Michael Wiegand

2025

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Overview of the CLEF-2025 CheckThat! Lab Task 1 on Subjectivity in News Articles.
Federico Ruggeri|Arianna Muti|Katerina Korre|Julia Maria Struß|Melanie Siegel|Michael Wiegand|Firoj Alam|Md. Rafiul Biswas|Wajdi Zaghouani|Maria Nawrocka|Bogdan Ivasiuk|Gogu Razvan|Andreiana Mihail
Working Notes of the Conference and Labs of the Evaluation Forum, CLEF 2025, Madrid, Spain, 9-12 September 2025.

2024

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Overview of the CLEF-2024 CheckThat! Lab Task 2 on Subjectivity in News Articles.
Julia Maria Struß|Federico Ruggeri|Alberto Barrón-Cedeño|Firoj Alam|Dimitar Dimitrov|Andrea Galassi|Georgi Pachov|Ivan Koychev|Preslav Nakov|Melanie Siegel|Michael Wiegand|Maram Hasanain|Reem Suwaileh|Wajdi Zaghouani
Working Notes of the Conference and Labs of the Evaluation Forum (CLEF 2024), Grenoble, France, 9-12 September, 2024.

2023

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Overview of the CLEF-2023 CheckThat! Lab: Task 2 on Subjectivity Detection.
Andrea Galassi|Federico Ruggeri|Alberto Barrón-Cedeño|Firoj Alam|Tommaso Caselli|Mücahid Kutlu|Julia Maria Struß|Francesco Antici|Maram Hasanain|Juliane Köhler|Katerina Korre|Folkert Leistra|Arianna Muti|Melanie Siegel|Mehmet Deniz Türkmen|Michael Wiegand|Wajdi Zaghouani
Working Notes of the Conference and Labs of the Evaluation Forum (CLEF 2023), Thessaloniki, Greece, September 18th to 21st, 2023.

2022

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Overview of the CLEF-2022 CheckThat! Lab on Fighting the COVID-19 Infodemic and Fake News Detection.
Preslav Nakov|Alberto Barrón-Cedeño|Giovanni Da San Martino|Firoj Alam|Julia Maria Struß|Thomas Mandl|Rubén Míguez|Tommaso Caselli|Mücahid Kutlu|Wajdi Zaghouani|Chengkai Li|Shaden Shaar|Gautam Kishore Shahi|Hamdy Mubarak|Alex Nikolov|Nikolay Babulkov|Yavuz Selim Kartal|Michael Wiegand|Melanie Siegel|Juliane Köhler
Experimental IR Meets Multilinguality, Multimodality, and Interaction - 13th International Conference of the CLEF Association, CLEF 2022, Bologna, Italy, September 5-8, 2022, Proceedings
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Overview of the CLEF-2022 CheckThat! Lab: Task 3 on Fake News Detection.
Juliane Köhler|Gautam Kishore Shahi|Julia Maria Struß|Michael Wiegand|Melanie Siegel|Thomas Mandl|Mina Schütz
Proceedings of the Working Notes of CLEF 2022 - Conference and Labs of the Evaluation Forum, Bologna, Italy, September 5th - to - 8th, 2022.

2013

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A survey of noise reduction methods for distant supervision.
Benjamin Roth|Tassilo Barth|Michael Wiegand|Dietrich Klakow
Proceedings of the 2013 workshop on Automated knowledge base construction, AKBC@CIKM 13, San Francisco, California, USA, October 27-28, 2013

2008

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Optimizing Language Models for Polarity Classification.
Michael Wiegand|Dietrich Klakow
Advances in Information Retrieval , 30th European Conference on IR Research, ECIR 2008, Glasgow, UK, March 30-April 3, 2008. Proceedings

2007

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Combining term-based and event-based matching for question answering.
Michael Wiegand|Jochen L. Leidner|Dietrich Klakow
SIGIR 2007: Proceedings of the 30th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, Amsterdam, The Netherlands, July 23-27, 2007
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The Alyssa System at TREC QA 2007: Do We Need Blog06?
Dan Shen|Michael Wiegand|Andreas Merkel|Stefan Kazalski|Sabine Hunsicker|Jochen L. Leidner|Dietrich Klakow
Proceedings of The Sixteenth Text REtrieval Conference, TREC 2007, Gaithersburg, Maryland, USA, November 5-9, 2007