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- [papers.md](https://md.mova.elamur.ai/free/en/docs/treebanks/pt/petrogold/papers/) — Papers: UD_Portuguese-PetroGold

# UD_Portuguese-PetroGold

Treebank card from UD release 2.18: metadata and texts come from `UD_Portuguese-PetroGold/README.md`; size is counted by streaming the `.conllu` files and checked against the release `stats.xml`. Generated by `tools/treebanks build`; do not edit by hand. Papers: [Papers: UD_Portuguese-PetroGold](https://md.mova.elamur.ai/free/en/docs/treebanks/pt/petrogold/papers/); seeds: `seeds/`; converter: `convert.md`.

| Field | Value |
| --- | --- |
| UD name | UD_Portuguese-PetroGold |
| Language | Portuguese (`pt`) |
| Family | IE |
| Treebank code | `pt_petrogold` |
| UD page | [universaldependencies.org/treebanks/pt petrogold/index.html](https://universaldependencies.org/treebanks/pt_petrogold/index.html) |
| License | CC BY-SA 4.0 |
| Genres | academic |
| Text in data | yes |
| Parallel | no |
| In UD since | UD v2.11 |
| Authors | Elvis de Souza; Cláudia Freitas; Aline Silveira; Tatiana Cavalcanti; Maria Clara Castro; Wograine Evelyn |
| Contact | [elvis.desouza99@gmail.com](mailto:elvis.desouza99@gmail.com) |
| Development | here source |

## Annotation layers

| Layer | Origin |
| --- | --- |
| Lemmas | manual native |
| UPOS | manual native |
| XPOS | not available |
| Features | manual native |
| Relations | manual native |

UD scale: *manual native* — annotated by hand directly in UD; *converted from manual* — converted from manual annotation in another scheme; *converted with corrections* — converted and partly corrected by hand; *automatic with corrections* — automatic, with partial manual corrections; *automatic* — automatic; *not available* — the layer is absent.

## Size

| Split | Sentences | Tokens | Words | Multiword tokens | Empty nodes |
| --- | --- | --- | --- | --- | --- |
| train | 7 170 | 184 249 | 198 771 | 14 522 | 0 |
| dev | 737 | 20 631 | 22 211 | 1 580 | 0 |
| test | 1 039 | 27 453 | 29 623 | 2 170 | 0 |
| **total** | 8 946 | 232 333 | 250 605 | 18 272 | 0 |

Tokens are surface tokens (Spanish `vámonos` is one), words are syntactic words (`vamos` + `nos`); multiword tokens are those split into several words; empty nodes are the `N.M` nodes of the enhanced graph.

## Summary

> UD_Portuguese-PetroGold is a fully revised treebank which consists of academic texts from the oil & gas domain in Brazilian Portuguese.

## Introduction

> UD_Portuguese-PetroGold is a fully revised treebank which consists of academic texts from the oil & gas domain in Brazilian Portuguese processed in full: only elements such as summary, abstract, appendices and bibliographic references were excluded, as well as figures, graphs, formulas and tables. The annotation was manually revised from automatic annotation by a team of linguists from PUC-Rio (Brazil).
> 
> The corpus was created as part of the Petrolês Project ([petroles.puc-rio.ai](http://petroles.puc-rio.ai)), a partnership between Petrobras Research and Development Center (CENPES) and Applied Computational Intelligence Lab (PUC-Rio/ICA). Petrolês aims to promote research initiatives related to Natural Language Processing and Computational Linguistics for the Portuguese Language.

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