DISA

Centre for Data Intensive Sciences and Applications

Welcome to PhD-seminar March 2024

2024-02-13

When? Friday March 1st 14-16
Where? Onsite: B1009 at Linnaeus University in Växjö and online
Registration: Please sign up for the PhD-seminar via this link https://forms.gle/1KCLvBZQph4Vs1cR7 by February 28th (especially important if you plan on attending onsite so we have fika for everyone)

14.00-14.10 Welcome and practical information from Welf Löwe
14.10-14.55 Presentation and discussion: Leveraging machine learning and large language models to map source code as natural language to architectural modules. – Nils Johansson, Industry PhD-student at Volvo CE
14.55 – 15.05 Coffee break
15.05 – 15.50 Presentation and discussion – Towards a Probabilistic Interactive Video Training Tool for Emergency Medical Services – Romain Herault, PhD-student at LNU
15.50 -16.00 Sum up and plan for our next seminar on April 5th

Abstracts

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FAACS 2024 – Call for Research Papers

2024-01-30

The 8th International Workshop on Formal Approaches for Advanced Computing Systems (FAACS 2024), co-located with the 21st IEEE International Conference on Software Architecture (ICSA 2024), will be held in IIIT Hyderabad, India June 4-8, 2024.

Important Dates:
– Submission Deadline: February 18, 2024
– Notification of Papers: March 17, 2024
– Camera Ready: March 31, 2024
– Workshop Date: June 4 – 5, 2024

Motivation and Scope
Cutting-edge technologies, infrastructures, and computational paradigms such as digital twin, cloud, fog, edge computing, IoT, digitalization, Industry 5.0, and cyber-physical systems are changing how data and services are delivered and used. Such systems have a significant and elaborate societal impact, making it paramount to guarantee essential qualities of the delivered product, such as dependability, reliability, safety, and availability. As new paradigms become pervasive in our everyday lives, new challenges also emerge in dealing with uncertainty, untrustworthiness, and information loss, affecting the software life cycle in different phases. Ensuring critical qualities requires a joint effort in devising advanced software architecture designs by the software architecture community and formal modeling and verification approaches by the formal methods community.

The main goal of the workshop is to foster integration between formal methods and software architecture promoting new connections and synergies between the two communities to address the challenges of the upcoming generation of computing systems. Aligned with the theme of the ICSA 2024, we welcome contributions on the potential and risks of generative AI in developing advanced software architectures and ensuring qualities like dependability, reliability, safety, and availability through formal modeling and verification.

Topics of Interest include (but are not limited to) the following:

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Welcome to Higher Research Seminar 240216

2024-01-29

When? Friday February 16th 14-16
Where? Onsite: D1140 at Linnaeus University in Växjö and online
Registration: Please sign up for the PhD-seminar via this link https://forms.gle/FUV4yzLXLTwiSvQe9 by February 14th (especially important if you plan on attending onsite so we have fika for everyone)

14.00-14.10 Welcome and practical information from Welf Löwe
14.10-14.55 Presentation and discussion: Using Virtual Reality to gain insights – Aris Alissandrakis
14.55 – 15.05 Coffee break
15.05 – 15.50 Presentation and discussion – Cloud and HPC – Morgan Ericsson
15.50 -16.00 Sum up and plan for our next seminar on March 15th

Abstracts
Using Virtual Reality to gain insights – Aris Alissandrakis

This seminar will give a brief overview of recent work (2017-now) conducted by the VRxAR Labs research group.

The evolution of our immersive analytics system that went from “simple” data exploration to supporting hybrid asymmetric collaboration will be presented.
The focus will be on the motivations and decisions that informed the direction of this research, and the methodological approaches used to make sure that the system both a) did what it was supposed to and b) was perceived favorably by its users.

Given that VR is better experienced and understood by seen in motion, anyone interested in this is encouraged to check out our video demonstrations on [https://vimeo.com/vrxar].

Cloud and HPC – Morgan Ericsson

We’ll start by discussing what HPC, Cloud computing and related terms mean. We’ll then discuss how and when you should use a cloud environment, such as CSCloud, for HPC. The talk will illustrate the important concepts using CSCloud and discuss, e.g., virtual machines and networks, containers, orchestration, etc.

Welcome to PhD-seminar February 2024

When? Friday February 2th 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/H9oqD7duf23ibLfv7 by January 31st (especially important if you plan on attending onsite so we have fika for everyone)

14.00-14.10 Welcome and practical information from Welf Löwe
14.10-14.55 Presentation and discussion: Object Identification in Land Parcels using a Machine Learning Approach – Niels Gundermann, Industry PhD student at Data Experts
14.55 – 15.05 Coffee break
15.05 – 15.50 Presentation and discussion – Development of Visual Learning Analytic Tools to Explore Performance and Engagement of Students in Both Primary/Secondary and Higher Education – Zeynab Mohseni, PhD-student
15.50 -16.00 Sum up and plan for our next seminar on February 2nd

Abstracts

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Welcome to Higher Research Seminar 230119

2024-01-04

When? Friday January 19th 14-16

Where? Onsite: D1172 at Linnaeus University in Växjö and online

Registration: Please sign up for the PhD-seminar via this link https://forms.gle/e5GiPpZpyc7UBznv8 by January 17th (especially important if you plan on attending onsite so we have fika for everyone)

14.00-14.10 Welcome and practical information from Welf Löwe
14.10-14.55 Presentation and discussion: Virtual Ecosystems for Smart Sustainable City-districts – an architecture perspective – Jesper Andersson
14.55 – 15.05 Coffee break
15.05 – 15.50 Presentation and discussion – Self-adaptation: basic principles and industrial usage – Danny Weyns
15.50 -16.00 Sum up and plan for our next seminar on February 16th

Abstracts

Virtual Ecosystems for Smart Sustainable City-districts – an architecture perspective – Jesper Andersson

This talk will discuss architectural issues concerning establishing and operating a digital ecosystem. Digital ecosystems are becoming a foundation for value streams in multiple businesses and domains. The case we study is a smart-district platform, which shares challenges with the Smart-city.

This talk focuses on two concerns, the ecosystem’s platform architecture and architecture barriers to establishing and operating an ecosystem. We characterize sustainable product and service ecosystems in a smart-district ecosystem and discuss specific design alternatives. In a design process, certain architectural barriers impede ecosystem establishment and operation. We describe some categories with concrete examples from the case. In connection to the barriers, we describe specific architectural governance challenges and discuss some possible solutions. We discuss several avenues for future platform architecture and governance research.

Self-adaptation: basic principles and industrial usage – Danny Weyns
 
Self-adaptation enables a software system to reason about itself at runtime and adapt itself to realise a set of quality goals. Self-adaptation has been widely used in the software industry, but not necessarily known under the term self-adaptation. In this talk, I motivate the use of self-adaptation, outline the basic principles of self-adaptation, and report the results of a large-scale survey with practitioners on the use of self-adaptation in industry. 

Welcome to PhD-seminar January 2024

2024-01-02

When? Friday January 12th 14-16
Where? Onsite: B1006 at Linnaeus University in Växjö and online
Registration: Please sign up for the PhD-seminar via this link https://forms.gle/YsyLzBd7K6tL1hmX6 by January 10th (especially important if you plan on attending onsite so we have fika for everyone)

14.00-14.10 Welcome and practical information from Welf Löwe
14.10-14.55 Presentation and discussion: Senadin Alisic, PhD student Combitech
14.55 – 15.05 Coffee break
15.05 – 15.50 Presentation and discussion – Improving access to digital archives pertaining to the Sámi with HTR and automatic subject indexing, Johannes Widegren, PhD in Computer and Information Science at the Department of Cultural Sciences
15.50 -16.00 Sum up and plan for our next seminar on February 2nd

Abstracts

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Welcome to Higher Research Seminar with Italo Masiello on November 17th

2023-10-27

Welcome to the last Higher Research Seminar of the year!

  • When? November 17th 14-15
  • Where? In B1006, Växjö or online

Title: Technology integration is about trust

Abstract:

We started our research project with a baggage of expectations about what we could do with data in compulsory education. Even greater expectation was reflected by the school principals we were working with. “Can we see this? And can we see that?”: asked the principals.

Two years after we started the project, we are standing on the finish line but have not crossed it yet. This means that we have not been able to “really” analyze (any which way) the data to create useful visualization dashboards. But we have learned a hack of a lot!
1. No data standards on site!
2. Digital inheritance is enormous!
3. Everyone develops as they please!
4. Competences are not at the top!
5. GDPR scares the “#€% out of everyone!
6. Local IT infrastructure is not in place!
7. OMG how many hours of dialog it took to get where we are today!
8. It is not about technology. It is about trust!

I will show you what we can do with the data, at this point in time only theoretically. I will also show you the technical infrastructure that Artemis, my doctoral student working with the data, has setup for integrating multiple datasets coming from different companies and schools. If you have experience of working with educational data from the primary school sector, I would also like to hear from you about ideas for future direction.

Welcome to our November PhD-seminar

2023-10-12

When? Friday November 3rd 14-16
Where? Onsite: D1140 at Linnaeus University in Växjö and online
Registration: Please sign up for the PhD-seminar via this link https://forms.gle/txd4g2Un1qfYSvr2A by November 1st (especially important if you plan on attending onsite so we have fika for everyone)

Agenda
14.00-14.10 Welcome and practical information from Welf Löwe
14.10-14.55 Presentation and discussion: Unlock the Power of Mobile Robotics with AI based Vision – Daniel Nilsson, PhD student at Kuka Nordic
14.55 – 15.05 Coffee break
15.05 – 15.50 Presentation and discussion – AI and data literacy: What knowledge and skills are needed in a data-driven society? – Johanna Velander, PhD student UPGRADE and WASP-HS
15.50 -16.00 Sum up and the Big Data Conference and plan for our next seminar on January 12th

Abstracts
Unlock the Power of Mobile Robotics with AI based Vision – Daniel Nilsson, PhD student at Kuka Nordic
This research project proposes a transformation of KUKA’s AMRs into multifunctional agents using the vehicles existing sensors and AI. In the current solutions Autonomous Mobile Robots (AMRs) primarily serve as single-function devices, enabling driverless transportation between various points within a facility. At the same time automation of processes such inventory tracking tend to involve additional investments in additional systems and costly hardware installations, adding to the financial dilemma when striving to transform the operation toward industry 4.0. By allowing AMRs to manage transportation, inventory tracking, and safety compliance simultaneously, such advancement would significantly add to the AMR’s value in production environments.

AI and data literacy: What knowledge and skills are needed in a data-driven society? Johanna Velander, PhD student UPGRADE and WASP-HS
Uncovering patterns and trends in vast, ever-increasing quantities of data has been enabled by different machine learning methods and techniques used in many of the applications that we use in our daily lives. Permeating many aspects of our lives and influencing our choices, development in this field continues to advance and increasingly impacts us as individuals and our society. The risks and unintended effects such as bias from input data or algorithm design have recently stirred discourse about how to inform and teach about AI in K-12 education. As AI is a new topic not only for pupils in K-12 but also for teachers, new skill sets are required that enable critical engagement with AI.

In this presentation, I will talk about my PhD project, which sits at the intersection of computer science and teacher education. In a recent study deploying a Learning Analytics plugin at some LNU courses students’ thoughts, attitudes and emotions were investigated when engaging with their own data (collected by the LMS Moodle). Results revealed a low awareness of data collection and potential data-driven practices and also worries about how this data could be used and who could have access to it. Following these insights and according to my Ph.D. affiliation with UPGRADE and WASP-HS I have continued to investigate how awareness and knowledge of AI concepts, applications and potential ethical concerns often referred to as AI literacy can be taught at a K-12 level in order to inspire future data scientists and to enable equal participation in a digital data-driven society according to a critical literacy perspective that empowers learners to act on and find alternatives to issues present in current AI practice.

 

Welcome to our October PhD-seminar

2023-09-15

When? Friday October 6th 14-16
Where? Onsite: D1140 at Linnaeus University in Växjö and online
Registration: Please sign up for the PhD-seminar via this link https://forms.gle/dQLHkqx9ctt2ws82A by October 3rd (especially important if you plan on attending onsite so we have fika for everyone)

Agenda
14.00-14.10 Welcome and practical information from Welf Löwe
14.10-14.55 Presentation and discussion: Bridging the Gap: A Hybrid Recommendation System for E-Commerce Cold Start Challenges – Kailash Chowdary Bodduluri, Industry PhD-student HL Design
14.55 – 15.05 Coffee break
15.05 – 15.50 Presentation and discussion – Continuous Performance Management of Business Processes via Digital Twin and Model-Driven Architecture – Samuele Giussani, PhD student at LNU
15.50 -16.00 Sum up and plan for our next seminar on November 3rd

Bridging the Gap: A Hybrid Recommendation System for E-Commerce Cold Start Challenges Kailash Chowdary Bodduluri, Industry PhD-student HL Design

Abstract: In the dynamic landscape of e-commerce, effective recommendation systems play a pivotal role in enhancing user experiences and boosting sales. However, the ubiquitous cold start problem has long been a challenge in implementing recommendation systems, particularly for businesses like HL Design that provide smart webshops to e-commerce customers. To address this challenge, extensive research was conducted through a systematic literature review on hybrid recommendation systems in the e-commerce domain. This review aimed to identify existing algorithms in the literature and uncover potential areas for adaptation. The literature review revealed some existing research gaps in the context of dealing with cold start issues. To bridge these gaps, a novel hybrid recommendation system was developed. This system leverages product images and descriptions, identifies similar products based on user sessions, and incorporates historical sales data. By combining these diverse data sources, the developed system offers innovative solutions to tackle the persistent cold start challenges in recommendation systems. This seminar will delve into the journey of identifying these research gaps, developing the hybrid recommendation system, and exploring its effectiveness in addressing cold start issues. It promises to be an enlightening discussion for those navigating the complex realm of recommendation systems in e-commerce.”

Continuous Performance Management of Business Processes via Digital Twin and Model-Driven ArchitectureSamuele Giussani, PhD student at LNU

Business Process Management (BPM) deals with administrating the chains of events, activities, and decisions that add value to an organization. It is of particular interest to assess the business process performance in a continuous way, in order to gather as much information as possible to allow informed decisions in the value chain.

However, organizations are often complex and driven by several business-critical processes, that should be continuously monitored, evaluated, and managed to deliver value-added products and services to customers. To this end, we employ a Digital Twin of the Organization (DTO), which is a virtual representation of the organization that includes all the actors and activities implementing the business processes, to estimate and analyze the relevant Key Performance Indicators (KPIs).

The notation commonly adopted in BPM is distant from what a DTO can use to produce its results, so we introduce Biz2Sim, a model transformer tool that leverages the Model-Driven Architecture (MDA) approach to obtain simulation models from the Business Process Model and Notation (BPMN). By incorporating both Biz2Sim and the DTO in the traditional BPM lifecycle, performance assessment can be performed with real-time data and with an increased degree of automation.

Welcome to the Higher Research Seminar in Computer Science on September 22nd

2023-09-06

Professor Mauro Caporuscio will give a seminar on September 22nd 14-15 about Green Software by Design. It is possible to attend the seminar either onsite or online. If you are interested in joining please send an email to diana.unander@lnu.se.

Abstract
Despite the media interest in sustainability, the public is still unaware that software, including digital assistants, cryptocurrencies, audio/video streaming services, finances, and games, are predicted to account for as much as 14% of the total worldwide carbon footprint in the next decade. Indeed, all software consumes electricity. In general, people think electricity is clean. Still, since most electricity is produced through burning fossil fuels (e.g., coal, oil, and natural gas), in practice, electricity is the single most significant cause of carbon emissions worldwide. Further, all the devices we use for running software (from our smartphones/computers to network appliances, and to cloud infrastructures) produce carbon when manufactured and disposed of (once they reach the end of life). The two most effective ways to reduce the carbon emissions of software are through Energy efficiency, and Hardware longevity. Unfortunately, current software development projects usually treat these concerns as an afterthought: a desirable quality to be considered if and only if other stakeholder- and economy-centered requirements (e.g., performance, business needs) have been successfully addressed. To face this unsustainable trend, we need a paradigm shift in the way we engineer and operate software systems. Indeed, the software shall be designed from the foundation to be green.

The aim of this talk is to bring these aspects to your attention and to hint at future research directions toward the reconciliation of three different and typically conflicting aspects: (1) efficiency: the ability to limit energy consumption, (2) longevity: the ability to live long and prevent hardware obsolescence, and (3) efficacy: the ability to meet the users’ expectations.