Wiki-scraper

Creates a corpus by downloading all wikipedia pages for a given language. The python library 'Wikipedia API' is used to extract the information for each wiki-page by usage of function wikipediaapi.Wikipedia(language).page(title).text.

Requirements

1. Wikipedia API
2. Numpy

Instructions

1.Download {language}wiki-latest-all-titles-in-ns0.gz (and not {language}wiki-latest-all-titles.gz!) according to the preferred language, e.g.:

• Dutch corpus: download nlwiki-latest-all-titles-in-ns0.gz from https://dumps.wikimedia.org/nlwiki/latest/
• English corpus: download enwiki-latest-all-titles-in-ns0.gz from https://dumps.wikimedia.org/enwiki/latest/

2. Run build_wiki_corpus_by_all_titles.py --titles <file> --output_dir <directory>

Optional arguments:

• --language to initialize the Wikipedia API with (default='nl'). Make sure this is the same language as from where the file is downloaded in step 1.
• --eop_token token appended at the end of each page (default='<|endofpage|>').
• --sleep amount of time in seconds to sleep between each request to Wikipedia API (default=0.05).
• --include_page_title to indicate whether the page title should be included (default=True).

This script produces another file named 'counter.txt' in which it keeps track of the pages it processed.

Split titles into separate files

To distribute the download process of wiki-pages across multiple devices, you can use split_titles.py. For example, if you want each file to hold 500000 titles, run the script as follows:

split_titles.py <*.gz-file> <outputdir> 500000

Utility

In the utility directory some additional python-scripts can be found for pre-processing.

Disclaimer

This script is not perfect. If you find any bugs, please create an issue.