Krisztian Balog, Marek Ciglan, Robert Neumayer, Wei Wei, and Kjetil Nørvåg, from the department's Database group, recently won 1st and 3rd place in the two tracks of the Semantic Search Challenge organized by Yahoo! Labs.
The Semantic Search Challenge competition focuses on the development of technology needed for the next generation of web search engines. Instead of merely returning documents that match keywords, the aim of the next generation of web search engines is to give precise answers to complex queries.
The participating systems had to answer two types of information needs based on a set of structured data (simply put, a billion RDF triples) collected from the Web. One type of information request was the entity search, where each query refers to one particular entity (e.g., "Plymouth police department"). The other type of request was the list search, where queries target a group of entities that match certain criteria (e.g., "presidents depicted on mount Rushmore, who died of shooting").
The NTNU team won 1st place in the list search track, and finished as 3rd in the entity search track. The team had almost double the precision on the list search, compared to the next team.
IDI wish to congratulate the team - well done!