Tommi A Pirinen


Postdoctoral Researcher
3rd floor post-doc room?
Phone Number: 
Email Address: 

Research Group: 
Language and Intelligence
Associated Research Centres: 
Centre for Next Generation Localisation (CNGL)
Research Interests: 
  • morphologically complex languages
  • finite-state automata
  • lesser-resourced languages
  • software engineering in computational linguistics
Selected Publications: 


  1. Sjur Moshagen, Tommi A Pirinen, Trond Trosterud (2013a) Building an open-source development infrastructure for language technology projects, in Proceedings of Nodalida 2013 (forthcoming)
  2. Tommi A Pirinen, Sam Hardwick (2012d) Effect of Language and Error Models on Efficiency of Finite-State Spell-Checking and Correction, in Proceedings of 10th International Workshop on Finite-State Methods and/in Natural Language Processing FSMNLP 2012
  3. Krister Lindén, Miikka Silfverberg, Erik Axelson, Senka Drobac, Sam Hardwick, Tommi A Pirinen (to appear, 2012c) Using HFST for creating Computational Linguistic Applications in Computational Linguistics-Applications 2012
  4. Tommi A Pirinen, Francis M. Tyers (2012b) Compiling Apertium morphological dictionaries with HFST and using them in HFST applications in Proceedings of Workshops in Language Resources and Evaluation conference LREC 2012, in saltmil-aflat workshop on “language technology for normalisation of less-resourced languages”
  5. Tommi A Pirinen, Miikka Silfverberg (2012a) Improving Finite-State Spell-Checker Suggestions with Part-of-Speech N-grams in Proceedings of International Conference on Intelligent Text Processing and Computational Linguistics CICLING 2012
  6. Krister Lindén, Miikka Silfverberg, Erik Axelson, Sam Hardwick, Tommi A Pirinen (2011c) HFST—Framework for Compiling and Applying Morphologies in Systems and Frameworks for Computational Morphology 2011, in Communications in Computer and Information Science (100), ISBN: 978-3-642-23138-4
  7. Miikka Silfverberg, Mirka Hyvärinen, Tommi A Pirinen (2011b), Improving Predictive Entry of Finnish Text Messages using IRC Logs in Proceedings of the Computational Linguistics-Applications Conference 2011, ISBN: 978-83-60810-47-7.
  8. Tommi A Pirinen (2011a), Modularisation of Finnish Finite-State Language Description—Towards Wide Collaboration in Open Source Development of Morphological Analyser in Proceedings of Nodalida 2011 (18).
  9. Tommi A Pirinen, Krister Lindén (2010c), Creating and Weighting Hunspell Dictionaries as Finite-State Automata , in Investigationes Linguisticae (19).
  10. Tommi A Pirinen, Krister Lindén (2010b), Building and Using Existing Hunspell Dictionaries and TEX Hyphenators as Finite-State Automata, in Proceedings of International Multiconference in Computer Science and Information Technology
  11. Tommi A Pirinen, Krister Lindén (2010a), Finite-State Spell-Checking with Weighted Language and Error Models, in Proceedings of Workshops of Language Resources and Evaluation Conference 7 in Valletta, Malta.
  12. Krister Lindén, Tommi A Pirinen (2009a), Weighted Finite-State Morphological Analysis of Finnish Compounding with hfst-lexc, in Proceedings of Nodalida 2009 presentation in PDF]
  13. Krister Lindén, Tommi A Pirinen (2009b), Weighting Finite-State Morphological Analyzers using HFST tools , in Pre-proceedings of FSMNLP 2009
  14. Krister Lindén, Miikka Silfverberg, Tommi A Pirinen (2009c), HFST Tools for morphology—An Efficient Open-Source Pacakge for Construction of Morphological Analyzers in Proceedings of Workshop on Systems and Frameworks for Computational Morphology


  1. Tommi Pirinen (2008), Suomen kielen äärellistilainen automaattinen morfologinen analyysi avoimen lähdekoodin menetelmin, [in Finnish] Master's Thesis, University of Helsinki (in Finnish)
  2. Tommi A Pirinen (2014), Weighted Finite-State Methods in Spell-Checking and CorrectionDoctoral dissertation, University of Helsinki