News
2025
June 13, 2025
Daniel Witschard (whom I co-supervised since September 2023) successfully defended his PhD thesis in Computer and Information Science entitled Using Multiple Embeddings for Visually Guided Text Similarity Analysis at LNU yesterday!
June 7, 2025
The iVis group members have attended EuroVis 2025 in Luxembourg City, Luxembourg during June 2–6, 2025. We and our collaborators have presented a range of contributions (including a full paper, a short paper, a workshop paper, and a poster with demo), organized a tutorial on dimensionality reduction, and served as chairs for STARs as well as Posters and Demos tracks.
Additionally, I received the Early Career Award and Best Reviewer Award at EuroVis 2025 in Luxembourg! I am truly honored to receive both of these prestigious awards and glad to contribute to the advances of the visualization research community.
May 31, 2025
Yesterday the ELLIIT Focus Period Spring 2025 on the topic of Visualization-Empowered Human-in-the-Loop Artificial Intelligence organized by Prof. Kerren, Dr. Vrotsou, and myself as well as our colleagues Tove Kvarnström and Denise Wahlström at LiU Campus Norrköping ended after five productive weeks, including a highly successful symposium. I would like to express my gratitude to all participants, especially the visiting scholars who stayed at LiU and launched several new collaborations as part of this Focus Period.
May 27, 2025
A new journal article by Navarra et al. titled "Leveraging Visual Analytics of Volunteered Geographic Information to Support Impact-Based Weather Warning Systems" has been published today in International Journal of Disaster Risk Reduction.
April 21, 2025
A new journal article by Witschard et al. titled "Exploring Similarity Patterns in a Large Scientific Corpus" has been published today in PLOS ONE.
March 21, 2025
A new journal article by Witschard et al. titled "Using Similarity Network Analysis to Improve Text Similarity Calculations" has been published today in Applied Network Science.
March 11, 2025
Our short paper titled "Designing Explainable and Counterfactual-Based AI Interfaces for Operators in Process Industries", presented at IVAPP 2025 in Porto, Portugal on February 26, 2025, is now available online in the SciTePress digital library.
Additionally, the preliminary program for the symposium at our ELLIIT Focus Period "Visualization-Empowered Human-in-the-Loop Artificial Intelligence" (May 13–15, 2025) has been announced lately.
February 15, 2025
Two new journal articles have recently become available online, namely, the study by Kucher et al. titled "Towards Visual Analytics for Explainable AI in Industrial Applications" in Analytics (MDPI) and the study by Witschard et al. titled "Visually Guided Extraction of Prevalent Topics" in Information Visualization.
2024
November 24, 2024
Two new journal articles have recently become available in early access (initially as journal pre-proofs), namely, the study by Nylin et al. titled "Glyph Design for Communication Initiation in Real-Time Human-Automation Collaboration" in Visual Informatics and the study by Neset et al. titled "Artificial Intelligence in Support of Weather Warnings and Climate Adaptation" in Climate Risk Management.
September 21, 2024
A new article by Fujiwara et al. titled "Adversarial Attacks on Machine Learning-Aided Visualizations" has been published in Journal of Visualization.
September 20, 2024
I will serve as the Posters and Demos track co-chair at EuroVis 2025, which will take place in Luxembourg City, Luxembourg during 2–6 June, 2025.
September 7, 2024
The 33rd International Symposium on Graph Drawing and Network Visualization (GD 2025) will be held in Norrköping, Sweden from September 24–26, 2025. A pre-conference PhD school will take place on September 22–23, 2025. Prof. Kerren and I will serve as general co-chairs. The website of the conference is already online at https://graphdrawing.github.io/gd2025/ and will soon be populated with more detailed information.
July 8, 2024
Last week I assisted to the presentation of our paper titled "Beyond Text and Speech in Conversational Agents: Mapping the Design Space of Avatars" at ACM Conference on Designing Interactive Systems (DIS) in Copenhagen, Denmark on July 4, 2024. The corresponding tool is available at https://academic-research-projects.gitlab.io/Chatbot-Avatar-Browser/.
June 2, 2024
I presented a workshop paper titled "Visual Analysis of Humor Assessment Annotations for News Headlines in the Humicroedit Data Set" at the First Workshop on Visualization for Natural Language Processing (Vis4NLP) co-located with EuroVis 2024 held in Odense, Denmark during May 27–31, 2024.
Additionally, Zeyang Huang (with me and Prof. Dr. Andreas Kerren as the co-authors) presented a poster paper titled "Towards a Visual Analytics System for Emotion Trajectories in Multiparty Conversations" (incl. an invited presentation at Vis4NLP), and Jinyi Wang (also with me and Prof. Dr. Andreas Kerren as the co-authors) presented a poster paper titled "Visual Analysis of Power Plant Data for European Countries" at the poster session of EuroVis 2024, where I served as one of the Poster track co-chairs.
April 18, 2024
On April 17, I joined Philip Engström (ITN Senior Research Coordinator) in giving an invited talk at the Swedish Police UGI IT Conference in Stockholm. Philip presented the new Data-Driven Development educational programme, while I gave an overview of the research carried out in our unit that is relevant to data-driven development and data analytics.
April 13, 2024
I will serve as the associate chair with a focus on information visualization at the 16th International Conference on Information Visualization Theory and Applications (IVAPP), which will take place in Porto, Portugal during 26–28 February, 2025
Please note that the deadline for the first batch of submissions (regular papers) for IVAPP 2025 is October 2, 2024, and for second batch (regular and position papers), it is November 13, 2024 (further information).
April 2, 2024
If you intend to use word clouds for text visualization, but you are aware of the shortcomings of classic word clouds, try out Word Rain! Our new article by Skeppstedt et al. titled "From Word Clouds to Word Rain: Revisiting the Classic Word Cloud to Visualize Climate Change Texts" is now published online in open access in the Information Visualization journal, and the source code is available on Github.
March 6, 2024
Last week I presented our short paper titled "Visualization of Swedish News Articles: A Design Study" at IVAPP 2024 in Rome, Italy on February 29, 2024.
February 9, 2024
A new article by Chatzimparmpas et al. titled "Visualization for Trust in Machine Learning Revisited: The State of the Field In 2023" has been published in IEEE CG&A.
2023
December 14, 2023
An ELLIIT Focus Period proposal by Prof. Kerren, Dr. Vrotsou, and myself titled "Visualization-Empowered Human-in-the-Loop Artificial Intelligence" has been granted for spring 2025! This 5-week guest program will allow us to invite younger as well senior researchers for a stay at MIT, including a 3-day symposium on this topic.
December 12, 2023
Magnus Nylin (whom I have co-supervised this year) has successfully defended his PhD thesis in Design entitled Flexible Automation in Air Traffic Control Through Adaptation of Human-Automation Collaboration at LiU today!
October 25, 2023
I will serve as the Posters track co-chair at EuroVis 2024, which will take place in Odense, Denmark during 27–31 May, 2024.
June 20, 2023
I will serve as the associate chair with a focus on information visualization at the 15th International Conference on Information Visualization Theory and Applications (IVAPP), which will take place in Rome, Italy during 27–29 February, 2024.
Please note that the regular paper submission deadline for IVAPP 2024 is October 9, 2023, and for position papers, it is November 17, 2023 (further information).
June 20, 2023
Dr. Katerina Vrotsou and I are co-editing a special issue on Visual Analytics: Techniques and Applications of the Analytics journal (MDPI). Paper submission deadline is on November 30, 2023 September 30, 2024.
June 20, 2023
Zeyang Huang and I (with Daniel Witschard and Prof. Dr. Andreas Kerren among the co-authors) presented a STAR (survey article) titled "VA + Embeddings STAR: A State-of-the-Art Report on the Use of Embeddings in Visual Analytics" at EuroVis 2023 held in Leipzig, Germany during June 12–16, 2023. The corresponding tool is available at https://va-embeddings-browser.ivis.itn.liu.se/.
Additionally, I received the Best Reviewer Award at EuroVis 2023!
April 27, 2023
Daniel Witschard (with me and Prof. Dr. Andreas Kerren among the co-authors) presented a short paper (the "Visualization Notes" track) titled "Optimizing Embedding-based Network Reconstruction" at IEEE PacificVis 2023 held in Seoul, Korea during April 18–21, 2023.
February 25, 2023
I presented our short paper "Supporting University Research and Administration via Interactive Visual Exploration of Bibliographic Data" at IVAPP 2023 in Lisbon, Portugal on February 20, 2023.
2022
October 20, 2022
Prof. Kerren and I have organized a mini-workshop titled Data Collection, Processing and (Visual) Analytics at the ELLIIT Annual Workshop 2022 in Linköping during October 19–20, 2022.
October 17, 2022
I have presented (remotely) a workshop paper titled "An Interdisciplinary Perspective on Evaluation and Experimental Design for Visual Text Analytics: Position Paper" at BELIV 2022, co-located with IEEE VIS 2022 in Oklahoma City, USA during October 16–21, 2022 (hybrid event).
Additionally, Zeyang Huang (with me and Prof. Dr. Andreas Kerren as co-authors) contributed a poster paper titled "Towards an Exploratory Visual Analytics System for Multivariate Subnetworks in Social Media Analysis", and Angelos Chatzimparmpas (with me and Prof. Dr. Kerren as co-authors) presented an invited TVCG article titled "FeatureEnVi: Visual Analytics for Feature Engineering Using Stepwise Selection and Semi-Automatic Extraction Approaches" at VIS 2022.
September 7, 2022
I have participated in an InfraVis meeting at Uppsala University during September 6–7, 2022 on the behalf of the LNU InfraVis node together with Prof. Dr. Kerren. InfraVis is a Swedish national research infrastructure for visualisation of data that unites nodes from nine universities.
September 1, 2022
Today, my employment as a senior lecturer at Linköping University has started. (According to the official LiU guidelines, "universitetslektor" is actually translated as "associate professor" rather than "senior lecturer"...)
August 31, 2022
A new article by Witschard et al. titled "Interactive Optimization of Embedding-based Text Similarity Calculations" has been published in the Information Visualization journal, and it has been featured on the cover of volume 21, issue 4.
May 16, 2022
Alongside my colleagues and alumni from the ISOVIS group, I have participated in the Dagstuhl Seminar 22191 on Visual Text Analytics.
April 1, 2022
Victoria Yantseva (whom I co-supervised since last June) has successfully defended her PhD thesis in Sociology entitled Frames of Threat and Solidarity: Dynamics of Media Discourse on Immigration in Sweden at LNU today!
February 24, 2022
Please consider donating to the cause of helping Ukrainians defend their country, or the volunteer organizations and charities assisting the victims of Russian aggression.
February 7, 2022
I presented our short paper "Task-Based Evaluation of Sentiment Visualization Techniques" at IVAPP 2022 held online during February 6–8, 2022.
February 2, 2022
A new article by Chatzimparmpas et al. titled "FeatureEnVi: Visual Analytics for Feature Engineering Using Stepwise Selection and Semi-Automatic Extraction Approaches" has been published in IEEE TVCG, and the respective study has also been awarded a Replicability Stamp.
2021
December 10, 2021
I have given an invited talk titled "A Gentle Introduction to Information Visualization and Visual Analytics: Theory and Tools" as part of the BoMoCult Lecture Series in Data Visualization for the Borders, Mobilities and Cultural Encounters (BoMoCult) research community at University of Eastern Finland (UEF) today.
December 6, 2021
I have participated in organizing SweDS 2021, the 9th Swedish Workshop on Data Science, which took place at LNU online during December 2–3, 2021. The proceedings have been published by IEEE, and they include two papers that I had co-authored.
October 1, 2021
I am glad to announce my participation as one of the LNU node members in InfraVis, the new Swedish National Research Infrastructure for Visualisation of Data, recently funded by the Swedish Research Council (VR) and involving nine Swedish universities.
September 16, 2021
An article titled "Fast and Reliable Incremental Dimensionality Reduction for Streaming Data" by Neves et al., resulting from a collaboration with researchers in Brazil and Canada, has been published in the Computers & Graphics journal (published by Elsevier).
August 5, 2021
Our publication "Empirical Study: Visual Analytics for Comparing Stacking to Blending Ensemble Learning", which was accepted as an invited paper at CSCS23 (held online during May 26–28, 2021 due to the COVID-19 situation; originally planned to take place in Bucharest, Romania), is now available online.
June 19, 2021
Angelos Chatzimparmpas has presented our article titled "VisEvol: Visual Analytics to Support Hyperparameter Search through Evolutionary Optimization" at EuroVis 2021 held online during June 14–18, 2021 due to the COVID-19 situation (originally planned to take place in Zurich, Switzerland).
May 6, 2021
I presented our education paper "Project in Visualization and Data Analysis: Experiences in Designing and Coordinating the Course" at Eurographics 2021 held online during May 3–7, 2021 due to the COVID-19 situation (originally planned to take place in Vienna, Austria).
February 12, 2021
I presented our position paper "Towards Visual Sociolinguistic Network Analysis" at IVAPP 2021 held online during February 8–10, 2021 due to the COVID-19 situation (originally planned to take place in Vienna, Austria).
2020
November 7, 2020
Last week, Angelos Chatzimparmpas presented our article titled "StackGenVis: Alignment of Data, Algorithms, and Models for Stacking Ensemble Learning Using Performance Metrics" at IEEE VIS 2020 held online during October 25–30, 2020 due to the COVID-19 situation (originally planned to take place in Salt Lake City, Utah, USA).
August 28, 2020
Our article "StanceVis Prime: Visual Analysis of Sentiment and Stance in Social Media Texts" is now published in Journal of Visualization in Open Access!
June 4, 2020
Last week, Angelos Chatzimparmpas (assisted by Prof. Fabrice Rossi, Prof. Andreas Kerren, and myself for the Q&A session) presented our survey article titled "The State of the Art in Enhancing Trust in Machine Learning Models with the Use of Visualizations" at EGEV2020, the joint Eurographics & Eurovis conferences held online during May 25–29, 2020 due to the COVID-19 situation (originally planned to take place in Norrköping, Sweden). The corresponding tool is available at https://trustmlvis.lnu.se.
Additionally, according to the recent data from Wiley, our survey article "The State of the Art in Sentiment Visualization" was the most downloaded Computer Graphics Forum publication at Wiley Online Library in 2019!
January 1, 2020
Today, my employment as an associate senior lecturer (biträdande lektor) at Linnaeus University has started. This type of academic position was introduced in Sweden in 2017, inspired by the US tenure-track position of an assistant professor.
2019
September 19, 2019
I have given an invited talk titled "Text, Sentiment, and Stance Visualization for Social Media Data" at a seminar at Fojo Media Institute, Linnaeus University, Kalmar today.
June 8, 2019
I have presented our poster paper "Text Visualization Revisited: The State of the Field in 2019" at EuroVis 2019 held in Porto, Portugal during June 4–7, 2019.
April 15, 2019
I have successfully defended my PhD dissertation today!
March 15, 2019
Spikning (nailing) of my PhD dissertation has taken place today at the Linnaeus University Library in Växjö.
February 27, 2019
The public defense of my PhD dissertation entitled "Sentiment and Stance Visualization of Textual Data for Social Media" is scheduled for April 15, 2019.
Assoc. Prof. Dr. Ross Maciejewski (Arizona State University) is going to be my opponent, and the examining committee is going to include Prof. Dr. Ir. Jarke J. van Wijk (Eindhoven University of Technology), Prof. Dr.–Ing. Jörn Kohlhammer (Technische Universität Darmstadt and Fraunhofer IGD), and Prof. Dr. Gerik Scheuermann (Universität Leipzig).
More information is available on the LNU announcement web page.
2018
August 16, 2018
The ISOVIS Group has hosted the 11th International Symposium on Visual Information Communication and Interaction (VINCI 2018) at Linnaeus University in Växjö during August 13–15, 2018. I have served as the proceedings chair and also as the chair for the posters fast forward session.
During the symposium, I have presented our short paper "Analysis of VINCI 2009–2017 Proceedings".
Maria Skeppstedt and I have also presented our poster "Application of Interactive Computer-Assisted Argument Extraction to Opinionated Social Media Texts".
June 11, 2018
Our poster paper "Visual Analysis of Sentiment and Stance in Social Media Texts" has received the best poster award at EuroVis 2018 held in Brno, Czech Republic during June 4–8, 2018!
May 24, 2018
A blog entry about our ACM TiiS article on ALVA has been published on Medium.
May 13, 2018
Maria Skeppstedt presented our paper "Topics2Themes: Computer-Assisted Argument Extraction by Visual Analysis of Important Topics" at the VisLR III workshop in Miyazaki, Japan on May 12, 2018.
March 15, 2018
I presented our article "Active Learning and Visual Analytics for Stance Classification with ALVA", published in ACM Transactions on Interactive Intelligent Systems in 2017, as an invited presentation at the ACM IUI 2018 conference in Tokyo, Japan on March 9, 2018.
February 1, 2018
I presented our short paper "DoSVis: Document Stance Visualization" at IVAPP 2018 in Funchal, Madeira, Portugal on January 29, 2018.
I have also served as the session chair for one of the IVAPP conference sessions.
2017
December 4, 2017
Our article "Visual Analysis of Online Social Media to Open Up the Investigation of Stance Phenomena" is now available from Information Visualization journal in Open Access.
Also, I presented our survey article "The State of the Art in Sentiment Visualization" (available from Computer Graphics Forum) during a special showcase session at the 3rd annual Big Data Conference at Linnaeus University, Växjö on December 1, 2017.
November 3, 2017
Our journal article "Annotating Speaker Stance in Discourse: The Brexit Blog Corpus" has been published in Corpus Linguistics and Linguistic Theory journal in Open Access.
Also, our journal article "BioVis Explorer: A Visual Guide for Biological Data Visualization Techniques" has been published in PLOS ONE in Open Access.
October 10, 2017
Rafael M. Martins presented our paper "StanceXplore: Visualization for the Interactive Exploration of Stance in Social Media" at the IEEE VIS '17 Workshop on Visualization for the Digital Humanities (VIS4DH '17) in Phoenix, Arizona, USA on October 2, 2017.
October 5, 2017
Our article "Active Learning and Visual Analytics for Stance Classification with ALVA" has been published in ACM Transactions on Interactive Intelligent Systems.
July 3, 2017
I presented our survey article "The State of the Art in Sentiment Visualization" (available from Computer Graphics Forum in Open Access!) as an invited STAR report at EuroVis 2017, Barcelona, Spain on June 14, 2017. The corresponding tool is available at http://sentimentvis.lnu.se.
Andreas Kerren and I also presented our poster "MDS-based Visual Survey of Biological Data Visualization Techniques" there. The corresponding tool is available at http://biovis.lnu.se.
2016
November 12, 2016
I gave an interactive presentation titled "Methodology and Applications of Visual Stance Analysis: An Interactive Demo" at the International Symposium on Digital Humanities, LNU, Växjö on November 7, 2016.
July 9, 2016
Andreas Kerren and I presented our poster "Visual Analysis of Text Annotations for Stance Classification with ALVA" at EuroVis 2016, Groningen, The Netherlands on June 8, 2016.
March 19, 2016
Our article "Visual Analysis of Online Social Media to Open Up the Investigation of Stance Phenomena", which was accepted by Information Visualization journal last year, has now been included into a journal issue.
Also, Daniel Cernea presented our paper "Visualizing Excitement of Individuals and Groups" (video) at EmoVis '16 workshop at ACM IUI 2016 in Sonoma, California, USA on March 10, 2016.
February 17, 2016
Our SentimentVis Browser is now available at http://sentimentvis.lnu.se.
2015
October 4, 2015
I gave a presentation titled "Toward Social Media Stance Analysis by Means of Visual Analytics" at the 3rd National Workshop on Data Science (SweDS), BTH, Karlskrona on September 30, 2015.
May 30, 2015
Teri Schamp-Bjerede and I gave a presentation titled "New Perspectives on Gathering, Vetting and Employing Big Data from Online Social Media: An Interdisciplinary Approach" at ICAME 36, Universität Trier, Trier, Germany on May 30, 2015.
April 15, 2015
I presented our paper titled "Text Visualization Techniques: Taxonomy, Visual Survey, and Community Insights" at the Vis Notes track of IEEE PacificVis 2015, Zhejiang University, Hangzhou, China on April 15, 2015 (video).
April 8, 2015
Teri Schamp-Bjerede and I gave a talk titled "An Interdisciplinary Approach to Gathering, Vetting and Employing Big Data from Online Social Media" at Centre for Languages and Literature seminar, Lund University on April 8, 2015.
March 25, 2015
Our article titled "Visual Analysis of Online Social Media to Open Up the Investigation of Stance Phenomena" has been accepted for publication by Information Visualization journal (video).
2014
December 12, 2014
I gave a talk titled "From Sentiment to Stance: Bootstrapping the Visual Analytics Approach for Social Media Stance Analysis" at a Computer Science department seminar, LNU on December 12, 2014.
November 14, 2014
Andreas Kerren and I presented two posters at IEEE VIS 2014, Paris, France: a VAST poster titled "Visual Analysis of Stance Markers in Online Social Media" (video) and an InfoVis poster titled "Text Visualization Browser: A Visual Survey of Text Visualization Techniques" (video).
June 29, 2014
Our Text Visualization Browser is now available at http://textvis.lnu.se.
June 13, 2014
I presented a paper by Andreas Kerren et al. titled "Multi-Scale Trend Visualization of Long-Term Temperature Data Sets" at SIGRAD 2014, Chalmers University, Göteborg on June 13, 2014.