosthenis
In Alcibiadem 1
In Alcibiadem 2
In Pancleonem
Plato Euthyphro
Plutarch Alcibiades
Polybius Historiae 1
Pseudo Apollodorus Library 1.1.1-1.4.1
Pseudo Homer Hymn to Demeter
Sophocles Ajax
Oedipus Tyrannus
Thucydides Histories 1.1-1.88, 1.89-1.117, 1.118-1.146

The Latin Dependency Treebank

The Latin Dependency Treebank contains texts annotated according to the guidelines v. 1.3. The current release (v. 2.1) contains the following texts:

Author Text Loci
Augustus Res Gestae
Caesar Commentarii de Bello Gallico 2.1-2.3; 2.5; 2.7; 2.9; 2.14-2.18; 2.32-2.33
Cicero In Catilinam 1.1-2.11
Jerome Vulgata
Vergil Aeneid 6, 1-336
Ovid Metamorphoses
Petronius Satyricon 26-78
Phaedrus Fabulae 1-3
Propertius Elegiae 1.1-1.22
Sallust Bellum Catilinae
Suetonius Life of Augustus 1-55
Tacitus Historiae 1.1-1.21


The Ancient Greek and Latin Dependency Treebanks are built from the work of dedicated students and researchers from across the world. Over 200 people have annotated texts; the hard work of those who have contributed their annotations as part of the official treebanks are within the data.

Related technologies

Most texts have been annotated with Arethusa, accessible within the free collaborative platform Perseids (instructions on how to join it here). A local treebanking environment is also provided by Alpheios. The treebank data can be queried online via Structural Search and T√ľndra. It is also possible to automatically compare annotations performed in Arethusa with Dolphin.

Contribute to enlarge the collection!

If you would like to contribute, have a look at the texts already treebanked in order to familiarize yourself with the formalism. You should also read the annotation guidelines (Ancient Greek and/or Latin), which clarify most doubts that may arise. If you want to do some practice by treebanking some sentences, this can be accomplished by joining the Perseids platform for free (instructions on how to do this here). After that, if you enjoy treebanking and would like to annotate a longer text, write to us in advance (contacts), so we can provide you with more instructions.


David Bamman, editor emeritus.


This work is made possible by:

The Andrew W. Mellon Foundation and The Perseids Project; the Alexander von Humboldt-Foundation; the Alpheios Project; and Tufts University.

Foundational support has been provided by:

The National Science Foundation [awards IIS-9817484, BCS-0616521, IIS-0910165]; The National Endowment for the Humanities [awards PR-50013-08, HJ-50013-10, HD-51548-12]; The Andrew W. Mellon Foundation, CyberEdition Project; The Institute of Museum and Library Sciences [award LG-06-11-0326-11]; and Tufts Collaborates.


Data are released under a CC BY-SA 3.0 Licence.


Send questions to (surname of Giuseppe above) at