John Krogstie (born 23 May 1967) is a Norwegian computer scientist, professor in information systems at the Norwegian University of Science and Technology (NTNU) in Trondheim, Norway, and an expert in the field of enterprise modelling.
John Krogstie received a MSc in 1991 and a PhD in 1995 both in information systems from the Norwegian University of Science and Technology.
[5] The basic idea behind the SEQUAL framework is, that conceptual models can be considered as sets of statements in a language, and therefore can be evaluated in semiotic/linguistic terms.
[7] In the 2002 article "Quality of interactive models"[8] Krogstie & Jørgensen extended the initial framework adding more levels of Stamper’s semiotic ladder.
Krogstie has published around 150 refereed papers in journals, books, and archival proceedings since 1991.