## 4 Methodology
### Gathering Metadata
\begin{table}
\begin{tabular}{l l l l} \hline \hline
**Ref.** & **Corpus Name (Categories)** & **Repository/Link to Access** & **Size** \\ \hline
[45] & BRAD-Arabic-Dataset (book reviews) & GitHub: [[https://github.com/elnagara/BRAD-Arabic-Dataset/tree/master/data](https://github.com/elnagara/BRAD-Arabic-Dataset/tree/master/data)]([https://github.com/elnagara/BRAD-Arabic-Dataset/tree/master/data](https://github.com/elnagara/BRAD-Arabic-Dataset/tree/master/data)) accessed on & \(\sim\)11.61 GB \\  & & 16 August 2022 & \\ \hline
[46] & Osman Arabic Text Readability (narratives) & SourceForge: [[https://sourceforge.net/projects/osmanreadability/](https://sourceforge.net/projects/osmanreadability/)]([https://sourceforge.net/projects/osmanreadability/](https://sourceforge.net/projects/osmanreadability/)) & \(\sim\)49 MB \\  & accessed on 16 September 2022 & \\ \hline
[47] & CLCL (Arabic, French, and English Wikipedia articles) & SourceForge: [[https://sourceforge.net/projects/crcl/](https://sourceforge.net/projects/crcl/)]([https://sourceforge.net/projects/crcl/](https://sourceforge.net/projects/crcl/)) & \(\sim\)4.4 MB \\  & & accessed on 16 September 2022 & \\ \hline
[48] & Arabic Corpus (Arabic books) & SourceForge: [[https://sourceforge.net/projects/newarabiccorpus/](https://sourceforge.net/projects/newarabiccorpus/)]([https://sourceforge.net/projects/newarabiccorpus/](https://sourceforge.net/projects/newarabiccorpus/)) & \(\sim\)233 MB \\  & & accessed on 16 September 2022 & \\ \hline
[49] & Arabic word corpus (different categories) & SourceForge: [[https://sourceforge.net/projects/arabicwordcorpus/files/](https://sourceforge.net/projects/arabicwordcorpus/files/)]([https://sourceforge.net/projects/arabicwordcorpus/files/](https://sourceforge.net/projects/arabicwordcorpus/files/)) accessed on & \(\sim\)5.4 MB \\  & & 17 September 2022 & \\ \hline
[50] & A Corpus of Arabic Literature (history) & Zenodo: [[https://zenodo.org/record/5772261#.Y2](https://zenodo.org/record/5772261#.Y2) eeoi8 RrqR]([https://zenodo.org/record/5772261#.Y2](https://zenodo.org/record/5772261#.Y2) eeoi8 RrqR) & \(\sim\)190 MB \\  & & accessed on 23 September 2022 & \\ \hline
[51] & OpenITI Corpus (Islamic topics) & GitHub: [[https://github.com/OpenITI/RELEASE/tree/v2019.1.1](https://github.com/OpenITI/RELEASE/tree/v2019.1.1)]([https://github.com/OpenITI/RELEASE/tree/v2019.1.1](https://github.com/OpenITI/RELEASE/tree/v2019.1.1)) accessed on & \(\sim\)2 GB \\  & & 16 August 2022 & \\ \hline
[52] & Arabic learner corpus (education) & Arabic Learner Corpus website: [[https://www.arabiclearnercorpus.com](https://www.arabiclearnercorpus.com)]([https://www.arabiclearnercorpus.com](https://www.arabiclearnercorpus.com)) & \(\sim\)2.3 MB \\  & & accessed on 23 September 2022 & \\ \hline
[53] & [PERSON] corpus (Islamic books) & JARIR at Manouba University: [[http://www.jarir.tn/kunuzcorpus](http://www.jarir.tn/kunuzcorpus)]([http://www.jarir.tn/kunuzcorpus](http://www.jarir.tn/kunuzcorpus)) accessed on & \(\sim\)42 MB \\  & & 23 September 2022 & \\ \hline
[54] & [PERSON] corpus (Arabic song lyrics) & [PERSON]’s web page: [[http://ucrel-web.lancaster.ac.uk/habibi/](http://ucrel-web.lancaster.ac.uk/habibi/)]([http://ucrel-web.lancaster.ac.uk/habibi/](http://ucrel-web.lancaster.ac.uk/habibi/)) & \(\sim\)135 MB \\  & & accessed on 23 September 2022 & \\ \hline
[55] & [PERSON] Books (science, literature, sport, and health) & [PERSON]’s web page: [[https://www.hindawi.org/books/](https://www.hindawi.org/books/)]([https://www.hindawi.org/books/](https://www.hindawi.org/books/)) accessed on & \(\sim\)27 GB \\  & & 28 September 2022 & \\ \hline
[56] & OpenArabic/1300 AH (Islamic topic) & GitHub repository: [[https://github.com/OpenArabic/1300](https://github.com/OpenArabic/1300) AH]([https://github.com/OpenArabic/1300](https://github.com/OpenArabic/1300) AH) & \(\sim\)731 MB \\  & & accessed on 16 August 2022 & \\ \hline
[57] & Corpora-List (classical text) & Corpora-List’s web page: [[http://korpus.uib.no/icame/corpora/2004-2/0064.html](http://korpus.uib.no/icame/corpora/2004-2/0064.html)]([http://korpus.uib.no/icame/corpora/2004-2/0064.html](http://korpus.uib.no/icame/corpora/2004-2/0064.html)) accessed on & \(\sim\)894 MB \\  & & 16 September 2022 & \\ \hline
[58] & AraNPCC (medical) & Internet Archive library: [[https://archive.org/details/AraNPCC](https://archive.org/details/AraNPCC)]([https://archive.org/details/AraNPCC](https://archive.org/details/AraNPCC)) & 21 GB \\  & & accessed on 20 September 2022 & \\ \hline
[59] & OpenITI-proc corpus (Islamic sentences) & Zenodo: [[https://zenodo.org/record/2535593#.Y4](https://zenodo.org/record/2535593#.Y4) NKBi8 RpD2]([https://zenodo.org/record/2535593#.Y4](https://zenodo.org/record/2535593#.Y4) NKBi8 RpD2) & 13 GB \\  & & accessed on 23 September 2022 & \\ \hline
[60] & Corpora Arabic (news crawl) & Leipzig Corpora collection: [[https://wortschatz.uni-leipzig.de/en/download/Arabic](https://wortschatz.uni-leipzig.de/en/download/Arabic)]([https://wortschatz.uni-leipzig.de/en/download/Arabic](https://wortschatz.uni-leipzig.de/en/download/Arabic)) accessed on 23 September 2022 & \\ \hline \hline \end{tabular}  
* Total before/after filtering and preprocessing of the corpus
* Roughly 833 GB of material was collected/112 GB; the corpus was called “AraFast”.  
\end{table}