Unsupervised Morphology Induction Using Morfessor. - Mathias Creutz; Krista Lagus; Sami Virpioja (FSMNLP, 2005)

Compact n-gram models by incremental growing and clustering of histories. - Sami Virpioja; Mikko Kurimo (INTERSPEECH, 2006)

Unlimited vocabulary speech recognition with morph language models applied to Finnish. - Teemu Hirsimäki; Mathias Creutz; Vesa Siivola; Mikko Kurimo; Sami Virpioja; Janne Pylkkönen (Comput. Speech Lang., 2006)

Morphology-aware statistical machine translation based on morphs induced in an unsupervised manner. - Sami Virpioja; Jaakko J. Väyrynen; Mathias Creutz; Markus Sadeniemi (MTSummit, 2007)

On Growing and Pruning Kneser-Ney Smoothed N-Gram Models. - Vesa Siivola; Teemu Hirsimäki; Sami Virpioja (IEEE Trans. Speech Audio Process., 2007)

Allomorfessor: Towards Unsupervised Morpheme Analysis. - Oskar Kohonen; Sami Virpioja; Mikaela Klami (CLEF (Working Notes), 2008)

Adaptive Translation: Finding Interlingual Mappings Using Self-Organizing Maps. - Timo Honkela; Sami Virpioja; Jaakko J. Väyrynen (ICANN (1), 2008)

Overview and Results of Morpho Challenge 2009. - Mikko Kurimo; Sami Virpioja; Ville T. Turunen; Graeme W. Blackwood; William Byrne (CLEF (1), 2009)

Unsupervised Morpheme Discovery with Allomorfessor. - Sami Virpioja; Oskar Kohonen (CLEF (Working Notes), 2009)

Unsupervised Morpheme Analysis with Allomorfessor. - Sami Virpioja; Oskar Kohonen; Krista Lagus (CLEF (1), 2009)

Web Augmentation of Language Models for Continuous Speech Recognition of SMS Text Messages. - Mathias Creutz; Sami Virpioja; Anna Kovaleva (EACL, 2009)

Minimum Bayes Risk Combination of Translation Hypotheses from Alternative Morphological Decompositions. - Adrià de Gispert; Sami Virpioja; Mikko Kurimo; William J. Byrne (HLT-NAACL (Short Papers), 2009)

Morpho Challenge - Evaluation of algorithms for unsupervised learning of morphology in various tasks and languages. - Mikko Kurimo; Sami Virpioja; Ville T. Turunen; Teemu Hirsimäki (HLT-NAACL (Demos), 2009)

Language Identification of Short Text Segments with N-gram Models. - Tommi Vatanen; Jaakko J. Väyrynen; Sami Virpioja (LREC, 2010)

Semi-Supervised Learning of Concatenative Morphology. - Oskar Kohonen; Sami Virpioja; Krista Lagus (SIGMORPHON, 2010)

Morpho Challenge 2005-2010: Evaluations and Results. - Mikko Kurimo; Sami Virpioja; Ville T. Turunen; Krista Lagus (SIGMORPHON, 2010)

Applying Morphological Decompositions to Statistical Machine Translation. - Sami Virpioja; Jaakko J. Väyrynen; André Mansikkaniemi; Mikko Kurimo (WMT@ACL, 2010)

Predicting Reaction Times in Word Recognition by Unsupervised Learning of Morphology. - Sami Virpioja; Minna Lehtonen; Annika Hultén; Riitta Salmelin; Krista Lagus (ICANN (1), 2011)

Evaluating the effect of word frequencies in a probabilistic generative model of morphology. - Sami Virpioja; Oskar Kohonen; Krista Lagus (NODALIDA, 2011)

Empirical Comparison of Evaluation Methods for Unsupervised Learning of Morphology. - Sami Virpioja; Ville T. Turunen; Sebastian Spiegler; Oskar Kohonen; Mikko Kurimo (Trait. Autom. des Langues, 2011)

Evaluating vector space models with canonical correlation analysis. - Sami Virpioja; Mari-Sanna Paukkeri; Abhishek Tripathi; Tiina Lindh-Knuutila; Krista Lagus (Nat. Lang. Eng., 2012)

Learning a subword vocabulary based on unigram likelihood. - Matti Varjokallio; Mikko Kurimo; Sami Virpioja (ASRU, 2013)

Supervised Morphological Segmentation in a Low-Resource Learning Setting using Conditional Random Fields. - Teemu Ruokolainen; Oskar Kohonen; Sami Virpioja; Mikko Kurimo (CoNLL, 2013)

Morfessor FlatCat: An HMM-Based Method for Unsupervised and Semi-Supervised Learning of Morphology. - Stig-Arne Grönroos; Sami Virpioja; Peter Smit; Mikko Kurimo (COLING, 2014)

Painless Semi-Supervised Morphological Segmentation using Conditional Random Fields. - Teemu Ruokolainen; Oskar Kohonen; Sami Virpioja; Mikko Kurimo (EACL, 2014)

Morfessor 2.0: Toolkit for statistical morphological segmentation. - Peter Smit; Sami Virpioja; Stig-Arne Grönroos; Mikko Kurimo (EACL, 2014)

Tuning Phrase-Based Segmented Translation for a Morphologically Complex Target Language. - Stig-Arne Grönroos; Sami Virpioja; Mikko Kurimo (WMT@EMNLP, 2015)

LeBLEU: N-gram-based Translation Evaluation Score for Morphologically Complex Languages. - Sami Virpioja; Stig-Arne Grönroos (WMT@EMNLP, 2015)

Class n-Gram Models for Very Large Vocabulary Speech Recognition of Finnish and Estonian. - Matti Varjokallio; Mikko Kurimo; Sami Virpioja (SLSP, 2016)

Hybrid Morphological Segmentation for Phrase-Based Machine Translation. - Stig-Arne Grönroos; Sami Virpioja; Mikko Kurimo (WMT, 2016)

A Comparative Study of Minimally Supervised Morphological Segmentation. - Teemu Ruokolainen; Oskar Kohonen; Kairit Sirts; Stig-Arne Grönroos; Mikko Kurimo; Sami Virpioja (Comput. Linguistics, 2016)

Character-based units for unlimited vocabulary continuous speech recognition. - Peter Smit; Siva Reddy Gangireddy; Seppo Enarvi; Sami Virpioja; Mikko Kurimo (ASRU, 2017)

Aalto system for the 2017 Arabic multi-genre broadcast challenge. - Peter Smit; Siva Reddy Gangireddy; Seppo Enarvi; Sami Virpioja; Mikko Kurimo (ASRU, 2017)

Improved Subword Modeling for WFST-Based Speech Recognition. - Peter Smit; Sami Virpioja; Mikko Kurimo (INTERSPEECH, 2017)

Extending hybrid word-character neural machine translation with multi-task learning of morphological analysis. - Stig-Arne Grönroos; Sami Virpioja; Mikko Kurimo (WMT, 2017)

Automatic Speech Recognition With Very Large Conversational Finnish and Estonian Vocabularies. - Seppo Enarvi; Peter Smit; Sami Virpioja; Mikko Kurimo (IEEE ACM Trans. Audio Speech Lang. Process., 2017)

First-Pass Techniques for Very Large Vocabulary Speech Recognition ff Morphologically Rich Languages. - Matti Varjokallio; Sami Virpioja; Mikko Kurimo (SLT, 2018)

Cognate-aware morphological segmentation for multilingual neural translation. - Stig-Arne Grönroos; Sami Virpioja; Mikko Kurimo (WMT (shared task), 2018)

Using Statistical Models of Morphology in the Search for Optimal Units of Representation in the Human Mental Lexicon. - Sami Virpioja; Minna Lehtonen; Annika Hultén; Henna Kivikari; Riitta Salmelin; Krista Lagus (Cogn. Sci., 2018)

Subword RNNLM Approximations for Out-Of-Vocabulary Keyword Search. - Mittul Singh; Sami Virpioja; Peter Smit; Mikko Kurimo (INTERSPEECH, 2019)

The University of Helsinki Submissions to the WMT19 Similar Language Translation Task. - Yves Scherrer; Raúl Vázquez; Sami Virpioja (WMT (3), 2019)

The University of Helsinki Submissions to the WMT19 News Translation Task. - Aarne Talman; Umut Sulubacak; Raúl Vázquez; Yves Scherrer; Sami Virpioja; Alessandro Raganato; Arvi Hurskainen; Jörg Tiedemann (WMT (2), 2019)

OpusFilter: A Configurable Parallel Corpus Filtering Toolbox. - Mikko Aulamo; Sami Virpioja; Jörg Tiedemann (ACL (demo), 2020)

Controlling the Imprint of Passivization and Negation in Contextualized Representations. - Hande Çelikkanat; Sami Virpioja; Jörg Tiedemann; Marianna Apidianaki (BlackboxNLP@EMNLP, 2020)

FinChat: Corpus and Evaluation Setup for Finnish Chat Conversations on Everyday Topics. - Katri Leino; Juho Leinonen 002; Mittul Singh; Sami Virpioja; Mikko Kurimo (INTERSPEECH, 2020)

OpusTools and Parallel Corpus Diagnostics. - Mikko Aulamo; Umut Sulubacak; Sami Virpioja; Jörg Tiedemann (LREC, 2020)

Morfessor EM+Prune: Improved Subword Segmentation with Expectation Maximization and Pruning. - Stig-Arne Grönroos; Sami Virpioja; Mikko Kurimo (LREC, 2020)

Effects of Language Relatedness for Cross-lingual Transfer Learning in Character-Based Language Models. - Mittul Singh; Peter Smit; Sami Virpioja; Mikko Kurimo (SLTU-CCURL@LREC, 2020)

The University of Helsinki and Aalto University submissions to the WMT 2020 news and low-resource translation tasks. - Yves Scherrer; Stig-Arne Grönroos; Sami Virpioja (WMT@EMNLP, 2020)

Transfer learning and subword sampling for asymmetric-resource one-to-many neural translation. - Stig-Arne Grönroos; Sami Virpioja; Mikko Kurimo (Mach. Transl., 2020)

Boosting Neural Machine Translation from Finnish to Northern Sámi with Rule-Based Backtranslation. - Mikko Aulamo; Sami Virpioja; Yves Scherrer; Jörg Tiedemann (NoDaLiDa, 2021)

Grapheme-Based Cross-Language Forced Alignment: Results with Uralic Languages. - Juho Leinonen 002; Sami Virpioja; Mikko Kurimo (NoDaLiDa, 2021)

Advances in subword-based HMM-DNN speech recognition across languages. - Peter Smit; Sami Virpioja; Mikko Kurimo (Comput. Speech Lang., 2021)

Morphologically motivated word classes for very large vocabulary speech recognition of Finnish and Estonian. - Matti Varjokallio; Sami Virpioja; Mikko Kurimo (Comput. Speech Lang., 2021)

Democratizing Machine Translation with OPUS-MT. - Jörg Tiedemann; Mikko Aulamo; Daria Bakshandaeva; Michele Boggia; Stig-Arne Grönroos; Tommi Nieminen; Alessandro Raganato; Yves Scherrer; Raúl Vázquez; Sami Virpioja (CoRR, 2022)

Unsupervised Feature Selection for Effective Parallel Corpus Filtering. - Mikko Aulamo; Ona de Gibert; Sami Virpioja; Jörg Tiedemann (EAMT, 2023)

Uncertainty-Aware Natural Language Inference with Stochastic Weight Averaging. - Aarne Talman; Hande Çelikkanat; Sami Virpioja; Markus Heinonen; Jörg Tiedemann (NoDaLiDa, 2023)

Democratizing neural machine translation with OPUS-MT. - Jörg Tiedemann; Mikko Aulamo; Daria Bakshandaeva; Michele Boggia; Stig-Arne Grönroos; Tommi Nieminen; Alessandro Raganato; Yves Scherrer; Raúl Vázquez; Sami Virpioja (Lang. Resour. Evaluation, 2024)