It is called YAKE! (“Yet Another Keyword Extractor”), a program developed by INESC TEC—Institute for Systems and Computer Engineering, Technology and Science, in Portugal. Its developers claim the tool can be used in texts of any size, written in any language and about any topic. YAKE! uses statistics to understand which words are more relevant in the text, thus not needing input from other corpora of texts to learn what words are more important—like machine learning approaches usually do.