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- [papers.md](https://md.mova.elamur.ai/free/en/docs/treebanks/ar/nyuad/papers/) — Papers: UD_Arabic-NYUAD

# UD_Arabic-NYUAD

Treebank card from UD release 2.18: metadata and texts come from `UD_Arabic-NYUAD/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_Arabic-NYUAD](https://md.mova.elamur.ai/free/en/docs/treebanks/ar/nyuad/papers/); seeds: `seeds/`; converter: `convert.md`.

| Field | Value |
| --- | --- |
| UD name | UD_Arabic-NYUAD |
| Language | Arabic (`ar`) |
| Family | Afro-Asiatic |
| Treebank code | `ar_nyuad` |
| UD page | [universaldependencies.org/treebanks/ar nyuad/index.html](https://universaldependencies.org/treebanks/ar_nyuad/index.html) |
| License | CC BY-SA 4.0 |
| Genres | news |
| Text in data | no |
| Parallel | no |
| In UD since | UD v2.0 |
| Authors | Nizar Habash; Dima Taji |
| Contact | [taji@ufal.mff.cuni.cz](mailto:taji@ufal.mff.cuni.cz) |
| Development | outside the UD repo (elsewhere): fixes go to the source or the converter |

## Annotation layers

| Layer | Origin |
| --- | --- |
| Lemmas | converted from manual |
| UPOS | converted from manual |
| XPOS | manual native |
| Features | converted from manual |
| Relations | converted from manual |

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 | 15 789 | 502 991 | 590 819 | 82 221 | 0 |
| dev | 1 986 | 63 136 | 73 945 | 10 077 | 0 |
| test | 1 963 | 63 168 | 74 125 | 10 273 | 0 |
| **total** | 19 738 | 629 295 | 738 889 | 102 571 | 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

> The NYUAD Arabic UD treebank is based on the Penn Arabic Treebank (PATB), parts 1, 2, and 3, through conversion to CATiB dependency trees.

## Introduction

> The treebank consists of 19,738 sentences (738889 tokens), and its domain is mainly newswire. The annotation is licensed under the terms of CC BY-SA 4.0, and the original PATB can be obtained from the LDC’s official website.
> 
> The morphological and syntactic annotation of the NYUAD Arabic UD treebank is created through automatic conversion of the PATB data.

- [next → UD_Arabic-PADT](https://md.mova.elamur.ai/free/en/docs/treebanks/ar/padt/)
- [↑ back to Arabic (ar) — UD 2.18 treebanks](https://md.mova.elamur.ai/free/en/docs/treebanks/ar/)