Publications of Krista Lagus

2007

E. Alhoniemi, A. Honkela, K. Lagus, J. Seppä, P. Wagner, and H. Valpola (2007).

Compact Modeling of Data Using Independent Variable Group Analysis. IEEE Transactions on Neural Networks (2007). Accepted for publication. [ PDF ]

Mathias Creutz and Krista Lagus (2007).

Unsupervised Models for Morpheme Segmentation and Morphology Learning. ACM Transactions on Speech and Language Processing, Volume 4, Issue 1, Article 3, January 2007. [ Publisher's site ]

2006

Mathias Creutz, Krista Lagus, and Sami Virpioja (2006).: Unsupervised Morphology Induction Using Morfessor. In Finite-State Methods and Natural Language Processing, Lecture Notes in Computer Science, Volume 4002, pages 300-301, Springer Berlin / Heidelberg. [ Publisher's site ]
Mathias Creutz and Krista Lagus (2006).: Morfessor in the Morpho Challenge. In the Proceedings of the PASCAL Challenge Workshop on Unsupervised segmentation of words into morphemes, Venice, Italy, April 12. [ PDF ]
Kurimo, Mikko; Creutz, Mathias; Lagus, Krista (eds.): Proceedings of the PASCAL Challenge Workshop on Unsupervised segmentation of words into morphemes. Venice, Italy 2006, PASCAL European Network of Excellence. 63 p. [ PDF ]
Tiina Lindh-Knuutila, Timo Honkela, and Krista Lagus (2006).: Simulating Meaning Negotiation Using Observational Language Games. in P. Vogt, Y. Sugita, E. Tuci, and C. Nehaniv (eds.) Symbol Grounding and Beyond, Proceedings of Third International Workshop on the Emergence and Evolution of Linguistic Communication, Rome, Italy, September 2006. LNAI 4211, pages 168-179. [ PDF ]
Mikaela Klami and Krista Lagus (2006).: Unsupervised word categorization using Self-Organizing Maps and automatically extracted morphs. In Proceedings of the 7th International Conference on Intelligent Data Engineering and Automated Learning (IDEAL), Burgos, Spain, September 2006, LNCS 4224, pages 912-919. [ PDF ]
Lagus, K. and Honkela, T. (2006): Kognitiivinen mallintaminen. Teoksessa Mieli ja aivot. Kognitiivisen neurotieteen oppikirja, H. Hämäläinen, M. Laine, O. Aaltonen ja A. Revonsuo (toim.), Kognitiivisen neurotieteen tutkimuskeskus, Turun yliopisto, ss. 61-70. [ PDF ]

2005

Lagus, K. and Airola, A (2005).: Semantic clustering of verbs - analysis of morphosyntactic contexts using the SOM algorithm. Acquisition and Representation of Word Meaning: Theoretical and computational perspectives, Linguistica Computazionale XXII-XXIII. IEPI, Pisa-Roma, pp. 263-287.
Russell, A., Honkela, T., Lagus, K., and Pöllä, M. (eds.) 2005.: Proceedings of Symposium on Adaptive Models of Knowledge, Language and Cognition (AMKLC'05). Espoo, Finland, June 2005.
Honkela, T., Hynnä, K., Lagus, K. and Särelä, J. (eds.) (2005).: Adaptive and Statistical Approaches in Conceptual Modeling. Espoo, Finland: Helsinki University of Technology, 2005. (Publications in Computer and Information Science, Technical Report A75).
Lagus, K. Alhoniemi, E., Seppä, J., Honkela, A., and Wagner, P. (2005).: Independent Variable Group Analysis in Learning Compact Representations for Data. In Proceedings of the International and Interdisciplinary Conference on Adaptive Knowledge Representation and Reasoning (AKRR'05), Espoo, 15.-17. June 2005. Pages 49-56. [ PDF ] [ PS ]
Creutz, M., and Lagus, K. (2005).: Inducing the Morphological Lexicon of a Natural Language from Unannotated Text. In Proceedings of the International and Interdisciplinary Conference on Adaptive Knowledge Representation and Reasoning (AKRR'05), Espoo, 15.-17. June 2005. Pages 106-113. [ PDF ]
Lagus, K., Creutz, M., and Virpioja, S. (2005): Latent Linguistic Codes for Morphemes using Independent Component Analysis. In A. Cangelosi et al. (eds.), Modeling Language, Cognition and Action, Proceedings of the Ninth Neural Computation and Psychology Workshop, NCPW9, Plymouth, England, 8-10 September, 2004. [ PDF ]
Lagus, K. (2005): Miten hermoverkkomallit selittävät kielen oppimista. Kielen ja kognition suhde. Toim. A.M. Korpijaakko-Huuhka, S. Pekkala and H. Heimo. Puheen ja kielen tutkimuksen yhdistyksen julkaisuja 37, 2005. [ PS ]
Mathias Creutz, Krista Lagus, Krister Lindén, and Sami Virpioja (2005).: Morfessor and Hutmegs: Unsupervised Morpheme Segmentation for Highly-Inflecting and Compounding Languages. In Proceedings of the Second Baltic Conference on Human Language Technologies, pages 107-112, Tallinn, 4 - 5 April. [ PDF ] [ PS ]
Mathias Creutz and Krista Lagus (2005).: Unsupervised Morpheme Segmentation and Morphology Induction from Text Corpora Using Morfessor 1.0. Publications in Computer and Information Science, Report A81, Helsinki University of Technology, March. [ PDF ] [ PS ]
Honkela, T., Hynnä, K., Lagus, K., and Särelä, J. (Eds.) (2005): Adaptive and Statistical Approaches in Conceptual Modeling. Helsinki University of Technology, Publications in Computer and Information Science, Technical Report A75. Espoo, January 2005. [ PS ] [ PDF ]

2004

Creutz, M. and Lagus, K.: Induction of a Simple Morphology for Highly-Inflecting Languages. In Proceedings of the 7th Meeting of the ACL Special Interest Group in Computational Phonology (SIGPHON), pages 43-51, Barcelona, 26 July, 2004.
[ PS ] [ PDF ]
Krista Lagus, Samuel Kaski, and Teuvo Kohonen: Mining massive document collections by the WEBSOM method Information Sciences, Vol 163/1-3, pp. 135-156, 2004.
[ PDF ] [ PS ] doi:10.1016/j.ins.2003.03.017

2003

Timo Honkela, Mikko Kurimo, Krista Lagus, Vuokko Lantz, and Erkki Oja.: Unsupervised Learning in Human-Computer Interfaces. Adjunct Proceedings of Human-Computer Interaction International, Crete, Greece, June 22-27, 2003. pp. 121-122.

2002

Lindén, K. and Lagus, K. (2002).: Word Sense Disambiguation in Document Space. 2002 IEEE Int. Conference on Systems, Man and Cybernetics, Tunisia, October 6-9, 2002. Electronic publication (CD-ROM).
[ PS ] [ PDF ]
Lagus, K., Airola, A. and Creutz, M. (2002).: Data analysis of conceptual similarities of Finnish verbs. In Proceedings of the CogSci 2002, the 24th annual meeting of the Cognitive Science Society, pages 566-571. Fairfax, Virginia, August 7-10, 2002.
[ PS ] [ PDF ]
Creutz, M and Lagus, K. (2002).: Unsupervised discovery of morphemes. In Proceedings of the Workshop on Morphological and Phonological Learning of ACL-02, pages 21-30, Philadelphia, PA, July 11.
[ PS ] [ PDF ] [ in arXiv ]
Lagus, K. and Kuusisto, J. (2002).: Topic identification in natural language dialogues using neural networks. In Proceedings of the 3rd SIGdial Workshop on Discourse and Dialogue, of ACL-02, pages 95-102, Philadelphia, PA, July 11-12, 2002.
Keywords: topic analysis, natural language dialogues, self-organizing map, probabilistic modeling, Finnish language
[ PS ] [ PDF ]
Jokinen, K., Kerminen, A., Kaipainen, M., Jauhiainen, T., Turunen, M., Hakulinen, J., Kuusisto, J., and Lagus, K. (2002).: Adaptive Dialogue Systems - Interaction with Interact. In Proceedings of the 3rd SIGdial Workshop on Discourse and Dialogue of ACL-02, pages 64-73, Philadelphia, PA, July 11-12, 2002.
[ PDF ]
Bingham, E., Kuusisto, J. and Lagus, K. (2002).: ICA and SOM in text document analysis. The 25th ACM SIGIR Conference on Research and Development in Information Retrieval, August 11-15, 2002, Tampere, Finland, pp. 361-362.
[ PS ] [ PDF ]
Lagus, K. and Kurimo, M. (2002).: Language Model Adaptation in Speech Recognition using Document Maps. IEEE Workshop on Neural Networks for Signal Processing (NNSP'02), Martigny, Switzerland, September 4-6, 2002. pp. 627-636.
Keywords: language model adaptation, topical focus, self-organizing map, large vocabulary speech recognition.
[ PS ]
Kurimo, M. and Lagus, K. (2002).: An Efficiently Focusing Large Vocabulary Language Model. International Conference on Artificial Neural Networks (ICANN'02), Madrid, Spain, August 28-30, 2002. pp. 1068-1073.
[ PS ]
Lagus, K. (2002).: Text retrieval using self-organized document maps. Neural Processing Letters. volume 15, number 1, pages 21-29. February 2002.
[ Obtain article from Kluwer Online]
Lagus, K. and Kurimo, M. (2002).: Natural Language Modeling. In Biennial Report 2000 - 2001, Neural Networks Research Center & Laboratory of Computer and Information Science, Helsinki University of Technology, pages 139-144, April 2002.

2001

Lagus, K. (2001).: Studying similarities in term usage with self-organizing maps. Proceedings of NordTerm 2001, 13-16 June, Tuusula, Finland. pp. 34-45.
Lagus, K. and Airola, A (2001).: Analysis of Functional Similarities of Finnish Verbs using the Self-Organizing Map. Proceedings of the ESSLLI'2001, Helsinki, Finland, 2001.
[ PS ]
Siivola, V., Kurimo, K. and Lagus, K. (2001).: Large Vocabulary Statistical Language Modeling for Continuous Speech Recognition in Finnish Proceedings of the 7th European Conference on Speech Technology and Communication, EUROSPEECH 2001, Aalborg, Denmark, 2001.
[PS].
Lagus, K., Alhoniemi, E., Valpola, H (2001): Independent Variable Group Analysis. In Dorffner et al, eds, Proceedings of International Conference on Artificial Neural Networks - ICANN 2001, Vienna, Austria. Pp. 203-210. Springer.
[PS]

2000

Lagus, K. (2000): Text Mining with the WEBSOM. Acta Polytechnica Scandinavica, Mathematics and Computing Series no. 110, Espoo 2000, 54 pp. D.Sc.(Tech) Thesis, Helsinki University of Technology, Finland. Published by the Finnish Academy of Technology. ISBN 951-666-556-X. ISSN 1456-9418. UDC 004.032.26:025.4.03:004.5.
Lagus, K. (2000).: Text retrieval using self-organized document maps. Technical Report A61, Helsinki University of Technology, Laboratory of Computer and Information Science. ISBN 951-22-5145-0.
[PS]
Kohonen, T., Kaski, S., Lagus, K., Salojärvi, J., Honkela, J., Paatero, V., and Saarela, A. (2000): Self organization of a massive text document collection. Transactions on Neural Networks. Special Issue on Neural Networks for Data Mining and Knowledge Discovery, volume 11, number 3, pages 574-585. May 2000. © 2000 IEEE.
[PS] [PDF]

1999

Lagus, K. and Kaski, S. (1999).: Keyword selection method for characterizing text document maps. Proceedings of ICANN99, Ninth International Conference on Artificial Neural Networks volume 1, pages 371-376, IEE, London.
[PS] [PDF]
Kohonen, T., Kaski, S., Lagus, K., Salojärvi, J., Honkela, J., Paatero, V., and Saarela, A. (1999): Self organization of a massive text document collection In Oja, E. and Kaski, S., editors, Kohonen Maps pages 171-182, Elsevier, Amsterdam.
Lagus, K., Honkela, T., Kaski, S., and Kohonen, T. (1999).: WEBSOM for textual data mining. Artificial Intelligence Review. vol. 13, issue 5/6, pages 345-364, December 1999, © 1999 Kluwer Academic Publishers.
[PDF]

1998

Honkela, T., Kaski, S., Kohonen, T., and Lagus, K. (1998).: Self-organizing maps of very large document collections: Justification for the WEBSOM method. In Balderjahn, I., Mathar, R., and Schader, M., editors, Classification, Data Analysis, and Data Highways, pages 245-252. Springer, Berlin.
Honkela, T., Lagus, K., and Kaski, S. (1998).: Self-organizing maps of large document collections. In Deboeck, G. and Kohonen, T., editors, Visual Explorations in Finance with Self-Organizing Maps, pages 168-178. Springer, London.
Kaski, S., Honkela, T., Lagus, K., and Kohonen, T. (1998).: WEBSOM--self-organizing maps of document collections. Neurocomputing, volume 21, pages 101-117.
Kaski, S., Lagus, K., Honkela, T., and Kohonen, T. (1998).: Statistical aspects of the WEBSOM system in organizing document collections. Computing Science and Statistics, 29:281-290. (Scott, D. W., ed.), Interface Foundation of North America, Inc.: Fairfax Station, VA.
Lagus, K. (1998).: Generalizability of the WEBSOM method to document collections of various types. In Proc. of 6th European Congress on Intelligent Techniques & Soft Computing (EUFIT'98), volume 1, pages 210-214, Verlag Mainz, Aachen, Germany.
[PS] [PDF]

1997

Honkela, T., Kaski, S., Lagus, K., and Kohonen, T. (1997).: WEBSOM--self-organizing maps of document collections. In Proceedings of WSOM'97, Workshop on Self-Organizing Maps, Espoo, Finland, June 4-6, pages 310-315. Helsinki University of Technology, Neural Networks Research Centre, Espoo, Finland.
Lagus, K. (1997).: Map of WSOM'97 abstracts--alternative index. In Proceedings of WSOM'97, Workshop on Self-Organizing Maps, Espoo, Finland, June 4-6, pages 368-372. Helsinki University of Technology, Neural Networks Research Centre, Espoo, Finland.
Lagus, K., Suitiala, R. & Honkela, T. (1997): Culture, Conventions and Local Practices. In Hall, P.A.V. & Hudson, R. (editors.), Software Without Frontiers, pages 159-166. Chichester 1997, John Wiley and Sons.
Keywords: globalisation, localisation, software
Karkaletsis, V., Spyroupoulos, C., Vouros, G., Honkela, T., Lagus, K. & Lehtola, A. (1997): Message Generation. In Hall,P.A.V. & Hudson, R., Software Without Frontiers, pages 203-218. Chichester 1997, John Wiley and Sons.
Keywords: natural language generation, morphological generation
Kokkotos, S., Spyroupoulos, C., Honkela, T., Käpylä, T., Lagus, K. & Hall, P (1997).: Languages and Character Sets.
In: Hall, P.A.V. & Hudson, R. (eds.), Software Without Frontiers, pages 135-158. Chichester 1997, John Wiley and Sons.
Keywords: localisation, software

1996

Samuel Kaski and Krista Lagus. (1996): Comparing self-organizing maps. In C. von der Malsburg, W. von Seelen, J. C. Vorbruggen, and B. Sendhoff, editors, Proceedings of ICANN96, International Conference on Artificial Neural Networks, Lecture Notes in Computer Science, vol. 1112, pages 809--814. Springer, Berlin, 1996.
Honkela, T., Kaski, S., Lagus, K., and Kohonen, T. (1996).: Exploration of full-text databases with self-organizing maps. In Proceedings of the ICNN96, International Conference on Neural Networks, volume I, pages 56-61. IEEE Service Center, Piscataway, NJ.
Honkela, T., Kaski, S., Lagus, K., and Kohonen, T. (1996).: Newsgroup exploration with WEBSOM method and browsing interface. Technical Report A32, Helsinki University of Technology, Laboratory of Computer and Information Science, Espoo, Finland.
Honkela, T., Kaski, S., Lagus, K., and Kohonen, T. (1996).: Self-organizing maps of document collections. ALMA, 1(2). Electronic Journal.
Kaski, S., Honkela, T., Lagus, K., and Kohonen, T. (1996).: Creating an order in digital libraries with self-organizing maps. In Proceedings of WCNN'96, World Congress on Neural Networks, September 15-18, San Diego, California, pages 814-817. Lawrence Erlbaum and INNS Press, Mahwah, NJ.
Kohonen, T., Kaski, S., Lagus, K., and Honkela, T. (1996).: Very large two-level SOM for the browsing of newsgroups. In von der Malsburg, C., von Seelen, W., Vorbrüggen, J. C., and Sendhoff, B., editors, Proceedings of ICANN96, International Conference on Artificial Neural Networks, Bochum, Germany, July 16-19, 1996, Lecture Notes in Computer Science, vol. 1112, pages 269-274. Springer, Berlin.
Lagus, K., Honkela, T., Kaski, S., and Kohonen, T. (1996).: Self-organizing maps of document collections: A new approach to interactive exploration. In Simoudis, E., Han, J., and Fayyad, U., editors, Proceedings of the Second International Conference on Knowledge Discovery and Data Mining, pages 238-243. AAAI Press, Menlo Park, California.
[PS]
Lagus, K., Honkela, T., Kaski, S., and Kohonen, T. (1996).: WEBSOM - a status report. In Alander, J., Honkela, T., and Jakobsson, M., editors, Proceedings of STeP'96, Finnish Artificial Intelligence Conference, pages 73-78. Finnish Artificial Intelligence Society, Vaasa, Finland.
Lagus, K., Kaski, S., Honkela, T., and Kohonen, T. (1996): Browsing digital libraries with the aid of self-organizing maps. In Proceedings of the Fifth International World Wide Web Conference WWW5, May 6-10, Paris, France, volume Poster Proceedings, pages 71-79. EPGL.
Lagus, K., Karanta, I., Ylä-Jääski, J. (1996): Paginating the generalized newspaper - a comparison of simulated annealing and a heuristic method In Voigt, H.-M., Ebeling, W., Rechenberg, I., Schwefel, H.-P. (eds.), Parallel Problem Solving from Nature - {PPSN IV}, pages 594-603. Berlin-Heidelberg 1996, Springer Verlag.
[PS]

1995

Spyropoulos, C., Karkaletsis, E., Vouros, G., Honkela, T., Lagus, K. & Lehtola, A. (1995): Investigating On Line Message Generation in Software Applications: The GLOSSASOFT Results. ERCIM workshop on Towards User Interfaces for All: Current Efforts and Future Trends, pages 95-108.Crete, October 30-31, 1995. 1995, ERCIM & ICS-FORTH.
Lagus, K. (1995): Automated pagination of the generalized newspaper using simulated annealing. Master's Thesis at Helsinki University of Technology, Otaniemi, December 1995.

1994

Lagus, K., Laakko, T., Mäntylä, M. (1994): An Incremental Constraint Facility in a Feature Modelling System. In IFIP TC5/WG3 Conference on Feature Modelling and Recognition in Advanced CAD/CAM Systems, pages 161-177. France, May 1994. University of Valenciennes.
Lagus, K., Laakko, T., Mäntylä, M. (1994): Application of Constraint Propagation in Part Family Modelling. In Annals of CIRP, 1994,Vol. 43, nro 1, pages 129-132.
Lagus, K., Laakko, T., Mäntylä, M. (1994): An Incremental Constraint Facility in a Feature Modelling System. Espoo 1994, Helsinki University of Technology, Manuscripts HTKK-TKO-B114. 15 pages.