Publications:

    In Progress

  1. A. Barrón-Cedeño, F. Alam, J.M. Struß, P. Nakov, T. Chakraborty, T. Elsayed, P. Przybyła, T. Caselli, G. Da San Martino, F. Haouari, M. Hasanain, C. Li, J. Piskorski, F. Ruggeri, X. Song, R. Suwaileh
    Overview of the CLEF-2024 CheckThat! Lab: Check-worthiness, subjectivity, persuasion, roles, authorities and adversarial robustness.
    In: Experimental IR Meets Multilinguality, Multimodality, and Interaction. CLEF 2024. Lecture Notes in Computer Science, vol 14959, Springer. [PDF]


  2. J. Piskorski, N. Stefanovitch, F. Alam, R. Campos, D. Dimitrov, A. Jorge, S. Pollak, N. Ribin, Z. Fijavž, M. Hasanain, P. Silvano, E. Sartori, N. Guimarães, A. Zwitter Vitez, A.F. Pacheco, I. Koychev, N. Yu, P. Nakov, G. Da San Martino
    Overview of the CLEF-2024 CheckThat! Lab Task 3 on Persuasion Techniques.
    CEUR Workshop Proceedings: Working Notes of the Conference and Labs of the Evaluation Forum (CLEF 2024). [PDF]

    3. Published

  3. J. Piskorski, M. Marcińczuk, R. Yangarber
    Cross-lingual Named Entity Corpus for Slavic Languages.
    Proceedings of the 2024 Joint International Conference on Computational Linguistics, Language Resources and Evaluation(LREC-COLING 2024), Torino, Italy, 2024. [PDF]


  4. N. Nikolaidis, J. Piskorski, N. Stefanovitch
    Exploring the Usability of Persuasion Techniques for Downstream Misinformation-related Classification Tasks.
    Proceedings of the 2024 Joint International Conference on Computational Linguistics, Language Resources and Evaluation(LREC-COLING 2024), Torino, Italy, 2024. [PDF]


  5. A. Sajwani, A. El Setohy, A. Mekky, D. Turmakhan, L. Hassan, M. El Zeftawy, O. El Herraoui, O. Mohammed Afzal, Q. Liao, T. Mahmoud, Z. Muhammad Mujahid, M. Umar Salman, M. Arslan Manzoor, M. Baali, J. Piskorski, N. Stefanovitch, G. Da San Martino, P. Nakov
    FRAPPE: FRAming, Persuasion, and Propaganda Explorer.
    System demo paper. Proceedings of the 18th Conference of the European Chapter of the Association for Computational Linguistics(EACL 2024), Malta, 2024. [PDF]


  6. N. Stefanovitch, J. Piskorski
    Holistic Inter-Annotator Agreement and Corpus Coherence Estimation in a Large-scale Multilingual Annotation Campaign.
    Proceedings of the 2023 Conference on Empirical Methods in Natural Language Processing (EMNLP 2023), Singapore, 2023. [PDF]


  7. J. Piskorski, N. Stefanovitch, N. Nikolaidis, G. Da San Martino, P. Nakov
    Multilingual Multifaceted Understanding of Online News in Terms of Genre, Framing and Persuasion Techniques.
    Proceedings of the 61st Annual Meeting of the Association for Computational Linguistics (ACL 2023), Toronto, Canada, 2023. [PDF]


  8. J. Piskorski, N. Stefanovitch, G. Da San Martino, P. Nakov
    Semeval-2023 task 3: Detecting the category, the framing, and the persuasion techniques in online news in a multi-lingual setup.
    Proceedings of the 17th International Workshop on Semantic Evaluation, SemEval 2023, Toronto, Canada. Held at ACL 2023, Toronto, Canada, 2023. [PDF]


  9. R. Yangarber, J. Piskorski, A. Dmitrieva, M. Marcińczuk, P. Přibáň, P. Rybak, J. Steinberger
    Slav-NER: the 4th Cross-lingual Challenge on Recognition, Normalization, Classification, and Linking of Named Entities across Slavic languages
    Proceedings of the 9th Biennial Workshop on Slavic Natural Language Processing (SNLP 2023). Held at EACL 2023, Dubrovnik, Croatia, 2023. [PDF]


  10. N. Nikolaidis, N. Stefanovitch, J. Piskorski
    On Experiments of Detecting Persuasion Techniques in Polish and Russian Online News: Preliminary Study
    Proceedings of the 9th Biennial Workshop on Slavic Natural Language Processing (SNLP 2023). Held at EACL 2023, Dubrovnik, Croatia, 2023. [PDF]


  11. J. Piskorski, M. Marcińczuk, P. Nakov, M. Ogrodniczuk, S. Pollak, P. Přibáň, P. Rybak, J. Steinberger, R. Yangarber
    Proceedings of the 9th Workshop on Slavic Natural Language Processing 2023
    (SlavicNLP 2023). Held at EACL 2023, Dubrovnik, Croatia, 2023. [PDF]


  12. J. Piskorski, N. Stefanovitch, B. Doherty, J. Linge, S. Karazi, J. Mantero, G. Jacquet, A. Spadaro, G. Teodori
    Multi-label Infectious Disease News Event Corpus
    Proceedings of the Sixth International Workshop on Narrative Extraction from Texts(Text2Story 2023). Held in conjunction with the 45th European Conference on Information Retrieval (ECIR 2023), Dublin, Ireland, April, 2023. [PDF]


  13. J. Piskorski, N. Stefanovitch, V. Bausier, N. Faggiani, J. Linge, S. Kharazi, N. Nikolaidis, G. Teodori, B. De Longueville, B. Doherty, J. Gonin, C. Ignat, B. Kotseva, E. Mantica, L. Marcaletti, E. Rossi, A. Spadaro, M. Verile, G. Da San Martino, F. Alam, P. Nakov
    News Categorization, Framing and Persuasion Techniques: Annotation Guidelines
    European Commission Joint Research Centre Technical Report, JRC-132862, 2023. [PDF]


  14. J. Piskorski, N. Nikolaidis, N. Stefanovitch, B. Kotseva, I. Vianini, S. Kharazi, J. Linge
    Exploring Data Augmentation for Classification of Climate Change Denial: Preliminary Study
    Proceedings of the Fifth International Workshop on Narrative Extraction from Texts(Text2Story 2022). Held in conjunction with the 44th European Conference on Information Retrieval (ECIR 2022), Stavanger, Norway, April, 2022. [PDF]


  15. N. Stefanovitch, J. Piskorski, S. Kharazi
    Resources and Experiments on Sentiment Classification for Georgian
    Proceedings of (LREC 2022), Marseile, France, 2022. [PDF]


  16. J. Haneczok, G. Jacquet, J. Piskorski, N. Stefanovitch
    Fine-grained Event Classification in News-like Text Snippets - Shared Task 2, CASE 2021
    Proceedings of the 4th Workshop on Challenges and Applications of Automated Extraction of Socio-political Events from Text (CASE 2021). Held at ACL-IJCNLP 2021, Kiev, Ukraine, 2021. [PDF]


  17. A. Hürriyetoğlu, H. Tanev, V. Zavarella, J. Piskorski, R. Yeniterzi, E. Yörük
    Challenges and Applications of Automated Extraction of Socio-political Events from Text (CASE 2021): Workshop and Shared Task Report
    Proceedings of the 4th Workshop on Challenges and Applications of Automated Extraction of Socio-political Events from Text (CASE 2021). Held at ACL-IJCNLP 2021, Kiev, Ukraine, 2021. [PDF]


  18. J. Piskorski, Fredi Šarić, Vanni Zavarella, M. Atkinson
    Exploring Machine-Learning Techniques for Linking Event Templates
    Book chapter in Computational Analysis of Storylines: Making Sense of Events, T. Caselli, E. Hovy, M. Palmer, P. Vossen (editors), Cambridge University Press, 2021. [PDF]


  19. J. Piskorski, B. Babych, Z. Kancheva, O. Kanishcheva, M. Lebedeva, M. Marcińczuk, P. Nakov, P. Osenova, L. Pivovarova, S. Pollak, P. Pribáň, I. Radev, M. Robnik-Šikonja, V. Starko, J. Steinberger, R. Yangarber
    Slav-NER: the 3rd Cross-lingual Challenge on Recognition, Normalization, Classification, and Linking of Named Entities across Slavic languages
    Proceedings of the 8th Biennial Workshop on Balto-Slavic Natural Language Processing (BSNLP 2021). Held at EACL 2021, Kiev, Ukraine, 2021. [PDF]


  20. J. Piskorski, N. Stefanovitch, G. Jacquet, A. Podavini
    Exploring Linguistically-Lightweight Keyword Extraction Techniques for Indexing News Articles in a Multilingual Set-up
    Proceedings of the EACL Hackashop on News Media Content Analysis and Automated Report Generation (EACL Hackashop 2021). Held at EACL 2021, Kiev, Ukraine, 2021. [PDF]


  21. B. Babych, O. Kanishcheva, P. Nakov, J. Piskorski, L. Pivovarova, V. Starko, J. Steinberger, R. Yangarber, M. Marcińczuk, S. Pollak, P. Pribáň, M. Robnik-Šikonja
    Proceedings of the 8th Workshop on Balto-Slavic Natural Language Processing (
    BSNLP 2021). Held at EACL 2021, Kiev, Ukraine, 2021. [PDF]


  22. J. Piskorski, J. Haneczok, G. Jacquet
    New Benchmark Corpus and Models for Fine-grained Event Classification: To BERT or not to BERT?
    Proceedings of the 28th International Conference on Computational Linguistics (COLING 2020), Barcelona, Spain, 2020. [PDF]


  23. V. Zavarella, J. Piskorski, C. Ignat, H. Tanev, M. Atkinson
    Mastering the Media Hype: Methods for Deduplication of Conflict Events from News Report.
    Proceedings of the Artificial Intelligence for Narratives (AI4Narratives) Workshop held in conjunction with the 29th International Joint Conference on Artificial Intelligence (IJCAI 2020), 2020.


  24. J. Haneczok, J. Piskorski
    Shallow and Deep Learning for Event Relatedness Classification.
    Journal article in Information Processing and Management, Volume 57, Issue 6, 2020. [PDF]


  25. J. Piskorski, G. Jacquet
    TF-IDF Character n-grams versus Word Embedding-based Models for Fine-grained Event Classification: A Preliminary study
    Proceedings of the Workshop on Automated Extraction of Socio-political Events from News (AESPEN 2020).
    co-located with LREC 2020, Marseille, France, 2020. [PDF]


  26. J. Piskorski, V. Zavarella, M. Atkinson, M. Verile
    Timelines: Entity-centric Event Extraction from Online News
    Proceedings of the Third International Workshop on Narrative Extraction from Texts (Text2Story 2020).
    held in conjunction with the 42nd European Conference on Information Retrieval (ECIR 2020), Lisbon, Portugal, 14 April, 2020. [PDF]


  27. H. Tanev, V. Zavarella, M. Atkinson, J. Piskorski
    The Nexus Event Detection System at COPE 2019.
    Proceedings of the Workshop on Challenges and Opportunities in Automated Coding of COntentious Political Events (Cope 2019).
    Zurich, Switzerland, September 2, 2019.


  28. J. Piskorski, L. Laskova, M. Marcińczuk, L. Pivovarova, P. Přibáň, J. Steinberger, R. Yangarber
    The Second Cross-Lingual Challenge on Recognition, Classification, Lemmatization, and Linking of Named Entities across Slavic Languages.
    Proceedings of the 7th Biennial Workshop on Balto-Slavic Natural Language Processing (BSNLP 2019).
    Held at ACL 2019, Florence, Italy, 2 August 2019. [PDF]


  29. G. Jacquet, J. Piskorski, R. Steinberger, H. Tanev
    JRC TMA-CC: Slavic Named Entity Recognition and Linking. Participation in the BSNLP-2019 shared task.
    Proceedings of the 7th Biennial Workshop on Balto-Slavic Natural Language Processing (BSNLP 2019).
    Held at ACL 2019, Florence, Italy, 2 August 2019. [PDF]


  30. T. Erjavec, M. Marcińczuk, P. Nakov, J. Piskorski, L. Pivovarova, J. Šnajder, J. Steinberger, R. Yangarber
    Proceedings of the 7th Biennial Workshop on Balto-Slavic Natural Language Processing (BSNLP 2019).
    Held at ACL 2019, Florence, Italy, 2 August 2019. [PDF]


  31. G. Jacquet, J. Piskorski, S. Chesney
    Out-of-context Fine-grained Entity Classification.
    In Proceedings of of the 34th ACM/SIGAPP Symposium On Applied Computing, Limassol, Cyprus, 8-12 April 2019. [PDF]


  32. M. Gariup, J. Piskorski
    The challenge of detecting false documents at the border: Exploring the performance of humans, machines and their interaction.
    In the International Journal of Critical Infrastructure Protection, (IJCIP), Volume 24, March 2019, Pages 100-110, Elsevier. [ONLINE]


  33. J. Piskorski, Fredi Šarić, Vanni Zavarella, M. Atkinson
    On Training Classifiers for Linking Event Templates.
    In Proceedings of the Workshop on Events and Stories in the News 2018. Held at COLING 2018, Santa Fe, New Mexico, USA, 20-26 August 2018. [PDF]


  34. J. Piskorski, V. Zavarella
    On the Development of Entity-centric Timeline Extraction Tool.
    In Proceedings of the International Symposium on Foundations of Open Source Intelligence and Security Informatics (FOSINT-SI 2018). Held in conjunction with ASONAM 2018, Barcelona, Spain, 28-31 August 2018.


  35. G. Jacquet, M. Ehrmann, J. Piskorski, H. Tanev, R. Steinberger.
    Cross-lingual Linking of Multi-word Entities and language-dependent learning of Multi-word Entity Patterns.
    Book chapter in Y. Parmentier, J. Waszczuk (eds.), Representation and Parsing of Multiword Expressions. Language Sciences Press, Berlin, Germany, 2018.


  36. M. Atkinson, J. Piskorski, H. Tanev, V. Zavarella
    On the Creation of Security-related Event Corpus.
    In Proceedings of the Workshop on Events and Stories in the News 2017. Held at ACL 2017, Vancouver, Canada, 30 July - 4 August 4, 2017. [PDF]


  37. J. Piskorski, L. Pivovarova, J. Šnajder, J. Steinberger, R. Yangarber.
    The First Cross-Lingual Challenge on Recognition, Normalization and Matching of Named Entities in Slavic Languages.
    In Proceedings of the 6-th Biennial Workshop on Balto-Slavic Natural Language Processing (BSNLP 2017). Held at EACL 2017, Valencia, Spain, 4 April 2017. [PDF]


  38. S. Chesney, G. Jacquet, R. Steinberger, J. Piskorski.
    Multi-word Entity Classification in a Highly Multilingual Environment.
    In Proceedings of the 13-th Workshop on Multiword Expressions (MWE 2017). Held at EACL 2017, Valencia, Spain, 4 April 2017. [PDF]


  39. T. Erjavec, J. Piskorski, L. Pivovarova, J. Šnajder, J. Steinberger, R. Yangarber.
    Proceedings of the 6-th Biennial Workshop on Balto-Slavic Natural Language Processing (BSNLP 2017). Held at EACL 2017, Valencia, Spain, 4 April 2017. [PDF]


  40. J. Piskorski, L. Pivovarova, H. Tanev, J. Šnajder, R. Yangarber.
    Proceedings of the 5-th Biennial Workshop on Balto-Slavic Natural Language Processing (BSNLP 2015). Held at RANLP 2015, Hissar, Bulgaria, 10-11 September 2015. [PDF]


  41. J. Piskorski.
    Open Relation Extraction for Polish: Preliminary Experiments.
    In Proceedings of the 5-th Biennial Workshop on Balto-Slavic Natural Language Processing (BSNLP 2015). Held at RANLP 2015, Hissar, Bulgaria, 10-11 September 2015. [PDF]


  42. J. Piskorski, L. Pivovarova, H. Tanev, R. Yangarber.
    Proceedings of the 4-th Biennial Workshop on Balto-Slavic Natural Language Processing (BSNLP 2013). Held at ACL 2013, Sofia, Bulgaria, 8-9 August 2013. [PDF]


  43. J. Piskorski, M. Ehrmann.
    On Named Entity Recognition in Targeted Twitter Streams in Polish.
    In Proceedings of the ACL Workshop on Balto-Slavic Natural Language Processing 2013 (BSNLP 2013). Held at ACL 2013. Sofia, Bulgaria, 8-9 August 2013. [PDF]


  44. J. Piskorski, H. Tanev, A. Balahur.
    Exploiting Twitter for Border Security-Related Intelligence Gathering.
    In IEEE Proceedings of the European Intelligence and Security Informatics Conference (EISIC 2013), Uppsala, Sweden, 2013. [PDF]


  45. M. Atkinson, J. Piskorski, H. Tanev, R. Yangarber, V. Zavarella.
    Techniques for Multilingual Security-related Event Extraction from Online News.
    Book chapter in A. Przepiorkowski, M. Piasecki, K. Jassem, P. Fuglewicz (editors) Computational Linguistics Applications. Springer Berlin Heidelberg, ISBN 978-3-642-34398-8, Studies in Computational Intelligence, Volume 458, 2013. [PDF]


  46. T. Poibeau, H. Saggion, J. Piskorski, R. Yangarber (editors).
    Multi-source, Multilingual Information Extraction and Summarization.
    Book by Springer, Berlin & New York, 2012. Volume in the Series: Theory and Applications of Natural Language Processing, Springer Verlag, ISBN 978-3-642-28568-4, 2013.


  47. J. Piskorski, R. Yangarber.
    Information Extraction: Past, Present and Future.
    Book chapter in T. Poibeau, H. Saggion, J. Piskorski, R. Yangarber (editors) Multi-source, Multilingual Information Extraction and Summarization. Springer, Berlin & New York, 2013. [PDF]


  48. V. Zavarella, J. Piskorski, A. Esteves, S. Bucci.
    Refining Border Security News Event Geotagging through Deployment of Lexico-Semantic Patterns.
    In IEEE Proceedings of the European Intelligence and Security Informatics Conference (EISIC 2012) Odense, Denmark, 2012. [PDF]


  49. G. Ameyugo, M. Art, A. Esteves, J. Piskorski.
    Creation of an EU-level Information Exchange Network in the Domain of Borer Security.
    In IEEE Proceedings of the European Intelligence and Security Informatics Conference (EISIC 2012) Odense, Denmark, 2012. [PDF]


  50. H. Tanev, M. Ehrmann, J. Piskorski, V. Zavarella.
    Enhancing Event Descriptions through Twitter Mining.
    In Proceedings of the 6th International AAAI Conference on Weblogs and Social Media , Dublin, Ireland, 2012. [PDF]


  51. A. Savary, J. Piskorski.
    Language Resources for Named Entity Annotation in the National Corpus of Polish.
    In Controls and Cybernetics Journal, Volume 40, No. 2, pages: 361-391, 2012, Systems Research Institute, Polish Academy of Sciences, Warsaw, Poland.


  52. J. Piskorski, J. Belayeva, M. Atkinson.
    On Refining Real-time News Event Extraction through Deployment of Cross-lingual Information Fusion Techniques.
    In Proceedings of the European Intelligence and Security Informatics Conference (EISIC 2011) Athens, Grees, 2011. [PDF]


  53. M. Atkinson, J. Piskorski.
    Frontex Real-time News Event Extraction Framework.
    In Proceedings of 17th Conference on Knowledge Discovery and Data Mining (KDD 2011) San Diego, USA, ACM, 2011. [PDF]


  54. J. Piskorski, H. Tanev, M. Atkinson, E. van der Goot, V. Zavarella.
    Online News Event Extraction for Global Crisis Surveillance.
    In Transactions on Computational Collective Intelligence, Volume 5, Lecture Notes in Computer Science, 6910, pages: 182-212, 2011.[PDF].


  55. J. Piskorski, J. Belayeva, M. Atkinson.
    Exploring the Usefulness of Cross-lingual Information Fusion for Refining Real-time News Event Extraction: A Preliminary Study.
    In Proceedings of the International Conference Recent Advances in Natural Language Processing (RANLP 2011) Hissar, Bulgaria, 2011. [PDF]


  56. M. Atkinson, J. Piskorski, E. van der Goot, R. Yangarber.
    Multilingual Real-Time Event Extraction for Border Security Intelligence Gathering.
    Book chapter in U. Kock Wiil (editor): Counterterrorism and Open Source Intelligence. Series: Springer Lecture Notes in Social Networks, Vol. 2, 2011, ISBN: 978-3-7091-0387-6. [PDF]


  57. J. Daciuk, J. Piskorski, S. Ristov.
    NLP Dictionaries Implemented as Finite-State Automata.
    Book chapter in Carlos Martín-Vide (editor) Mathematics, Computing, Language, and Life: Frontiers in Mathematical Linguistics and Language Theory - Vol. 2 SCIENTIFIC APPLICATIONS OF LANGUAGE METHODS, London : World Scientific & Imperial College Press, pages: 133–204, 2010.


  58. A. Savary, J. Piskorski.
    Lexicons and Grammars for Named Entity Annotation in the National Corpus of Polish.
    In Proceedings of the 18th International Conference Intelligent Information Systems (IIS 2010), Siedlce, 2010, Poland. [PDF]


  59. J. Piskorski, M. Atkinson, J. Belyaeva, V. Zavarella, S. Huttunen, R. Yangarber.
    Real-Time Text Mining in Multilingual News for the Creation of a Pre-frontier Intelligence Picture.
    In Proceedings of 16th Conference on Knowledge Discovery and Data Mining (KDD 2010) ACM SIGKDD Workshop on Intelligence and Security Informatics, Washington, DC, USA, 2010. [PDF]


  60. M. Atkinson, J. Belayeva, V. Zavarella, J. Piskorski, S. Huttunen, A. Vihavainen, R. Yangarber.
    News Mining for Border Security Intelligence.
    In Proceedings of IEEE International Conference on Intelligence and Security Informatics (ISI 2010), Vancouver, British Coulmbia, Canada, 2010.


  61. V. Zavarella, H. Tanev, J. Linge, J. Piskorski, M. Atkinson, R. Steinberger.
    Exploiting Multilingual Grammars and Machine Learning Techniques to Build an Event Extraction System for Portuguese.
    In Proceedings of the International Conference on Computational Processing of Portuguese Language (PROPOR 2010), Porto Alegre, Brazil, 27–30 April 2010. Springer Lecture Notes for Artificial Intelligence, Vol. 6001, pages: 21–24, 2010. [PDF]


  62. I. Budiscak, J. Piskorski, S. Ristov.
    Compressing Gazetteers Revisited.
    In B. Watson, D. Kourie, L. Cleophas, P. Rautenbach (editors) Pre-proceedings of the Eighth International Workshop on Finite-State Methods and Natural Language Processing 2009 (FSMNLP 2009) workshop, Pretoria, South Africa, University of Pretoria, 2009.


  63. H. Tanev, V. Zavarella, J. Linge, M. Kabadjov, J. Piskorski, M. Atkinson, R. Steinberger.
    Exploiting Machine Learning Techniques to Build an Event Extraction System for Portuguese and Spanish.
    In Linguamatica Journal: Vol.1, No.2, pages: 55-66, 2009. [PDF]


  64. M. Atkinson, J. Piskorski, H. Tanev, E. van der Goot, R. Yangarber, V. Zavarella.
    Automated Event Extraction in the Domain of Border Security.
    In Proceedings of MINUCS 2009: Mining User-Generated Content for Security at the UCMedia-2009: ICST 1st Conference on User-Centric Media (2009) Venice, Italy. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, 2010, Volume 40 , pages: 321-326. [PDF]


  65. J. Piskorski, B. Watson, A. Yli–Jyrä (editors).
    Post-proceedings of the Workshop on Finite-State Methods and Natural Language Processing 2008 (FSMNLP 2008).
    Book in the bookseries ‘Frontiers in Artificial Intelligence and Applications’, Volume 191 , IOS Press, Amsterdam, The Netherlands, 2009.


  66. J. Piskorski, K. Wieloch, M. Sydow.
    On Knowledge-Knowledge-poor Methods for Person Name Matching and Lemmatization for Highly Inflectional Languages.
    In F. Lazarinis, J. Vilares, J. Tait, E. N. Efthimiadis (editors) Journal of Information Retrieval, Special Issue on non-English Web Retrieval, Volume 12, No. 3, pages 275–299, Kluwer Academic Publishers, Hingham, MA, USA, 2009. [PDF]


  67. J. Piskorski.
    Exploring Curvature-based Topic Development Analysis for Detecting Event Reporting Boundaries.
    Book chapter in M. Marciniak, A. Mykowiecka (editors) Aspects of Natural Language Processing, Springer Lecture Notes in Computer Science, Vol. 5070, pages 311-331, 2009. [PDF]


  68. J. Piskorski, M. Sydow, K. Wieloch.
    Comparison of String Distance Metrics for Lemmatisation of Named Entities in Polish.
    In Z. Vetulani, H. Uszkoreit (editors): Selected and Extended Papers from the 3rd Language & Technology Conference (LTC 2007) – Responding to Information Society Challenges: New Advances in Human Language Technologies, Poznan, Poland. Lecture Notes in Artificial Intelligence, Vol. 5603, Springer, 2009. [PDF]


  69. D. Perrotta, J. Piskorski, F. Soulié-Fogelman, R Steinberger (editors).
    Mining Massive Data Sets for Security - Advances in Data Mining, Search, Social Networks and Text Mining, and their Applications to Security.
    Volume 19 of the NATO Science for Peace and Security Series, IOS Press, Amsterdam, The Netherlands. [PDF]


  70. M.Sydow, J.Piskorski, D.Weiss, C.Castillo.
    Fighting Web Spam.
    Book chapter in: D. Perrotta, J. Piskorski, F. Soulié-Fogelman, R Steinberger (editors) Mining Massive Data Sets for Security, Volume 19 of the NATO Science for Peace and Security Series, IOS Press, Amsterdam, The Netherlands. [PDF]


  71. J. Piskorski, H. Tanev, M. Atkinson, E. van der Goot.
    Cluster-Centric Approach to News Event Extraction.
    In Proceedings of the 6th International Conference on Multimedia & Network Information Systems (MISSI 2008), Wrocław, Poland, 18–19 September, 2008. Publication by IOS Press, The Netherlands. [PDF]


  72. V. Zavarella, H. Tanev, J. Piskorski.
    Event Extraction for Italian Using Cascaded Finite-State Grammars.
    In Proceedings of the International Workshop on Finite-State Methods and Natural Language Processing 2008 (FSMNLP 2008), Ispra, Italy, 11–12 September, 2008. [PDF]


  73. M. Atkinson, J. Piskorski, B. Pouliquen, R. Steinberger, H. Tanev, V. Zavarella.
    Online-Monitoring of Security-Related Events.
    In Proceedings of the 22nd International Conference on Computational Linguistics (COLING 2008), Manchester, UK, 18–22 August 2008. [PDF]


  74. J. Piskorski.
    Corleone - Core Linguistic Entity Online Extraction.
    Technical Report EN 23393. Joint Research Centre of the European Commission, 2008. [PDF]


  75. C. Best, J. Piskorski, B. Pouliquen, R. Steinberger, H. Tanev.
    Automatic Event Extraction for the Security Domain.
    Book chapter in: Security and Intelligence Informatics - Techniques and Applications, Volume 135/2008, pages: 17–43, Studies in Computational Intelligence Series, Springer, Heidelberg/New York, 2008. [PDF]


  76. H. Tanev, J. Piskorski, M. Atkinson.
    Real-time News Event Extraction for Global Crisis Monitoring.
    Accepted for publication in the Proceedings of 13th International Conference on Applications of Natural Language to Information Systems (NLDB 2008), London, 24-27 June, 2008, Lecture Notes in Computer Science, Vol. 5039, Springer, ISBN 978-3-540-69857-9. [PDF]


  77. S. Kübler, J. Piskorski, A. Przepiórkowski (editors).
    Proceedings of Workshop on Partial Parsing: Between Chunking and Deep Parsing.
    (PaPa 2008), 6th Language Resources and Evaluation Conference (LREC 2008), Marrakech, Morocco, 1 June, 2008.


  78. J.Piskorski, M.Sydow, D.Weiss.
    Exploring Linguistic Features for Web Spam Detection: A Preliminary Study.
    In Proceedings of the 4th Workshop on Adversarial Information Retrieval on the Web (AIRWEB 2008), 16th World Wide Web Conference 21-25 April, 2008, Beijing, China. [PDF]


  79. J.Piskorski, K.Wieloch, M.Pikuła, M.Sydow.
    Towards Person Name Matching for Inflective Languages.
    In Proceedings of the Workshop on NLP Challenges in the Information Explosion Era (NLPIX 2008), 16th World Wide Web Conference 21-25 April, 2008, Beijing, China. [PDF]


  80. J. Piskorski.
    ExPRESS – Extraction Pattern Recognition Engine and Specification Suite.
    In Proceedings of the International Workshop Finite-State Methods and Natural Language Processing 2007 (FSMNLP 2007). Potsdam, Germany, 14-16 September, 2007. [PDF]


  81. J. Piskorski, M. Sydow.
    Usability of String Distance Metrics for Name Matching Tasks in Polish.
    In Proceedings of the 3rd Language & Technology Conference: Human Language Technologies as a Challenge for Computer Science and Linguistics, (LTC 2007), ISBN 978-837177-407-2, pp. 403-407, Wydawnictwo Poznańskie Sp. z o.o., Poznań, Poland, 5-7 October, 2007. [PDF]


  82. A. Mykowiecka, A. Kupść, M. Marciniak J. Piskorski.
    Resources for Information Extraction from Polish texts.
    In Proceedings of the 3rd Language & Technology Conference: Human Language Technologies as a Challenge for Computer Science and Linguistics, (LTC 2007), ISBN 978-837177-407-2, pp. 403-407, Wydawnictwo Poznańskie Sp. z o.o., Poznań, Poland, 5-7 October, 2007.


  83. J. Piskorski.
    On Some Aspects of Implementing a Pattern Engine based on Regular Expressions over Feature Structures.
    In Proceedings of the International Conference Recent Advances in Natural Language Processing (RANLP 2007). Borovets, Bulgaria, 27-29 September, 2007.


  84. J. Piskorski, H. Tanev, B. Pouliquen, R. Steinberger (editors).
    Proceedings of the Workshop on Balto-Slavonic Natural Language Processing 2007.
    (BSNLP 2007) - Special Theme: Information Extraction and Enabling Technologies. Held at the 45th Annual Meeting of the Association for Computational Linguistics (ACL 2007), Prague, Czech Republic, 29 June 2007. [PDF of the Preface][Full BSNLP Proceedings]


  85. J. Piskorski, A. Kupść, M. Sydow.
    Lemmatization of Polish Person Names.
    In Proceedings of the ACL Workshop on Balto-Slavonic Natural Language Processing 2007 - Special Theme: Information Extraction and Enabling Technologies (BSNLP 2007). Held at ACL 2007. Prague, Czech Republic, 29 June 2007. [PDF]


  86. P. Oezden-Wennerberg, H. Tanev, J. Piskorski, C. Best.
    Ontology-based Analysis of Violent Events.
    In Proceedings of Intelligence and Security Informatics (ISI 2007). New Brunswick, New Jersey, USA, 23-24 May, 2007.


  87. J. Piskorski, H. Tanev, P. Oezden-Wennerberg.
    Extracting Violent Events from On-line News for Ontology Population.
    In Proceedings of 10th International Conference on Business Information Systems (BIS 2007), Poznań, Poland, 25-27 April, 2007. Lecture Notes in Computer Science, Vol. 4439, pages 287-300. Springer-Verlag, Berlin, Heidelberg, New York. [PDF]


  88. J. Piskorski, M. Sydow.
    String Distance Metrics for Reference Matching and Search Query Correction.
    In Proceedings of 10th International Conference on Business Information Systems (BIS 2007), Poznań, Poland, 25-27 April, 2007. Lecture Notes in Computer Science, Vol. 4439, pages 353-365. Springer-Verlag, Berlin, Heidelberg, New York. [PDF]


  89. J. Piskorski, A. Filipowska, K. Węcel, K. Wieloch.
    Polish Texts Analysis for Developing Semantic-Aware Information Systems .
    Book chapter in: W. Abramowicz, H. C. Mayr (editors) Technologies for Business Information Systems, pages: 277-287, Springer Verlag, ISBN 978-1-4020-5633-8. [PDF]


  90. J. Daciuk, J. Piskorski.
    Gazetteer Compression Technique based on Substructure Recognition.
    In Proceedings of the Internation Conference on Intelligent Information Systems (IIS 2006), Ustroń, Poland, 19-22 June, 2006, pages: 87-95, Springer Verlag, Advances in Soft Computing, Vol. 35. [PDF]


  91. J. Piskorski.
    On Compact Storage Models for Gazetteers.
    In A. Yli-Jyrä, L. Karttunen, J. Karhumäki (editors). Proceedings of the 5th Internationbal Workshop on Finite-State Methods and Natural Language Processing (FSMNLP 2005), Helsinki, Finland, 1–2 September, 2005, Lecture Notes in Artificial Intelligence, Vol. 4002, Springer, 2006. [PDF]


  92. W. Drożdżyński, H.-U. Krieger, J. Piskorski, U. Schäfer.
    SProUT - a General-Purpose NLP Framework Integrating Finite-State and Unification-based Grammar Formalisms.
    In A. Yli-Jyrä, L. Karttunen, J. Karhumäki (editors). Proceedings of the 5th Internationbal Workshop on Finite-State Methods and Natural Language Processing (FSMNLP 2005), Helsinki, Finland, 1–2 September, 2005, Lecture Notes in Artificial Intelligence, Vol. 4002, Springer, 2006. [PDF]


  93. J. Piskorski, M. Sydow.
    Fine-tuning N-gram-based Text Classifier for Highly Inflective Languages.
    In Proceedings of (ICAISC 2006), Zakopane, Poland. Publication in: Challenging Problems of Computer Science, Artificial Intelligence and Soft Computing, editors: A. Cader, L. Rutkowski, R. Tadeusiewicz, J. Zurada, Academic Publishing House EXIT, Polish Neural Society, IEEE Computational Intelligence Society - Poland Chapter, pp. 494-499 ISBN 83-60434-09-3, Warsaw, 2006.


  94. W. Abramowicz, A. Filipowska, J. Piskorski, K. Węcel, K. Wieloch.
    Linguistic Suite for Polish Cadastral System.
    Proceedings of the 5th International Conference on Language Resources and Evaluation (LREC 2006), pages: 53-58, Genoa, Italy, 24-26 May, 2006.


  95. J. Piskorski, K. Węcel, A. Filipowska, K. Wieloch.
    An Annotated Corpus for Development of Modern Cadastral Information Systems.
    In Proceedings of 9th International Conference on Business Information Systems (BIS 2006), ISBN 3-88579-179-X, GI 2006, Klagenfurt, 31 May – 2 June, 2006.


  96. J. Piskorski, M. Sydow.
    Experiments on classification of Polish Newspaper Articles.
    Journal article in Archives of Control Sciences, Special issue on Human Language Technologies as a challenge for Computer Science and Linguistics Part II, editor: Z. Vetulani, Volume 15, pages: 613-625, 2005.


  97. W. Skut, J. Piskorski, J. Daciuk
    Finite-State Machines - Foundations and Applications to Text Processing and Pattern Recognition.
    Course book on Finite-State Methods in NLP held at (ESSLI 2005), Heriot-Watt University, Edinburgh, Scotland, August, 2005. [PDF]


  98. J. Piskorski.
    Modelling of a Gazetteer Look-up Component.
    In Proceedings (Companion Volume) of the 2nd International Joint Conference on Natural Language Processing (IJCNLP 2005), pages: 163-168, Asian Federation of Natural Language Processing, Jeju Island, Republic of Korea, October, 2005. [PDF]


  99. J. Piskorski.
    Named-Entity Recognition for Polish with SProUT
    In: Leonard Bolc, Zbigniew Michalewicz, Toyoaki Nishida (editors): Lecture Notes in Computer Science Vol 3490: Intelligent Media Technology for Communicative Intelligence: Second International Workshop, IMTCI 2004, Warsaw, Poland, 13-14 September, 2004. Revised Selected Papers, pages: 122-133, Springer Berlin-Heidelberg, ISSN 0302-9743, 2005. [PDF]


  100. M. Marciniak, A. Mykowiecka, A. Kupść, J. Piskorski.
    Intelligent Content Extraction from Polish Medical Reports.
    In: Leonard Bolc, Zbigniew Michalewicz, Toyoaki Nishida (editors): Lecture Notes in Computer Science Vol 3490: Intelligent Media Technology for Communicative Intelligence: Second International Workshop, IMTCI 2004, Warsaw, Poland, 13-14 September, 2004. Revised Selected Papers, pages: 68-78, Springer Berlin-Heidelberg, ISSN 0302-9743, 2005. [PDF]


  101. J. Piskorski, M. Sydow.
    Exploring deployment of linguistic features in Classification of Polish Texts.
    In Proceedings of the 2nd Language & Technology Conference: Human Language Technologies as a Challenge for Computer Science and Linguistics (LTC 2005) 21-23 April, 2005, Poznań, Poland.


  102. M. Kowalkiewicz, T. Kaczmarek, J. Piskorski.
    Information Extraction from CV.
    In Proceedings of the 8th International Conference on Business Information (BIS 2005) ,pages: 185–189, 2005, Poznań, Poland.


  103. W. Drożdżyński, H.-U. Krieger, J. Piskorski, U. Schäfer, F. Xu.
    Shallow Processing with Unification and Typed Feature Structures - Foundations and Applications.
    Journal article in Künstliche Intelligenz Volume 1/2004, pages: 17-23, Gesellschaft für Informatik e.V. (GI), 2004. [PDF]


  104. H.-U. Krieger, W. Drożdżyński, J. Piskorski, U. Schäfer, F. Xu.
    A Bag of Useful Techniques for Unification-Based Finite-State Transducers.
    In Proceedings of 7th KONVENS (Konferenz zur Verarbeitung natuerlicher Sprache), Schriftenreihe der Oesterreichischen Gesellschaft f. Artificial Intelligence, Volume 5, pages: 105-112, ISBN 3-85027-005-X, Vienna, 2004. [PDF]


  105. J. Piskorski.
    Automatic Named-Entity Recognition for Polish.
    In Proceedings of an International Workshop on Intelligent Media Technology for Communicative Intelligence (IMTCI 2004) , Warsaw, Poland, 2004.


  106. A. Kupść, M. Marciniak, A. Mykowiecka, J. Piskorski.
    Intelligent Content Extraction from Polish Medical Reports.
    In Proceedings of an International Workshop on Intelligent Media Technology for Communicative Intelligence (IMTCI 2004) , Warsaw, Poland, 2004. [PDF]


  107. A. Kupść, M. Marciniak, A. Mykowiecka, J. Piskorski, T. Podsiadły-Marczykowska.
    Information Extraction from Mammogram Reports.
    In Proceedings of 7th KONVENS (Konferenz zur Verarbeitung natuerlicher Sprache), Schriftenreihe der Oesterreichischen Gesellschaft f. Artificial Intelligence, Volume 5, pages: 105-112, ISBN 3-85027-005-X, Vienna, Austria, 2004. [PDF]


  108. W. Drożdżyński, H.-U. Krieger, J. Piskorski, U. Schäfer.
    A Multilingual Content Production Tool for the Semantic Web.
    In Proceedings of Technology Demos at the European Conference on Knowledge Engineering and Knowledge Management (EKAW 2004) , Northamptonshire, UK, 5-8 October, 2004. [PDF]


  109. W. Kasper, J. Steffen, J. Piskorski, P. Buitelaar.
    Integrated Language Technologies for Multilingual Information Services in the MEMPHIS Project.
    In Proceedings of the 4th International Conference on Language Resources and Evaluation (LREC 2004) , pages: 1939-1942, Lisabon, Portugal, May, 2004. [PDF]


  110. J. Piskorski.
    Extraction of Polish Named-Entities.
    In Proceedings of the 4th International Conference on Language Resources and Evaluation (LREC 2004) , Lisabon, Portugal, May, 2004. [PDF]


  111. J. Piskorski.
    Rule-based Named-Entity Recognition for Polish.
    In Proceedings of the Workshop on Named-Entity Recognition for NLP Applications held in conjunction with the 1st International Joint Conference on NLP (IJCNLP 2004) , March 2004, Sanya, Hainan Island, China, 2004. [PDF]


  112. J. Piskorski, P. Homola, M. Marciniak, A. Mykowiecka, A. Przepiórkowski, M. Woliński.
    Information Extraction for Polish Using the SProUT Platform.
    In Proceedings of International Conference on Intelligent Information Systems (IIS 2004) - New Trends in Intelligent Information Processing and Web Mining, May 2004, Zakopane, Poland, 2004, Springer Series: Advances in Soft Computing , Vol. 25, M. Kłopotek, S. Wierzchoń, K. Trojanowski, (editors), ISBN: 978-3-540-21331-4. [PDF]


  113. P. Homola, J. Piskorski.
    How can shallow NLP help a machine translation system.
    In Proceedings of the Conference Human Language Technologies - The Baltic Perspective, April 2004, Riga, Latvia, 2004.


  114. J. Piskorski.
    SproUT: An Integrated Set of Tools for Shallow Text Processing.
    In Proceedings of the 7th International Conference on Business Information Systems (Special Session on Language Technology for Business Applications) (BIS 2004) , April 24-25, Poznan, Poland, 2002.


  115. J. Piskorski.
    Technologia ekstrakcji informacji.
    Article in an IT journal Software 2.0 Extra! Volume 1/2004, 8/2004.


  116. J. Piskorski.
    Advances in Information Extraction
    In: W. Abramowicz (editor). Knowledge-based Information Retrieval and Filtering from the Web. The Springer International Series in Engineering and Computer Science, Vol. 746, Pages 23-52, ISBN: 978-1-4020-7523-0, 2003.


  117. S. Busemann, W, Drożdżyński, H.-U. Krieger, J. Piskorski, U. Schäfer, H. Uszkoreit, F. Xu.
    Integrating Information Extraction and Automatic Hyperlinking.
    In Proceedings of the Interactive Posters/Demonstration at 41st Annual Meeting of the Association for Computational Linguistics, (ACL 2003) pages: 117-120, 7-12 July, Sapporo, Japan, 2003. [PDF]


  118. C. Bering, W. Drożdżyński, G. Erbach, C. Guasch, P. Homola, S. Lehmann, L. Hong, H.-U. Krieger, J. Piskorski, U. Schäfer, A. Shimada, M. Siegel, F. Xu, D. Ziegler-Eisele.
    Corpora and evaluation tools for multilingual named entity grammar development.
    In Proceedings of Multilingual Corpora Workshop at Corpus Linguistics 2003, pages: 42-52, Lancaster, UK, March, 2003. [PDF]


  119. W. Drożdżyński, P. Homola, J. Piskorski, V. Zinkevicius.
    Adapting SproUT to processing Baltic and Slavonic Languages.
    In Proceedings of the Workshop Information Extraction for Slavonic Languages IESL 2003 , held in conjunction with the Conference on Recent Advances in Natural Language Processing RANLP 2003, 10-12 September 2003, Borovets, Bulgaria, 2003. [PDF]


  120. J. Piskorski, T. Jäger, F. Xu.
    A Parametrizable Task-adaptive Named-Entity Recognition System.
    In H.-M. Haav, A. Kalja (editors): Databases and Information Systems II, Selected Papers from the 5th International Baltic Conference (DB & IS 2002), Kluwer Academic Publishers, ISBN 1-4020-1038-9, 2003.


  121. W. Abramowicz, J. Piskorski.
    Information Extraction from Free-Text Business Documents.
    Book chapter in: S. Becker (editor). Effective Databases for Text & Document Management, pages: 12-23, IRM Press, ISBN:1-931777-47-0, Hershey, USA, 2003. [PDF]


  122. M. Becker, W. Drożdżyński, H.-U. Krieger, J. Piskorski, U. Schäfer, F. Xu.
    SProUT - Shallow Processing with Typed Feature Structures and Unification.
    In Proceedings of the International Conference on Natural Language Processing (ICON 2002), December 18-21, Mumbai, India, 2002. [PDF]


  123. G. Neumann, J. Piskorski.
    A Shallow Text Processing Core Engine.
    In Journal of Computational Intelligence Volume 18 Number 3, pages: 451–476, BlackWell Synergy, 2002. [PDF]


  124. J. Piskorski.
    Finite-State Machine Toolkit.
    Technical Report, Number RR-02-04, DFKI GmbH, Saarbrücken, 2002. [PDF]


  125. J. Piskorski.
    Shallow Text Processor Based of Finite-State Technology for Information Extraction.
    PhD Thesis. Institute for Computer Science of the Polish Academy of Sciences. November, 2002. Supervised by W. Abramowicz and Reviewed by A. Skowron and M. Kłopotek. [LINK]


  126. J. Piskorski, W. Drożdżyński, F. Xu, O. Scherf.
    A Flexible XML-based Regular Compiler for Creation and Converting Linguistic Resources.
    In Proceedings of the 3rd International Conference on Language Resources an Evaluation (LREC 2002), Las Palmas, Canary Islands, Spain, 2002. [PDF]


  127. B. Crysmann, A. Frank, B. Kiefer, H.-U. Krieger, S. Müller, G. Neumann, J. Piskorski, U. Schäfer, M. Siegel, H. Uszkoreit, F. Xu.
    An Integrated Architecture for Shallow and Deep Processing.
    In Proceedings of Association for Computational Linguistics 40th Anniversary Meeting (ACL 2002), , July 7-12, Philadelphia, USA, 2002. [PDF]


  128. W. Abramowicz, J. Piskorski.
    Information Extraction from Free Text Business Documents.
    In Proceedings Information Resources Management Association International Conference (IRMA 2002) , May 19-22, Seattle, 2002.


  129. J. Piskorski, T. Jäger, F. Xu.
    A Framework for Domain and Task Adaptive Named-Entity Recognition.
    In Proceedings of the 5th International Baltic Conference on Databases and Information Systems (DB & IS 2002), , 3-6 June, Tallinn, Estonia, 2002. [PDF]


  130. F. Xu, D. Kurz, J. Piskorski, S. Schmeier.
    A Domain Adaptive Approach to Automatic Acquisition of Domain Relevant Terms and their Relations with Bootstrapping.
    In Proceedings of the 3rd International Conference on Language Resources an Evaluation (LREC 2002) , May 29-31, Las Palmas, Canary Islands, Spain, 2002. [PDF]


  131. F. Xu, D. Kurz, J. Piskorski, S. Schmeier.
    Term Extraction and Mining Term Relations from Free-Text Documents in the Financial Domain.
    In Proceedings of the 5th International Conference on Business Information Systems (BIS 2002) , April 24-25, Poznan, Poland, 2002.


  132. J. Piskorski, G. Neumann.
    An Intelligent Text Extraction and Navigation System.
    In Proceedings of the 6th International Conference on Computer-Assisted Information Retrieval (RIAO 2000), Paris, France, 2000. [PDF]


  133. G. Neumann, C. Braun, J. Piskorski.
    A Divide-and-Conquer Strategy for Shallow Parsing of German Free Texts.
    In Proceedings of the 6th Applied Natural Language Processing Conference (ANLP 2000). 1st Meeting of the North American Chapter of the Association for Computational Linguistics (NAACL'00), 29 April - 4 May pages: 239-246, ACL, Seattle, Washington, USA, 2000. [PDF]


  134. J. Piskorski, W. Skut.
    Intelligent Information Extraction.
    In Proceedings of the 4th International Conference on Business Information Systems (BIS 2000), Springer Verlag, April 24-25, Poznań, Poland, 2000.


  135. W. Abramowicz, J. Piskorski.
    Gewinnen von Informationen aus aktiven und passiven Informationsquellen im Internet.
    In Proceedings of Business Information Systems 1997, Poznań, Poland, 1997.


  136. W. Abramowicz, D. Ceglarek, J. Piskorski.
    Pozyskiwanie i gromadzenie informacji ekonomicznych oraz prawnych z aktywnych i pasywnych zródeł informacji w sieci Internet.
    In A. Małachowski (editor) Identyfikacja technologiczna i aplikacyjna mediów komunikacji gospodarczej, Nowe kierunki badań, Wydawnictwo Akademii Ekonomicznej im. Oskara Langego we Wrocławiu, pages 41-58, Wrocław, Poland, 1996.


  137. J. Piskorski.
    Parallele Graphenalgorithmen auf dem Hypercube (Parallel Graph Algorithms for the Hypercube).
    Master Thesis. Technical Faculty of the University of Saarland & Max-Planck Institute for Computer Science in Saarbrücken, Germany, Supervised by Prof. Kurt Mehlhorn. 1994. (URL)