PeopleofSuperintelligence

Researcher

Kimmo Koskenniemi

Kimmo Koskenniemi is a computational linguist who invented two-level morphology, a finite-state model that lets computers analyze and produce word forms in highly inflected languages such as Finnish. Trained in mathematics, he worked at the University of Helsinki Computing Centre from 1967 to 1980 and presented the two-level model at IJCAI and in his dissertation in 1983. Early adopters such as Lauri Karttunen, Ronald Kaplan and Martin Kay took up the method, which proved useful for Basque and Swahili, and in 1986 he co-founded the language technology company Lingsoft with Fred Karlsson. From 1991 to 2012 he was professor of computational linguistics and language technology at Helsinki, and in 2006 he founded the Northern European Association for Language Technology. He is a professor emeritus at the University of Helsinki and co-edited the 2023 volume Rule-Based Language Technology.

Born
1945
Badges

Years link to their sources.

Timeline

  1. 1945–1980

    Mathematics and the Computing Centre

    He is born in Jyväskylä in 1945 and earns a master's degree in mathematics at the University of Helsinki in 1967. His first computer program calculates the frequency of Neo-Assyrian cuneiform symbols. From 1967 to 1980, he works at the University of Helsinki Computing Centre, rising from mathematician to section manager before taking a research associate post that lets him study computer science and general linguistics.

  2. 1981–1983

    The two-level model

    In 1981, he becomes a senior programmer on an Academy of Finland project led by Fred Karlsson that investigates automatic recognition of Finnish, and Lauri Karttunen invites him to a seminar in Austin attended by Ron Kaplan and Martin Kay. Working with parallel rules, he arrives at the two-level model for morphological analysis. His 1983 IJCAI paper, Two-Level Model for Morphological Analysis, implements the rules as parallel finite state automata that run in both the analyzing and producing directions, for languages as inflected as Finnish, Russian or Sanskrit.

  3. 1983–1984

    A dissertation and a PhD

    His 1983 dissertation, Two-Level Morphology: A General Computational Model for Word-Form Recognition and Production, presents a language-independent program and a full description of Finnish inflectional morphology. He earns a PhD in general linguistics at the University of Helsinki in 1984, with Lauri Karttunen as his opponent and Fred Karlsson as his supervisor.

  4. July 1984

    The COLING 1984 paper

    In July 1984, he presents A General Computational Model for Word-Form Recognition and Production at the joint COLING and ACL meeting in Stanford. Early adopters Lauri Karttunen, Ronald Kaplan and Martin Kay take up his work at the University of Texas at Austin and later at the Xerox Palo Alto Research Center. Linguists soon write two-level descriptions for over a dozen languages, and the finite-state method proves useful for Basque and Swahili.

  5. 1985–1990

    Co-founding Lingsoft

    He is a senior research fellow of the Academy of Finland at the University of Helsinki from 1985 to 1990. In 1986, he and Fred Karlsson found Lingsoft, a company that employs students to build hyphenation algorithms and spell-checkers for Finnish and other languages.

  6. 1988

    Prize for best computing product

    He and Fred Karlsson share the Finnish Information Processing Association prize for best computing product of 1988.

  7. 1991–2012

    Professor of language technology

    He is professor of computational linguistics and language technology at the University of Helsinki from 1991 to 2012, receiving a permanent chair in 1992. He helps launch the nationwide KIT network for teaching language technology in 2001 and founds the Northern European Association for Language Technology (NEALT) in 2006, chairing it until the end of 2009. From 2006, he also promotes Finnish participation in the CLARIN language infrastructure through FIN-CLARIN.

  8. As of October 2026

    Professor emeritus at Helsinki

    In April 2023, he co-edits Rule-Based Language Technology, a NEALT monograph published in Tartu, and contributes the chapter Simplified two-level morphology in practice. He is a professor emeritus in language technology at the University of Helsinki's Department of Languages.

Career

  1. Since 1967University of HelsinkiMathematician, section manager, research associate, Senior research fellow
  2. 2006–2009Northern European Association for Language TechnologyFounder, Chair
  3. From 1986LingsoftCo-founder

Education

  1. 1984University of HelsinkiPhD in general linguistics
  2. 1967University of HelsinkiMaster's degree in mathematics

From the biography.

  1. 11% of AI doctorate holders from 2010 to 2016 founded or led a company or lab by 10 years after graduationIncludes Kimmo Koskenniemi. We estimate how often AI doctorate holders founded or led a company or lab by 10 years after graduation, how waiting times compare between founders and top jobs, and which universities trained the most.
  2. More people shaping AI studied at Massachusetts Institute of Technology than at any other institutionIncludes University of Helsinki. We estimate where the people shaping AI studied and where their careers led. Massachusetts Institute of Technology leads with 467 former students, including 291 recorded doctorates.
  3. The company share of AI researchers’ top papers was 31% in 2020–2024 and 8% in 1970–1974Includes University of Helsinki. We estimate where the people shaping AI worked when their most-cited papers appeared: the company share was 31% in 2020–2024 and 8% in 1970–1974, and Google led all organizations in 2020–2024.
  4. The Massachusetts Institute of Technology trained or employed 44 of the 187 AI major-prize winners, more than any other universityIncludes University of Helsinki. The Massachusetts Institute of Technology trained or employed 44 of the 187 AI major-prize winners, more than any other university. We compare doctorate and 5+ year employment links, career timing and current workplaces for 187 major-prize and 1,111 best-paper winners.

Colleagues

People named in this biography, and people with dated positions at the same organization in the same years.

Sources and credits

Photo: We have no published photo of Kimmo Koskenniemi yet. Send us a free-licensed photo.

  1. Kimmo Koskenniemi - 375 Humanists 375humanistia.helsinki.fi. Checked 20 October 2026.
  2. How did I come to work in the humanities? - 375 Humanists 375humanistia.helsinki.fi. Checked 20 October 2026.
  3. Thesis and the two-level morphological model - 375 Humanists 375humanistia.helsinki.fi. Checked 20 October 2026.
  4. Two-Level Model for Morphological Analysis | ML Anthology mlanthology.org. Checked 20 October 2026.
  5. Two-Level Morphology: A General Computational Model for Word-Form Recognition and Production - University of Helsinki Research Portal researchportal.helsinki.fi. Checked 20 October 2026.
  6. A General Computational Model for Word-Form Recognition and Production - ACL Anthology aclanthology.org. Checked 20 October 2026.
  7. Kimmo Koskenniemi - Wikipedia en.wikipedia.org. Checked 20 October 2026.
  8. The commercial dimension - 375 Humanists 375humanistia.helsinki.fi. Checked 20 October 2026.
  9. No single path - Finnish lessons in the commercialisation of language engineering research sites.ualberta.ca. Checked 20 October 2026.
  10. Fred Karlsson - 375 Humanists 375humanistia.helsinki.fi. Checked 20 October 2026.
  11. Administration, Funding and International Activity - 375 Humanists 375humanistia.helsinki.fi. Checked 20 October 2026.
  12. Kimmo Koskenniemi - University of Helsinki Research Portal researchportal.helsinki.fi. Checked 20 October 2026.