CINTIL-UDep is a dependency bank of Portuguese with 38,400 sentences (and nearly 476,000 tokens), that is treebanked with Universal Dependencies (UD).
This version of CINTIL-UDep supersedes the one included in the v2.11 (2022-11-15) release of the Universal Dependencies (https://universaldependencies.org/) collection of treebanks.

The treebank is described in the following article:

António Branco, João Ricardo Silva, Luís Gomes and João Rodrigues, 2022, "Universal Grammatical Dependencies for Portuguese with CINTIL Data, LX Processing and CLARIN support", In Proceedings, 13th Conference on Language Resources and Evaluation (LREC2022).

which should be used as its canonical citation, and which interested users are referred for detailed information.

The source treebank for CINTIL-UDep dependency bank was CINTIL-DependencyBank (https://hdl.handle.net/21.11129/0000-000B-D31C-8), which was initially manually annotated with different guidelines, as described in:

de Carvalho, R., Querido, A., Campos, M., Pereira, R., Silva, J., and Branco, A. (2016).
CINTIL DependencyBank PREMIUM: A corpus of grammatical dependencies for Portuguese.
In Proceedings of the 10th International Conference on Language Resources and Evaluation (LREC 2016), pages 1552–1557.

Branco, A., Costa, F., Silva, J., Silveira, S., Castro, S., Avelãs, M., Pinto, C., and Graça, J. (2010).
Developing a deep linguistic databank supporting a collection of treebanks: the CINTIL DeepGramBank.
In Proceedings of the 7th International Conference on Language Resources and Evaluation (LREC 2010).

which was converted to Universal Dependencies with handwritten rules, to originate the CINTIL-UDep.

The CINTIL-UDep dependency bank supports its companion LX-UParser, which can be used here: https://portulanclarin.net/workbench/lx-udparser/, and can be obtained here: https://hdl.handle.net/21.11129/0000-000E-8B31-E.

You may also be interested in the following related resources that can also be found in this repository:
CINTIL-UPos (https://hdl.handle.net/21.11129/0000-000E-8B30-F),
CINTIL-USuite (https://hdl.handle.net/21.11129/0000-000F-327D-D),
CINTIL-DependencyBank (https://hdl.handle.net/21.11129/0000-000B-D31C-8),
CINTIL-DependencyBank PREMIUM (https://hdl.handle.net/21.11129/0000-000B-D378-0),
BDCamões DependencyBank - Part I (https://hdl.handle.net/21.11129/0000-000D-F8AA-C),
and BDCamões DependencyBank - Part II - (https://hdl.handle.net/21.11129/0000-000D-F8A8-E).