A set of Wikipedia-derived English-Polish and Polish-English thematic dictionaries available for download under the Creative Commons license of potential use in NLP applications. The dictionaries are based on existing Wikipedia categories, but they have also been manually checked for inappropriately-placed entries.
The following subjects are covered in this batch of dictionaries: American universities, world cities and villages, Polish artists, Polish journalists, Polish scientists, Polish politicians, Polish companies, Polish catastrophes, Polish media, Polish organizations, Polish universities. The dictionaries are stored in the RDF (Resource Description Framework) format, which is a method for conceptual description or modeling of information that allows storage of additional information, in this case the Wikipedia categories to which the individual entries belong. The categories presented do not reflect the exact Wikipedia structure, but rather conceptual relations between the entries.