DISA

When? March 13, 14.00-16.00
Where? Onsite: D2272 and via zoom
Registration: Please sign up for the seminar via this link https://forms.gle/EbRUASvY9c73kMNz6 by March 11. This is especially important if you plan to attend onsite so we can make sure there is fika for everyone

Agenda
14.00-14.10 Welcome and practical information
14.10-14.55 Palme archives as a chatbot – Tibo Bruneel
14.55 – 15.05 Coffee break
15.05 – 15.50 Dag Björnberg
15.50 -16.00 Sum up and plan for our upcoming seminars

Abstracts

Palme archives as a chatbot – Tibo Bruneel  
For nearly four decades, the assassination of Swedish Prime Minister Olof Palme has remained a complex and heavily disputed case. Although the investigation officially closed in 2020, the search for answers continues within a monumental digital footprint. This dataset is a chaotic, unstructured web of typed police reports, handwritten notes, maps, and images. 

How can we potentially find previously unknown clues buried within decades of scattered data? 
This presentation introduces “PalmeNet-Chat,” an LLM-powered investigative tool developed by Softwerk AB in collaboration with the true-crime podcast Spår. We will detail the technical challenge of processing this dense archive. By engineering an on-premise OCR pipeline utilising Vision Language Models, we transformed raw history into a structured, searchable library. We will then explore how we implemented Retrieval Augmented Generation (RAG) and vector databases to build a system capable of semantic search and contextual reasoning across the entire case file. Finally, we will offer a glimpse into the next phase of our project, showcasing how we are taking this investigative tool to an entirely new level. 

Dag Björnberg
To be updated shortly.

Where? Onsite: D2272 and via zoom
Registration: Please sign up for the seminar via this link https://forms.gle/QB5oiSWMpVofjBHY6 by February 11. This is especially important if you plan to attend onsite so we can make sure there is fika for everyone.

Abstracts
Novelty Detection Using Time-Series Transient Data from the Lead-Acid Forklift Batteries – Zijie Feng  
In industrial applications, monitoring the battery health of electrically powered machinery and detecting abnormal operating conditions is a persistent yet critical challenge. Traditionally, anomaly detection systems are developed reactively: abnormalities are identified only after they occur, often leading to operational disruptions and economic losses. Novelty detection offers an alternative by learning normal behavior and detecting previously unseen abnormalities.  

In this work, we compare a diverse set of data-driven novelty detection methods using simulated time-series transient data derived from real lead-acid forklift battery measurements, aiming to identify suitable solutions for different types of anomalies. 

Potential of Graph Neural Networks for Software Architecture Recovery– Rakshanda Jabeen  
Software architecture recovery (SAR) aims to uncover a system’s modular structure directly from source code, supporting comprehension and maintenance when documentation is missing or outdated. In this work, we investigate the potential of graph neural networks (GNNs) and unsupervised learning for SAR by modeling software systems as heterogeneous, multi-relational graphs. Nodes represent software entities (e.g., files or classes) and typed edges capture structural and functional dependencies such as calls, imports, inheritance, and other code-level relations. To complement dependency structures with meaning, we integrate semantic signals from source code identifiers and related textual artifacts via contextual code embeddings (e.g., Word2Vec), yielding representations that capture both what entities do and how they interact. 

We study heterogeneous GNN encoders that aggregate information across relation types, including heterogeneous graph convolution and heterogeneous attention mechanisms, to analyze the trade-off between fixed normalization and adaptive neighbor weighting in software graphs. On top of these encoders, we explore two unsupervised training paradigms: (i) graph autoencoding, where embeddings are learned by reconstructing observed dependency relations, and (ii) contrastive representation learning inspired by Deep Graph Infomax, which maximizes agreement between embeddings from the original graph and perturbed views. The resulting entity embeddings are clustered to recover candidate architectural modules. Preliminary results across multiple open-source systems indicate that combining semantic cues with structural and functional dependencies produces more meaningful module separation than using structure alone, demonstrating that modern graph representation learning is a promising direction for robust, automated SAR beyond heuristic baselines. 

When? Friday January 23, 14-16
Where? Onsite: D2272 at Linnaeus University in Växjö and online
Registration: Please sign up for the PhD-seminar via this link https://forms.gle/y8hxAvYLzJQHGdR48 by January 21 (especially important if you plan on attending onsite so we have fika for everyone)

Abstracts

Digital product passports: A value perspective
– Timmy Öberg
This presentation provides insights into an ongoing systematic mapping review of digital product passports (DPPs) from a value and ecosystem perspective. Based on existing and emerging classification schemes, the presentation maps the DPP research landscape and discusses current trends. The study explores where current DPP research is focused, including publication venues, research methods, contribution types, and industry sectors. It further analyzes the value dimensions the literature address, including value outcomes, value creation capabilities, and the value chain actors considered.

Designing and Evaluating Socio-Ecological Value Scorecards for Sustainable Smart Agriculture
– Saeed Niksaz
Sustainable farming increasingly uses digital tools such as sensors and artificial intelligence; however, many current evaluation methods do not fully consider the social and governance aspects of agriculture. This seminar brings together results from a systematic literature review and a conceptual model to explore how socio-ecological value scorecards can support sustainable smart farming.

The socio-ecological value scorecard is introduced as an easy-to-use dashboard that combines environmental, social, and economic measures to help farmers and other stakeholders make better decisions in farming systems. The seminar shows the value of scorecards in connecting digital innovation with sustainability goals.

When? Friday December 5, 14-16
Where? Onsite: D0073 and via zoom

Agenda
14.00-14.10 Welcome and practical information
14.10-14.55 Presentation and discussion: 
A Comparative Evaluation of AI-Generated and Human-Written Alt Text for Image Accessibility – Mexhid Ferati
14.55 – 15.05 Coffee break
15.05 – 15.50 Presentation and discussion: 
Leveraging AI to predict review helpfulness and automate assessment in higher education – Zenun Kastrati

15.50 -16.00 Sum up and plan for our upcoming seminars

Abstracts

A Comparative Evaluation of AI-Generated and Human-Written Alt Text for Image Accessibility – Mexhid Ferati
This study investigates the comparative quality of AI-generated and human-written alternative text (alt text) for images, with the goal of understanding their respective strengths, limitations, and potential for supporting digital accessibility. The study was motivated by the growing use of generative AI tools, such as ChatGPT, in content creation, and the need to evaluate their effectiveness in producing accessible image descriptions.

The study follows an experimental design assessing 15 images across five thematic categories: People, Animals, Scenery, Food, Objects. The assessment is conducted for appropriateness in five evaluation criteria: accuracy, conciseness, fluency, comprehensibility, and relevance. The compared text for each image includes an alt text manually written by a professional content creator and generated by ChatGPT using standardized prompts. A pilot survey with eleven participants tested the clarity and functionality of the evaluation process before a final survey collected data from 101 participants in Sweden, who rated pairs of AI-generated and human-written descriptions across the five evaluation parameters.

Leveraging AI to predict review helpfulness and automate assessment in higher education – Zenun Kastrati
This presentation introduces two AI-driven approaches aimed at improving teaching and assessment in higher education. The first approach focuses on predicting the helpfulness of student reviews in online course using a deep learning framework that combines textual features with course metadata and student satisfaction. The second explores the application of large language models (LLMs) for automated scoring and feedback generation. Together, these approaches demonstrate how AI can enhance feedback loops and assessment scalability, while also addressing challenges related to interpretability, rubric clarity, and task subjectivity.

You are welcome to attend Manoranjan Kumar’s final seminar (doctoral 90% control). The seminar will include a presentation and a follow-up discussion with Mirka Kans, Associate Professor at the Department of Mechanical Engineering.

When: Wednesday, December 17, 9:00–12:00
Where: Room D1167 and on Zoom

Title: Digital Twins for Construction Equipment

Abstract: The technology organization at Volvo Construction Equipment (VCE) aims to predict and verify the performance of machines like Wheel loaders (WL) and Articulated haulers (AH) to enhance product development, requirements engineering, and customer service etc. Hence, it is needed to virtualize machines and components using the existing sensors on the machines and infrastructure of the central server. Over the years, virtualization has been achieved through the use of digital twins (DTs) across different industries, but realizing it on dynamically complex machines has its own challenges. It is also an important step in this digital transformation journey.

What is the specific research question to be answered?

This PhD thesis describes and investigates how the digital twin (DT) needs to be developed for machines like AH, and more specifically for WL. Further, a variety of actions are needed to incorporate into the framework of the DT. The framework needs to support different machines and their predictive journey, which can be different based on their usage and where it is being used. 

What are the means and methods used by the authors to answer the stated question?

This DT is the virtual replica of the physical machines that feed the twins (simulation model) with data from sensors and edge-based algorithms. The algorithms are built using a machine learning (ML) model. The algorithms that are implemented into machines are often called machine logs or virtual sensors. Further, a high-fidelity simulation supports the different force-driven maneuvers of different machine operators. A new co-simulation framework has been developed that integrates the operators’ model of the wheel loader (WL) and its interaction with the power source model, i.e., the drive train, the hydraulics, and the material. By using the simulations and physical machine data, visualizations are built to illustrate the results, which support various departments in providing customers with predictive services.

What is the answer to the research question?

The edge-based virtual sensors align well with their accuracy in predicting different failures in the machines. Furthermore, the results show that the co-simulation model aligns well with measurement data, validating the model’s accuracy in different types of machine operator driving. The integration of virtual sensors, machine logs, simulation, and results visualization paves the way for a successful DT of the machines.

Why is the answer important and for whom specifically?

The results are useful for engineers in product development, sales, and the aftermarket to create services and develop the machines for future generations.

How does the answer inspire future research?

The successful validation of the framework also paves the way for future research to enhance the virtual simulation techniques for WL and AH performances with different types of machine operators. It also paves the way and inspires to improve ML algorithms on the edge and, therefore, create services under the shadow of DTs. 

When? Friday November 14, 14-16
Where? Onsite: D2273 and via zoom

Agenda
14.00-14.10 Welcome and practical information
14.10-14.55 Presentation and discussion: 
Artificial ‘ulama – Analyzing AI-Generated Islamic Theology – Jonas Svensson 
14.55 – 15.05 Coffee break
15.05 – 15.50 Presentation and discussion:  
Socio-Technical Considerations on Inter- and Intra-Organizational Sustainability Data Sharing – Anna Sell  
15.50 -16.00 Sum up and plan for our seminars in December

Abstracts
Artificial ‘ulama – Analyzing AI-Generated Islamic Theology – Jonas Svensson
The presentation provides information on, and preliminary findings from my research project Artificial ‘Ulama, examining how artificial intelligence systems produce Islamic theological content. The study focusses on how modern Large Language Models interpret and respond to prompts based on Islamic texts, concepts, and interpretational frameworks.

The presentation will focus preliminary results on having LLMs translate and interpret the Qur’an, produce views on  inter religious dialogue and producing synthetic data. 

Socio-Technical Considerations on Inter- and Intra-Organizational Sustainability Data Sharing – Anna Sell
In response to new sustainability reporting requirements, such as the EU Corporate Sustainability Reporting Directive (CSRD), companies are increasingly expected to collect and share sustainability data, not only within their own operations but across entire supply chains. Most manufacturing companies operate in multiple supply chains and must adapt to the varying data requirements of each. The cross-organizational scope, unclear data expectations and lack of standardization make sustainability data particularly challenging to work with. Internally, companies’ existing data infrastructures and reporting capabilities are tailored to traditional business data, making them ill-suited for the complex and heterogeneous nature of sustainability data. In this research we explore the paradoxes and barriers that companies must navigate in order to move from compliance-driven reporting to value-creating use of sustainability data.  

When? Thursday November 6, 10-12
Where? Onsite D1172 and via zoom
Registration: No registration needed – just come by

Abstract
Transcribing numbers and Receipts with Generative AI – Nemi Pelgrom
This dissertation investigates the usability of multi-modal language models (MMLMs) as transcription tools, with a focus on their reliability, limitations, and error mechanisms in document parsing tasks.

The work addresses four research questions across three studies. First, the potential of vision-capable generative models for extracting structured information from complex financial documents is evaluated using GPT-4. Tested on 1,000 digital invoices and 1,000 photographic receipts, the model achieved near-perfect accuracy, 99.8\% and 99.5\% respectively, with an additional API-based trial reaching 94.4\%. Second, the capacity of MMLMs to transcribe long numerical strings is explored, showing that GPT-4 and GPT-4o maintain 100\% accuracy up to 75 digits, after which performance drops sharply. Third, systematic error patterns are identified in transcription of random number sequences; mistakes consistently occur in the same positions across repeated runs, and hallucinated digits account for only 23\% of total errors, indicating biases and structured failure modes rather than noise. Lastly, a framework for categorisation of transcription errors is introduced, based on the analysis of 5,502 mistakes across GPT-4o and ARIA.

This reveals three mutually exclusive categories, and a detailed examination of ways to automatically distinguish between them, where the Ratcliff/Obershelp similarity was found to be highly useful. Together, these findings demonstrate that state-of-the-art MMLMs can already be deployed in production settings where accuracy and scalability are critical, while also providing systematic methods for diagnosing their weaknesses and guiding future model development.

When? Friday 24 October,14-16
Where? Onsite: D1172 and via zoom
Registration: Please sign up for the seminar via this link, https://forms.gle/m3nRqxaQmnv8zETb6 by 20 October.

Agenda
14.00-14.10 Welcome and practical information
14.10-14.55 Presentation and discussion: 
The Self-Healing Hypochondriac: Confessions of an AI Nerd: From Skeleton Avatar Technology to medical insights and future directions in AI for eHealth – Welf Löwe
14.55 – 15.05 Coffee break
15.05 – 15.50 Presentation and discussion:  The Journey and Lessons of Emerging Technologies in Education: Insights from the European Project Exten.(D.T.)² – Alisa Lincke
15.50 -16.00 Sum up and plan for our seminars in November

Abstract
The Self-Healing Hypochondriac: Confessions of an AI Nerd
From Skeleton Avatar Technology to medical insights and future directions in AI for eHealth – Welf Löwe

This talk introduces our Skeleton Avatar Technology (SAT), an AI-based approach to video motion analysis. We will present ongoing research, recent results, commercialization efforts, and future directions, highlighting how SAT can provide valuable medical insights and transform applications in healthcare and elderly care. In addition, we will briefly outline our other research activities in AI and eHealth.

The Journey and Lessons of Emerging Technologies in Education: Insights from the European Project Exten.(D.T.)² – Alisa Lincke

This seminar introduces the Exten.(D.T.)² project (Extending Design Thinking with Emerging Digital Technologies), a Horizon Europe / Innovate UK initiative (2022–2025). The project enhances Design Thinking in schools by integrating technologies such as AI, augmented reality, robotics, 3D printing, with a main focus on authorable learning analytics and dashboards. Implemented in six European countries, it explores both the opportunities and challenges of using these tools to foster creativity, collaboration, problem solving, and digital literacy. Personal experiences from European research projects will be shared, with reflections on lessons learned in cross-national collaboration.

Agenda
When? Friday 22 August,14-15
Where? Onsite: D1172 and via zoom
Registration: Please sign up for the seminar via this link: https://forms.gle/KsDUyvyffJdk8wZN9 by 20 august.

Abstract

Animating maths and physics – Alexander Gustafsson
In this presentation, I will share insights from running my YouTube channel, which focuses on animated content in physics and mathematics. With currently 150,000–200,000 views per month and around 35,000 subscribers, the channel has grown into a prominent platform for this type of content.

The talk will be accessible to a broad audience, in line with the channel’s overall philosophy: to make complex topics engaging and understandable. Alongside physics, mathematics and coding, the presentation also touches on education, music, and occasionally art.