The Linguistic Data Consortium (LDC) has developed hundreds of data corpora for natural language processing (NLP) research. Among these are a number of annotated treebank corpora for Arabic. Typically, these corpora consist of a single collection of annotated documents. NLP research, however, usually requires multiple data sets for the purposes of training models, developing techniques, and final evaluation. Therefore it becomes necessary to divide the corpora used into the required data sets (divisions). This document details a set of rules that have been defined to enable consistent divisions for old and new Arabic treebanks (ATB) and related corpora.
@article{arxiv.1309.5652,
title = {LDC Arabic Treebanks and Associated Corpora: Data Divisions Manual},
author = {Mona Diab and Nizar Habash and Owen Rambow and Ryan Roth},
journal= {arXiv preprint arXiv:1309.5652},
year = {2013}
}