Publications by Tomi Janhunen

2012

80Tomi Janhunen and Vesa Luukkala. Meta programming with answer sets for smart spaces. In Markus Krötzsch and Umberto Straccia, editors, Proceedings of the 6th International Conference on Web Reasoning and Rule Systems, volume 7497 of Lecture Notes in Computer Science, pages 106–121, Vienna, Austria, September 2012. Springer.
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79Guohua Liu, Tomi Janhunen, and Ilkka Niemelä. Answer set programming via mixed integer programming. In Thomas Eiter and Sheila McIlraith, editors, Proceedings of the 13th International Conference on Principles of Knowledge Representation and Reasoning (KR), pages 32–42, Rome, Italy, June 2012. AAAI Press.
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78Tomi Janhunen and Ilkka Niemelä. Applying visible strong equivalence in answer-set program transformations. In Esra Erdem, Joohyung Lee, Yuliya Lierler, and David Pearce, editors, Correct Reasoning – Essays on Logic-Based AI in Honour of Vladimir Lifschitz, volume 7265 of Lecture Notes in Computer Science, pages 363–379, Rome, Italy, June 2012. Springer.
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2011

77Mai Nguyen, Tomi Janhunen, and Ilkka Niemelä. Translating answer-set programs into bit-vector logic. In Salvador Abreu, Johannes Oetsch, Jörg Pührer, Dietmar Seipel, Hans Tompits, Masanobu Umeda, and Armin Wolf, editors, Proceedings of the 19th International Conference on Applications of Declarative Programming and Knowledge Management, pages 105–116, Vienna, Austria, September 2011. TU Wien, INFSYS Research Report 1843-11-06.
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76Rehan Abdul Aziz, Tomi Janhunen, and Vesa Luukkala. Distributed deadlock handling for resource allocation in smart spaces. In Sergey Balandin, Yevgeni Koucheryavy, and Honglin Hu, editors, Proceedings of 4th Conference on Smart Spaces, volume 6869 of Lecture Notes in Computer Science, pages 87–98, St. Petersburg, Russia, August 2011. Springer.
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75Guohua Liu, Randy Goebel, Tomi Janhunen, Ilkka Niemelä, and Jia-Huai You. Strong equivalence of logic programs with abstract constraint atoms. In James Delgrande and Wolfgang Faber, editors, Proceedings of the 11th International Conference on Logic Programming and Nonmonotonic Reasoning, volume 6645 of Lecture Notes in Computer Science, pages 161–173, Vancouver, British Columbia, Canada, May 2011. Springer.
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74Tomi Janhunen, Ilkka Niemelä, Johannes Oetsch, Jörg Pührer, and Hans Tompits. Random vs. structure-based testing of answer-set programs: An experimental comparison. In James Delgrande and Wolfgang Faber, editors, Proceedings of the 11th International Conference on Logic Programming and Nonmonotonic Reasoning, volume 6645 of Lecture Notes in Computer Science, pages 242–247, Vancouver, British Columbia, Canada, May 2011. Springer.
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73Tomi Janhunen and Ilkka Niemelä. Compact translations of non-disjunctive answer set programs to propositional clauses. In Marcello Balduccini and Trao Can Son, editors, Proceedings of the Symposium on Constructive Mathematics and Computer Science in Honour of Michael Gelfonds 65th Anniversary, volume 6565 of Lecture Notes in Computer Science, pages 111–130, Lexington, Kentucky, April 2011. Springer.
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2010

72Tomi Janhunen and Ilkka Niemelä, editors. Logics in Artificial Intelligence – 12th European Conference, JELIA 2010, Helsinki, Finland, September 13-15, 2010. Proceedings, volume 6341 of Lecture Notes in Computer Science. Springer, September 2010.
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71Tomi Janhunen, Ilkka Niemelä, Johannes Oetsch, Jörg Pührer, and Hans Tompits. On testing answer-set programs. In Helder Coelho, Rudi Studer, and Michael Wooldridge, editors, Proceedings of the 19th European Conference on Artificial Intelligence, pages 951–956, Lisbon, Portugal, August 2010. IOS Press.
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70Tomi Janhunen. Modular construction of ground logic programs using LPCAT. In David Mitchell and Eugenia Ternovska, editors, the 3rd International Workshop on Logic and Search, Edinburgh, Scotland, July 2010.
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69Tomi Janhunen. Sampler programs: The semantics of abstract constraint programs revisited. In Manuel Hermenegildo and Torsten Schaub, editors, Technical Communications of the 26th International Conference on Logic Programming, volume 7 of Leibniz International Proceedings in Informatics (LIPIcs), pages 94–103, Dagstuhl, Germany, July 2010. Schloss Dagstuhl–Leibniz-Zentrum fuer Informatik.
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2009

68Tomi Janhunen, Ilkka Niemelä, and Mark Sevalnev. Computing stable models via reductions to difference logic. In Esra Erdem, Fangzhen Lin, and Torsten Schaub, editors, Proceedings of the 10th International Conference on Logic Programming and Nonmonotonic Reasoning, volume 5753 of Lecture Notes in Computer Science, pages 142–154, Potsdam, Germany, September 2009. Springer-Verlag.
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67Matti Järvisalo, Emilia Oikarinen, Tomi Janhunen, and Ilkka Niemelä. A module-based framework for multi-language constraint modeling. In Esra Erdem, Fangzhen Lin, and Torsten Schaub, editors, Proceedings of the 10th International Conference on Logic Programming and Nonmonotonic Reasoning, volume 5753 of Lecture Notes in Computer Science, pages 155–168, Potsdam, Germany, September 2009. Springer-Verlag.
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66Emilia Oikarinen and Tomi Janhunen. A translation-based approach to the verification of modular equivalence. Journal of Logic and Computation, 19(4):591–613, August 2009.
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65Tomi Janhunen, Emilia Oikarinen, Hans Tompits, and Stefan Woltran. Modularity aspects of disjunctive stable models. Journal of Artificial Intelligence Research, 35:813–857, August 2009.
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64Matti Järvisalo, Emilia Oikarinen, Tomi Janhunen, and Ilkka Niemelä. A module-based framework for multi-language constraint modeling. In Workshop on Answer Set Programming and Other Computing Paradigms (ASPOCP 2009), 2009.
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63Tomi Janhunen. lp2diff 1.23 — Translating logic programs into difference logic. http://www.tcs.hut.fi/Software/lp2diff/, 2009. Computer Program.
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2008

62Tomi Janhunen. Removing redundancy from answer set programs. In Enrico Pontelli and Maria Garcia de La Banda, editors, Proceedings of the 24th International Conference on Logic Programming, pages 729–733, Udine, Italy, December 2008. Springer-Verlag. LNCS 5366.
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61Tomi Janhunen, Ilkka Niemelä, and Mark Sevalnev. Computing stable models via reductions to boolean circuits and difference logic. In Marc Denecker, editor, Proceedings of the 2nd International Workshop on Logic and Search, pages 16–30, Leuven, Belgium, November 2008.
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60Emilia Oikarinen and Tomi Janhunen. Achieving compositionality of the stable model semantics for smodels programs. Theory and Practice of Logic Programming, 8(5-6):717–761, November 2008.
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59Emilia Oikarinen and Tomi Janhunen. Implementing prioritized circumscription by computing disjunctive stable models. In Danail Dochev, Marco Pistore, and Paolo Traverso, editors, Proceedings of the 13th International Conference on Artificial Intelligence: Methodology, Systems, Applications, pages 167–180, Varna, Bulgaria, September 2008. Springer-Verlag.
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58Martin Gebser, Tomi Janhunen, Max Ostrowski, Torsten Schaub, and Sven Thiele. A versatile intermediate language for answer set programming. In Maurice Pagnucco and Michael Thielscher, editors, Proceedings of the 12th International Workshop on Nonmonotonic Reasoning, pages 150–159, Sydney, Australia, September 2008. University of New South Wales, School of Computer Science and Engineering, Techical Report, UNSW-CSE-TR-0819.
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57Tomi Janhunen. Modular equivalence in general. In Malik Ghallab, Constantine Spyropoulos, Nikos Fakotakis, and Nikos Avouris, editors, Proceedings of the 18th European Conference on Artificial Intelligence, pages 75–79, Patras, Greece, July 2008. IOS Press.
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2007

56Tomi Janhunen and Emilia Oikarinen. Automated verification of weak equivalence within the smodels system. Theory and Practice of Logic Programming, 7(6):697–744, November 2007.
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55Emilia Oikarinen and Tomi Janhunen. A linear transformation from prioritized circumscription to disjunctive logic programming. In Veronica Dahl and Ilkka Niemelä, editors, Proceedings of the 23rd International Conference on Logic Programming, pages 440–441, Porto, Portugal, September 2007. Springer-Verlag.
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54Emilia Oikarinen and Tomi Janhunen. A translation-based approach to the verification of modular equivalence. In Stefania Costantini and Richard Watson, editors, Proceedings of the 4th International Workshop on Answer Set Programming, pages 255–269, Porto, Portugal, September 2007.
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53Tomi Janhunen, Emilia Oikarinen, Hans Tompits, and Stefan Woltran. Modularity aspects of disjunctive stable models. In Chitta Baral, Gerhard Brewka, and John Schlipf, editors, Proceedings of the 9th International Conference on Logic Programming and Nonmonotonic Reasoning, pages 175–187, Tempe, Arizona, USA, May 2007. Springer-Verlag.
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52Tomi Janhunen. Intermediate languages of ASP systems and tools. In Marina De Vos and Torsten Schaub, editors, Proceedings of the 1st International Workshop on Software Engineering for Answer Set Programming, number CSBU-2007-05 in Deparment of Computer Science, University of Bath, Technical Report Series, pages 12–25, Tempe, Arizona, USA, May 2007.
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51Tomi Janhunen. asptools 1.0 — A tool collection for answer set programming. http://www.tcs.hut.fi/Software/asptools/, 2007. Computer Program.
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50Tomi Janhunen. lpeq 1.19 — A tool for testing the modular equivalence of logic programs. http://www.tcs.hut.fi/Software/lpeq/, 2007. Computer Program.
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2006

49Emilia Oikarinen and Tomi Janhunen. Modular equivalence for normal logic programs. In Gerhard Brewka, Silvia Coradeschi, Anna Perini, and Paolo Traverso, editors, Proceedings of the 17th European Conference on Artificial Intelligence, pages 412–416, Riva del Garda, Italy, August 2006. IOS Press.
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48Jean Gressmann, Tomi Janhunen, Robert Mercer, Torsten Schaub, Sven Thiele, and Richard Tichy. On probing and multi-threading in platypus. In Gerhard Brewka, Silvia Coradeschi, Anna Perini, and Paolo Traverso, editors, Proceedings of the 17th European Conference on Artificial Intelligence, pages 392–396, Riva del Garda, Italy, August 2006. IOS Press.
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47Christian Anger, Martin Gebser, Tomi Janhunen, and Torsten Schaub. What's a head without a body?. In Gerhard Brewka, Silvia Coradeschi, Anna Perini, and Paolo Traverso, editors, Proceedings of the 17th European Conference on Artificial Intelligence, pages 769–770, Riva del Garda, Italy, August 2006. IOS Press.
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46Tomi Janhunen. Some (in)translatability results for normal logic programs and propositional theories. Journal of Applied Non-Classical Logics, 16(1–2):35–86, June 2006. Special issue on implementation of logics.
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45Emilia Oikarinen and Tomi Janhunen. Modular equivalence for normal logic programs. In Jüergen Dix and Anthony Hunter, editors, Proceedings of the 11th International Workshop on Nonmonotonic Reasoning, pages 10–18, Lake District, UK, May 2006. University of Clausthal, Department of Informatics, Technical Report, IfI-06-04.
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44Jean Gressmann, Tomi Janhunen, Robert Mercer, Torsten Schaub, Sven Thiele, and Richard Tichy. On probing and multi-threading in platypus. In Jüergen Dix and Anthony Hunter, editors, Proceedings of the 11th International Workshop on Nonmonotonic Reasoning, pages 30–38, Lake District, UK, May 2006. University of Clausthal, Department of Informatics, Techical Report, IfI-06-04.
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43Tomi Janhunen, Ilkka Niemelä, Dietmar Seipel, Patrik Simons, and Jia-Huai You. Unfolding partiality and disjunctions in stable model semantics. ACM Transactions on Computational Logic, 7(1):1–37, January 2006.
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42Tomi Janhunen. lp2sat 1.10 — A tool for translating normal logic programs into SAT. http://www.tcs.hut.fi/Software/lp2sat/, 2006. Computer Program.
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2005

41Jean Gressmann, Tomi Janhunen, Robert Mercer, Torsten Schaub, Sven Thiele, and Richard Tichy. Platypus: A platform for distributed answer set solving. In Chitta Baral, Gianluigi Greco, Nicola Leone, and Giorgio Terracina, editors, Proceedings of the 8th International Conference on Logic Programming and Nonmonotonic Reasoning, pages 227–239, Diamante, Italy, September 2005. Springer-Verlag.
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40Emilia Oikarinen and Tomi Janhunen. Circ2dlp – translating circumscription into disjunctive logic programming. In Chitta Baral, Gianluigi Greco, Nicola Leone, and Giorgio Terracina, editors, Proceedings of the 8th International Conference on Logic Programming and Nonmonotonic Reasoning, pages 405–409, Diamante, Italy, September 2005. Springer-Verlag.
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2004

39Tomi Janhunen, Toni Jussila, Matti Järvisalo, and Emilia Oikarinen. Teaching Smullyan's analytic tableaux in a scalable learning environment. In Ari Korhonen and Lauri Malmi, editors, Proceedings of the 4th Finnish/Baltic Sea Conference on Computer Science Education, pages 85–94, Joensuu, October 2004. Published in the report series of the Laboratory of Information Processing, TKO-A42/04.
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38Tomi Janhunen and Emilia Oikarinen. Capturing parallel circumscription with disjunctive logic programs. In José Júlio Alferes and Jo ao Leite, editors, Proceedings of the 9th European Conference on Logics in Artificial Intelligence, JELIA'04, pages 134–146, Lisbon, Portugal, September 2004. Springer-Verlag. LNAI 3229.
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37Tomi Janhunen. Representing normal programs with clauses. In Ramon López de Mántaras and Lorenza Saitta, editors, Proceedings of the 16th European Conference on Artificial Intelligence, pages 358–362, Valencia, Spain, August 2004. IOS Press.
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36Emilia Oikarinen and Tomi Janhunen. Verifying the equivalence of logic programs in the disjunctive case. In Vladimir Lifschitz and Ilkka Niemelä, editors, Proceedings of the 7th International Conference on Logic Programming and Nonmonotonic Reasoning, pages 180–193, Fort Lauderdale, Florida, 2004. Springer-Verlag. LNAI 2923.
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35Tomi Janhunen and Ilkka Niemelä. GnT – a solver for disjunctive logic programs. In Vladimir Lifschitz and Ilkka Niemelä, editors, Proceedings of the 7th International Conference on Logic Programming and Nonmonotonic Reasoning, pages 331–335, Fort Lauderdale, Florida, 2004. Springer-Verlag. LNAI 2923.
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34Tomi Janhunen and Emilia Oikarinen. lpeq and dlpeq – translators for automated equivalence testing of logic programs. In Vladimir Lifschitz and Ilkka Niemelä, editors, Proceedings of the 7th International Conference on Logic Programming and Nonmonotonic Reasoning, pages 336–340, Fort Lauderdale, Florida, 2004. Springer-Verlag. LNAI 2923.
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33Tomi Janhunen and Patrik Simons. GnT 2.1 — A tool for computing stable models for disjunctive logic programs. http://www.tcs.hut.fi/Software/gnt/, 2004. Computer Program.
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2003

32Tomi Janhunen. Translatability and intranslatability results for certain classes of logic programs. Series A: Research report 82, Helsinki University of Technology, Laboratory for Theoretical Computer Science, Espoo, Finland, November 2003.
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31Tomi Janhunen. A counter-based approach to translating normal logic programs into sets of clauses. In Marina de Vos and Alessandro Provetti, editors, Answer Set Programming: Advances in Theory and Implementation, pages 166–180, Messina, Sicily, September 2003. CEUR. http://ceur-ws.org/Vol-78/.
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30Tomi Janhunen. Evaluating the effect of semi-normality on the expressiveness of defaults. Artificial Intelligence, 144(1–2):233–250, March 2003.
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29Tomi Janhunen and Patrik Simons. GnT 2 — A tool for computing stable models for disjunctive logic programs. http://www.tcs.hut.fi/Software/gnt/, 2003. Computer Program.
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28Tomi Janhunen, Ilkka Niemelä, Dietmar Seipel, Patrik Simons, and Jia-Huai You. Unfolding partiality and disjunctions in stable model semantics. http://arxiv.org/abs/cs.AI/0303009, 2003. To appear in ACM Transactions on Computational Logic.
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2002

27Tomi Janhunen and Emilia Oikarinen. Testing the equivalence of logic programs under stable model semantics. In Sergio Flesca et al., editors, Logics in Artificial Intelligence, Proceedings of the 8th European Conference, pages 493–504, Cosenza, Italy, September 2002. Springer-Verlag. LNAI 2424.
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26Tomi Janhunen. lpeq 1.13 — A tool for testing the equivalence of logic programs. http://www.tcs.hut.fi/Software/lpeq/, 2002. Computer Program.
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2001

25Tomi Janhunen. On the effect of default negation on the expressiveness of disjunctive rules. In Thomas Eiter, Wolfgang Faber, and Mirek Truszczyński, editors, Logic Programming and Nonmonotonic Reasoning, Proceedings of the 6th International Conference, pages 93–106, Vienna, Austria, September 2001. Springer-Verlag. LNAI 2173.
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24Tomi Janhunen. On the effect of default negation on the expressiveness of disjunctive rules. In Gerhard Brewka, Cees Witteween, and Torsten Schaub, editors, Working Notes of the 5th Dutch-German Workshop on Nonmonotonic Reasoning Techniques and their Applications, pages 102–113, Potsdam, Germany, April 2001.
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2000

23Nisse Husberg, Tomi Janhunen, and Ilkka Niemelä (Eds.). Leksa notes in computer science: Festschrift in honour of professor Leo Ojala. Research Report HUT-TCS-A63, Helsinki University of Technology, Laboratory for Theoretical Computer Science, Espoo, October 2000.
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22Tomi Janhunen. Specifying agent-based systems with nets and logic programs. In Nisse Husberg, Tomi Janhunen, and Ilkka Niemelä, editors, Leksa Notes in Computer Science: Festschrift in Honour of Professor Leo Ojala, pages 33–46, Espoo, October 2000. Helsinki University of Technology, Laboratory for Theoretical Computer Science, Research Reports HUT-TCS-A63.
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21Tomi Janhunen. Capturing stationary and regular extensions with Reiter's extensions. In Manuel Ojeda-Aciego et al., editors, Logics in Artificial Intelligence, European Workshop, JELIA 2000, pages 102–117, Málaga, Spain, September/October 2000. Springer-Verlag. LNAI 1919.
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20Tomi Janhunen. Comparing the expressive powers of some syntactically restricted classes of logic programs. In John Lloyd et al., editors, Computational Logic, First International Conference, pages 852–866, London, UK, July 2000. Springer-Verlag. LNAI 1861.
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19Tomi Janhunen, Ilkka Niemelä, Patrik Simons, and Jia-Huai You. Unfolding partiality and disjunctions in stable model semantics. In Anthony Cohn, Fausto Giunchiglia, and Bart Selman, editors, Principles of Knowledge Representation and Reasoning: Proceedings of the 7th International Conference, pages 411–419, Breckenridge, Colorado, April 2000. Morgan Kaufmann.
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1999

18Tomi Janhunen. Classifying semi-normal default logic on the basis of its expressive power. In Michael Gelfond, Nicola Leone, and Gerald Pfeifer, editors, Proceedings of the 5th International Conference on Logic Programming and Non-Monotonic Reasoning, LPNMR'99, pages 19–33, El Paso, Texas, December 1999. Springer-Verlag. LNAI 1730.
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17Tomi Janhunen. On the intertranslatability of non-monotonic logics. Annals of Mathematics and Artificial Intelligence, 27(1-4):79–128, 1999. Special issue with the selected best papers from JELIA 1998.
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1998

16Tomi Janhunen. On the intertranslatability of autoepistemic, default and priority logics, and parallel circumscription. In Jürgen Dix, Luis Fariñas del Cerro, and Ulrich Furbach, editors, Proceedings of the 6th European Workshop on Logics in Artificial Intelligence, JELIA'98, pages 216–232, Dagstuhl, Germany, October 1998. Springer-Verlag. LNAI 1489.
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15Tomi Janhunen. Non-Monotonic Systems: A Framework for Analyzing Semantics and Structural Properties of Non-Monotonic Reasoning. PhD thesis, Helsinki University of Technology, Department of Computer Science and Engineering, March 1998.
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14Tomi Janhunen. Non-monotonic systems: A framework for analyzing semantics and structural properties of non-monotonic reasoning. Series A: Research report 49, Helsinki University of Technology, Digital Systems Laboratory, Espoo, Finland, March 1998. Doctoral Dissertation.
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1997

13Tomi Janhunen. Separating disbeliefs from beliefs in autoepistemic reasoning. In Jürgen Dix, Ulrich Furbach, and Anil Nerode, editors, Proceedings of the 4th International Conference on Logic Programming and Non-Monotonic Reasoning, LPNMR'97, pages 132–151, Dagstuhl, Germany, July 1997. Springer-Verlag. LNAI 1265.
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1996

12Tomi Janhunen. Representing autoepistemic introspection in terms of default rules. In Wolfgang Wahlster, editor, Proceedings of the 12th European Conference on Artificial Intelligence, ECAI'96, pages 70–74, Budapest, Hungary, August 1996. John Wiley & Sons.
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11Tomi Janhunen. On abstracting decision procedures for non-monotonic reasoning. In Ilkka Niemelä, editor, Proceedings of the ECAI'96 Workshop on Integrating Nonmonotonicity into Automated Reasoning Systems, pages 29–31, August 1996. Universität Koblenz-Landau, Institut für Informatik, Fachberichte Informatik, 18–96.
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1995

10Tomi Janhunen. Cautious models for general logic programs. In Hendrick Decker et al., editors, Proceedings of the Third International Workshop on Deductive Databases and Logic Programming, pages 25–39, Kanagawa, Japan, June 1995. Gesellschaft für Mathematik und Datenverarbeitung. GMD-Studien Nr. 266.
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1994

9Tomi Janhunen. Investigations on Cautious Autoepistemic Reasoning. Licentiate's thesis, Helsinki University of Technology, Department of Computer Science and Engineering, December 1994.
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8Tomi Janhunen. Investigations on cautious autoepistemic reasoning. Series A: Research report 31, Helsinki University of Technology, Digital Systems Laboratory, December 1994. Licentiate's Thesis.
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7Tomi Janhunen. Cautious autoepistemic reasoning applied to general logic programs. In Matti Penttonen, editor, Proceedings of the Seventh Finnish Symposium on Computer Science, pages 33–46, Liperi, Finland, January 1994. University of Joensuu, Department of Computer Science. (Report A-1994-1).
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1993

6Tomi Janhunen and Ilkka Niemelä. A scheme for weakened negative introspection in autoepistemic reasoning. In Georg Gottlob, Alexander Leitsch, and Daniele Mundici, editors, Computational Logic and Proof Theory, Proceedings of the Third Kurt Gödel Colloquium, KGC'93, pages 211–222, Brno, Czech Republic, August 1993. Springer Verlag. LNCS 713.
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5Tomi Janhunen. Weakened negative introspection in autoepistemic reasoning. Series A: Research reports 21, Helsinki University of Technology, Digital Systems Laboratory, February 1993. Master's Thesis.
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4Tomi Janhunen and Marja-Riitta Koivunen. Critic: A user interface analysis and modification tool using an interactor based user interface model. Report TKO-B88, Helsinki University of Technology, Laboratory of Information Processing Science, January 1993.
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3Tomi Janhunen. Weakened negative introspection in autoepistemic reasoning. Master's thesis, Helsinki University of Technology, Department of Computer Science and Engineering, January 1993.
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2Kimmo Varpaaniemi, Johannes Helander, Tomi Janhunen, Ismo Kangas, Kari Nurmela, Kenneth Oksanen, Olavi Pesonen, Marko Rauhamaa, James Reilly, Heikki Suonsivu, Kimmo Valkealahti, Pauli Väisänen, Peter Grönberg, Jaakko Halme, Kari Hiekkanen, Tino Pyssysalo, and Mikko Tiusanen. PROD 1.1 — A Pr/T reachability analysis tool.. http://www.tcs.hut.fi/Software/prod/, 1993. Computer Program.
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1992

1Matti Hallivuori, Tomi Janhunen, and Tapio Suihko. A graphical user interface for a value added network. In Proceedings of the IFIP TC6 International Conference on Information Network and Data Communication, IV, pages 293–307, Espoo, Finland, March 1992. Elsevier Science Publishers B.V.
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