Du surfar just nu på en begränsad version av umu.se. Vad innebär det här?

"False"
Umeå universitet
printicon
Huvudmenyn dold.
Personalbild Johanna Björklund

Johanna Björklund

Jag arbetar med grundforskning inom formella språk och maskininlärning samt tillämpad forskning inom semantisk analys av multimodal data.

Vetenskaplig meritering: Docent

Kontakt

E-post
johanna.bjorklund@umu.se
Telefon
090-786 79 27

Verksam som

Anknytning
Professor vid Institutionen för datavetenskap
Plats
Besöksadress, se karta

Jag är universitetslektor i datavetenskap med fokus på semantisk analys av multimodal data, med andra ord, automatiska metoder för att översätta sammansatta mediaobjekt, till exempel en video med ljudspår och undertexter, till ett graf-baserat format som är lämpligt för fortsatt algoritmisk bearbetning. 

From precision to perception: user surveys in the evaluation of keyword extraction algorithms
HILDA '25: Proceedings of the Workshop on Human-In-the-Loop Data Analytics
Cai, Jingwen; Leckner, Sara; Björklund, Johanna
Opinion units: concise and contextualized representations for aspect-based sentiment analysis
Proceedings of the Joint 25th Nordic Conference on Computational Linguistics and 11th Baltic Conference on Human Language Technologies (NoDaLiDa/Baltic-HLT 2025), Northern European Association for Language Technology 2025 : 230-240
Häglund, Emil; Björklund, Johanna
VOICE: Visual Oracle for Interaction, Conversation, and Explanation
IEEE Transactions on Visualization and Computer Graphics
Jia, Donggang; Irger, Alexandra; Besancon, Lonni; et al.
The second visual object tracking segmentation VOTS2024 challenge results
Computer Vision – ECCV 2024 Workshops: ECCV 2024, Cham: Springer 2025 : 357-383
Kristan, Matej; Matas, Jiří; Tokmakov, Pavel; et al.
How ChatGPT changed the media’s narratives on AI: a semi-automated narrative analysis through frame semantics
Minds and Machines, Springer Nature 2025, Vol. 35, (1)
Ryazanov, Igor; Öhman, Carl; Björklund, Johanna
Parsing unranked tree languages, folded once
Algorithms, MDPI 2024, Vol. 17, (6)
Berglund, Martin; Björklund, Henrik; Björklund, Johanna
Tree-based generation of restricted graph languages
International Journal of Foundations of Computer Science, World Scientific 2024, Vol. 35, (1 & 2) : 215-243
Björklund, Henrik; Björklund, Johanna; Ericson, Petter
The impact of state merging on predictive accuracy in probabilistic tree automata: Dietze's conjecture revisited
Journal of computer and system sciences (Print), Elsevier 2024, Vol. 146
Björklund, Johanna
Optimising contextual advertising through real-time bidding with budget constraints
Proceedings of the workshop on strategic and utility-aware recommendations (SURE 2024), Bari, Italy, 14th-18th October 2024
Cai, Jingwen; Björklund, Johanna
Should advertisers avoid negative news?: Advertising effects of negative affect, news site credibility, and applicability between article and ad
Marketing and AI: Shaping the Future Together: Proceedings of the 2024 AMS Annual Conference, Coral Gables, FL, USA, May 22–24, Springer Nature 2024 : 12-25
Häglund, Emil; Björklund, Johanna
AI-driven contextual advertising: toward relevant messaging without personal data
Journal of Current Issues and Research in Advertising, Routledge 2024, Vol. 45, (3) : 301-319
Häglund, Emil; Björklund, Johanna
Thesis Proposal: Detecting Agency Attribution
Proceedings of the 18th conference of the European chapter of the association for computational linguistics: student research workshop, Association for Computational Linguistics (ACL) 2024 : 208-214
Ryazanov, Igor; Björklund, Johanna
Generating semantic graph corpora with graph expansion grammar
13th International Workshop on Non-Classical Models of Automata and Applications (NCMA 2023), Open Publishing Association 2023 : 3-15
Andersson, Eric; Björklund, Johanna; Drewes, Frank; et al.
Parsing unranked tree languages, folded once
Fundamentals of computation theory: 24th International Symposium, FCT 2023, Trier, Germany, September 18–21, 2023, Proceedings, Springer Nature 2023 : 60-73
Berglund, Martin; Björklund, Henrik; Björklund, Johanna
Transduction from trees to graphs through folding
Information and Computation, Elsevier 2023, Vol. 295
Berglund, Martin; Björklund, Henrik; Björklund, Johanna; et al.
The impact of state merging on predictive accuracy in probabilistic tree automata: Dietze’s conjecture revisited
Fundamentals of computation theory: 24th International Symposium, FCT 2023, Trier, Germany, September 18–21, 2023, Proceedings, Springer Nature 2023 : 74-87
Björklund, Johanna
Generation and polynomial parsing of graph languages with non-structural reentrancies
Computational linguistics - Association for Computational Linguistics (Print), Association for Computational Linguistics 2023, Vol. 49, (4) : 841-882
Björklund, Johanna; Drewes, Frank; Jonsson, Anna
The tenth visual object tracking VOT2022 challenge results
Computer vision – ECCV 2022 workshops: Tel Aviv, Israel, October 23–27, 2022, proceedings, part VIII, Cham: Springer 2023 : 431-460
Kristan, Matej; Leonardis, Aleš; Björklund, Johanna; et al.
The first visual object tracking segmentation VOTS2023 challenge results
2023 IEEE/CVF International conference on computer vision workshops (ICCVW), Institute of Electrical and Electronics Engineers Inc. 2023 : 1788-1810
Kristan, Matej; Matas, Jiří; Danelljan, Martin; et al.
How does the language of 'threat' vary across news domains?: a semi-supervised pipeline for understanding narrative components in news contexts
SAIS 2023: 35th Annual Workshop of the Swedish Artificial Intelligence Society, Swedish Artificial Intelligence Society 2023 : 94-99
Ryazanov, Igor; Björklund, Johanna
Improved N-Best Extraction with an Evaluation on Language Data
Computational linguistics - Association for Computational Linguistics (Print), MIT Press 2022, Vol. 48, (1) : 119-153
Björklund, Johanna; Drewes, Frank; Jonsson, Anna
Aggregation-based minimization of finite state automata
Acta Informatica, Springer Nature 2021, Vol. 58 : 177-194
Björklund, Johanna; Cleophas, Loek
Bottom-up unranked tree-to-graph transducers for translation into semantic graphs
Theoretical Computer Science, Elsevier 2021, Vol. 870 : 3-28
Björklund, Johanna; Cohen, Shay B.; Drewes, Frank; et al.
Bridging Perception, Memory, and Inference through Semantic Relations
Proceedings of the 2021 Conference on Empirical Methods in Natural Language Processing, Association for Computational Linguistics (ACL) 2021 : 9136-9142
Björklund, Johanna; Dahlgren Lindström, Adam; Drewes, Frank
Towards Semantic Representations with a Temporal Dimension
SLTC 2020 – The Eighth Swedish Language Technology Conference, Online, November 25–27, 2020
Björklund, Johanna; Drewes, Frank; Mollevik, Iris
Probing Multimodal Embeddings for Linguistic Properties: the Visual-Semantic Case
Proceedings of the 28th International Conference on Computational Linguistics (COLING) : 730-744
Dahlgren Lindström, Adam; Björklund, Johanna; Bensch, Suna; et al.
Guiding principles for the use of knowledge bases and real-world data in clinical decision support systems: report by an international expert workshop at Karolinska Institutet
Expert Review of Clinical Pharmacology, Taylor & Francis 2020, Vol. 13, (9) : 925-934
Hoffmann, Mikael; Vander Stichele, Robert; Bates, David W.; et al.
Bottom-up unranked tree-to-graph transducers for translation into semantic graphs
Proceedings of the 14th International Conference on Finite-State Methods and Natural Language Processing, Association for Computational Linguistics 2019 : 7-17
Björklund, Johanna; Cohen, Shay B.; Drewes, Frank; et al.
Z-Automata for Compact and Direct Representation of Unranked Tree Languages
Implementation and Application of Automata: 24th International Conference, CIAA 2019 Košice, Slovakia, July 22–25, 2019, Proceedings, Springer 2019 : 83-94
Björklund, Johanna; Drewes, Frank; Satta, Giorgio
Efficient enumeration of weighted tree languages over the tropical semiring
Journal of computer and system sciences (Print), Vol. 104 : 119-130
Björklund, Johanna; Drewes, Frank; Zechner, Niklas
How Spatial Relations Structure Linguistic Meaning
Proceedings of the 15th SweCog Conference, Skövde: University of Skövde 2019 : 29-31
Björklund, Johanna; Johansson Falck, Marlene
Minimisation and Characterisation of Order-Preserving DAG Grammars
Report / UMINF, 18.15
Björklund, Henrik; Björklund, Johanna; Ericson, Petter
Tree-to-Graph Transductions with Scope
Developments in Language Theory. DLT 2018., Springer 2018 : 133-144
Björklund, Johanna
A Comparison of Two N-Best Extraction Methods for Weighted Tree Automata
Implementation and Application of Automata: 23rd International Conference, CIAA 2018, Charlottetown, PE, Canada, July 30 – August 2, 2018, Proceedings, Springer 2018 : 197-108
Björklund, Johanna; Drewes, Frank; Jonsson, Anna
Deterministic Stack Transducers
International Journal of Foundations of Computer Science, World Scientific Publishing Co. Pte. Ltd. 2017, Vol. 28, (5) : 583-601
Bensch, Suna; Björklund, Johanna; Kutrib, Martin
On the Regularity and Learnability of Ordered DAG Languages
Implementation and Application of Automata: 22nd International Conference, CIAA 2017, Marne-la-Vallée, France, June 27-30, 2017, Proceedings, Cham: 2017 : 27-39
Björklund, Henrik; Björklund, Johanna; Ericson, Petter
Minimization of Finite State Automata Through Partition Aggregation
Language and Automata Theory and Applications: 11th International Conference, LATA 2017, Umeå, Sweden, March 6-9, 2017, Proceedings, Springer International Publishing AG 2017 : 223-235
Björklund, Johanna; Cleophas, Loek
An evaluation of structured language modeling for automatic speech recognition
Journal of universal computer science (Online), Graz: Graz university of technology, Institute for information systems computer media IICM 2017, Vol. 23, (11) : 1019-1034
Björklund, Johanna; Cleophas, Loek; Karlsson, My
Finding the N Best Vertices in an Infinite Weighted Hypergraph
Theoretical Computer Science, Elsevier 2017, Vol. 682 : 30-41
Björklund, Johanna; Drewes, Frank; Jonsson, Anna
Syntactic methods for topic-independent authorship attribution
Natural Language Engineering, CAMBRIDGE UNIV PRESS 2017, Vol. 23, (5) : 789-806
Björklund, Johanna; Zechner, Niklas
Deterministic Stack Transducers
Implementation and Application of Automata, Springer 2016 : 27-38
Bensch, Suna; Björklund, Johanna; Kutrib, Martin
Polynomial inference of universal automata from membership and equivalence queries
Information and Computation, Vol. 246 : 3-19
Bjorklund, Johanna; Fernau, Henning; Kasprzik, Anna
My name is legion: estimating author counts based on stylistic diversity
2016 European intelligence and security informatics conference (EISIC), IEEE 2016 : 108-111
Bjorklund, Johanna; Zechner, Niklas
Implementing a speech-to-text pipeline on the MICO platform
Report / UMINF, 16.07
Björklund, Henrik; Björklund, Johanna; Dahlgren, Adam; et al.
A Taxonomy of Minimisation Algorithms for Deterministic Tree Automata
Journal of universal computer science (Online), Vol. 22, (2) : 180-196
Björklund, Johanna; Cleophas, Loek
Minimization of Finite State Automata Through Partition Aggregation
Logical Aspects of Computational Linguistics: Celebrating 20 Years of LACL (1996–2016), SPRINGER-VERLAG BERLIN 2016 : 328-328
Björklund, Johanna; Cleophas, Loek
On the N best problem for hypergraphs
Workshop on Trends in Tree Automata and Tree Transducers (TTATT 2016), Seoul, South Korea, July 18, 2016
Björklund, Johanna; Drewes, Frank; Jonsson, Anna
Learning tree languages
Topics in grammatical inference, Springer Berlin/Heidelberg 2016 : 173-214
Björklund, Johanna; Fernau, Henning
MICO - MEDIA IN CONTEXT
2015 IEEE International Conference on Multimedia & Expo Workshops (ICMEW)
Aichroth, Patrick; Weigel, Christian; Kurz, Thomas; et al.
An efficient best-trees algorithm for weighted tree automata over the tropical semiring
Proc. 9th International Conference on Language and Automata Theory and Applications, Springer 2015 : 97-108
Björklund, Johanna; Drewes, Frank; Zechner, Niklas
Visa publikationer i DiVA

Forskargrupper

Forskningsledare
Foundations of Language Processing

Forskningsprojekt

1 januari 2024 till 31 december 2026
WARA Media & Language
1 januari 2021 till 31 december 2023
AI-baserad kontextuell kommunikation: Konsekvenser för individ och samhälle
1 januari 2021 till 31 december 2024
Semantisk parsning av multimodal data
1 januari 2020 till 31 december 2023
AI-driven kontextuell annonsering
1 mars 2019 till 31 december 2023
Multimodal semantisk analys: Göra språk meningsfullt i sin kontext
1 mars 2018 till 29 februari 2020
SAVANT – Self-optimising Video Platform for Affiliate Marketing
1 november 2014 till 30 september 2017
Syntactical methods for text classification