The ctrl semantic engine is the first product of the Research and Development group at PRAGMATECH. The main functionality of ctrl’s API is to identify the set of (disambiguated) key topics. In ctrl we have moved from words to concepts, then from simple concepts to topics (which are not phrases, but complex ‘disambiguated’ concepts), and, subsequently, to key topics that represent what a certain document is about.

"ctrl News" demo service is used to illustrate how these topics can then be used to extract lucid summaries of news-like documents and to index and retrieve by topics and concepts as opposed to key words and phrases.