Using lexicographic parametric programming for identifying efficient units in DEA. - Pekka J. Korhonen; Pyry-Antti Siitari (Comput. Oper. Res., 2007)

A dimensional decomposition approach to identifying efficient units in large-scale DEA models. - Pekka J. Korhonen; Pyry-Antti Siitari (Comput. Oper. Res., 2009)

Semantic Content Filtering with Wikipedia and Ontologies. - Pekka Malo; Pyry-Antti Siitari; Oskar Ahlgren; Jyrki Wallenius; Pekka J. Korhonen (ICDM Workshops, 2010)

Automated query learning with Wikipedia and genetic programming. - Pekka Malo; Pyry-Antti Siitari; Ankur Sinha 001 (Artif. Intell., 2013)