Matyáš Boháček, Michal Bravanský, Filip Trhlík, Václav Moravec &ndash; Charles University, Prague, Czech Republic; Gymnasium of Johannes Kepler, Prague, Czech Republic; University College London, United Kingdom
Initially, we assembled a collection of almost 94, 000 articles by scraping URLs of 45 Czech news sources obtained from Common Crawl² [²https://commoncrawl.org/]. These sources included mainstream journalistic websites, tabloids, independent news outlets, and websites that are part of the disinformation ecosystem [ 26 ], capturing the full scope of journalistic content in the Czech Republic. [...] We applied multiple filters and balancing mechanisms to mitigate deficiencies caused by inherent flaws in Common Crawl, which reduced the dataset’s size from 94, 000 to 10, 000 items. This way, we also ensured that the data is as representative of the Czech news ecosystem and as diverse as possible.