Boštjan Šumak

Boštjan Šumak
University of Maribor | UM · Institute of Informatics

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66
Publications
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1,799
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Publications

Publications (66)
Article
Full-text available
Qualitative data analysis (QDA) tools are essential for extracting insights from complex datasets. This study investigates researchers’ perceptions of the usability, user experience (UX), mental workload, trust, task complexity, and emotional impact of three tools: Taguette 1.4.1 (a traditional QDA tool), ChatGPT (GPT-4, December 2023 version), and...
Chapter
Web accessibility, crucial for ensuring equitable access to online information for users with diverse needs, is an essential aspect of website quality. This chapter provides empirical insight into evaluating web accessibility within healthcare websites. Using an automatic evaluation tool, this study assessed the official entry websites of 58 Health...
Article
Full-text available
Software evolution is driven by changes made during software development and maintenance. While source control systems effectively manage these changes at the commit level, the intent behind them are often inadequately documented, making understanding their rationale challenging. Existing commit intent classification approaches, largely reliant on...
Chapter
Full-text available
In this chapter, we investigate the complex process of analyzing and understanding the factors that influence individuals’ access to and participation in digital education within the Higher Education context. While the digital transformation in Higher Education Institutions (HEI) has produced numerous benefits for both students and educators, it ha...
Technical Report
Full-text available
This report discusses the findings and recommendations of the ADORE project, which focuses on integrating accessibility training into the curricula of higher education programmes, specifically in the field of communication studies. The report presents the culmination of the project's efforts by connecting to its five Intellectual Outputs (IOs). The...
Article
Full-text available
This study aimed to observe the impact of eight explainable AI (XAI) explanation techniques on user trust and satisfaction in the context of XAI-enhanced learning analytics while comparing two groups of STEM college students based on their Bologna study level, using various established feature relevance techniques, certainty, and comparison explana...
Conference Paper
Commits represent an essential part of software development practices, serving as the means for collaboration and management of software changes made to a software project’s codebase. Changes are necessary for the survival of software, for instance, to fix faults, address security vulnerabilities, meet new functional requirements, and improve softw...
Article
Full-text available
Despite efforts to promote digital inclusion for all, individuals with disabilities continue to experience a significant digital divide. Developing usable and accessible solutions also demands conducting user-based testing with real end users, particularly for users with disabilities, to detect and address real problems and barriers they experience...
Article
Full-text available
During maintenance, software systems undergo continuous correction and enhancement activities due to emerging faults, changing environments, and evolving requirements, making this phase expensive and time-consuming, often exceeding the initial development costs. To understand and manage software under development and maintenance better, several mai...
Conference Paper
A common practice in software development is to include linters, static analysis tools that warn developers about potential issues in the code, in the software quality assurance process. Actionable warnings generated by linters upon violations of defined rules help detect, resolve, and reduce coding errors, quality flaws, code style inconsistencies...
Chapter
Full-text available
This paper analyzes the shortest path problem (SPP) in social networks, based on the investigation and implementation of different methods on a simulated example. The objectives of the paper include identification of the most commonly used methods for finding the shortest path in a social network as a strategic attempt to speed the search of networ...
Conference Paper
During the lifetime of a software project, various modifications are performed to the source code to correct, adapt, and perfect software under maintenance. Using source code management tools that effectively facilitate the management of software changes, the committed changes are tracked and accompanied by short messages from committers communicat...
Preprint
Full-text available
Learning analytics (LA) is data collection, analysis, and representation of data about learners in order to improve their learning and performance. Furthermore, LA opens the door to opportunities for self-regulated learning in higher education, a circular process in which learners activate and sustain behaviours that are oriented toward their perso...
Technical Report
Full-text available
PROJECT PARTNERS: The European Commission support for the production of this publication does not constitute an endorsement of the contents which reflects the views only of the authors, and the Commission cannot be held responsible for any use which may be made of the information contained therein.
Technical Report
Full-text available
The main objective of Project Result 2 (PR2) was to carry out the mapping of university programmes in fields related to communication where accessibility training can be implemented. The results of the performed activities provide an overview of the different subjects and specific modules covered in this domain, focusing on the university partners...
Conference Paper
Every change to a software repository (i.e., commit) is described by a software developer committing the change with a message written in natural language, indicating the purpose of the change. Automatically inferring the change intents of commits helps understand and manage software projects and their development. This paper presents and evaluates...
Article
Full-text available
Intelligent user interfaces (IUI) are driven by the goal of improvement in human–computer interaction (HCI), mainly improving user interfaces’ user experience (UX) or usability with the help of artificial intelligence. The main goal of this study is to find, assess, and synthesize existing state-of-the-art work in the field of IUI with an additiona...
Conference Paper
When developers collaborate on a software project, the style of the code should be consistent across the codebase. However, as developers do not always concur on code style practices, achieving a consensus can be burdensome. Even when code style guidelines are defined for a project, developers often have difficulties adhering to them. Additionally,...
Conference Paper
Linters are static analysis tools supporting developers by automatically detecting possible code errors, bad coding practices, violations of coding conventions, and styling issues while offering actionable advice on how to resolve these concerns to prevent inconsistencies in the codebase, errors, and degrading software quality. They are especially...
Conference Paper
Samoupravljana identiteta je nastajajoč, decentraliziran pristop upravljanja identitet, ki omogoča uporabnikom, da v celoti nadzorujejo in upravljajo svojo digitalno identiteto z uporabo digitalne denarnice, s čimer se poveča zaupanje, zasebnost in varnost. V sklopu prispevka predstavljamo raziskavo, v kateri smo preko analize SSI digitalnih denarn...
Article
Full-text available
To equip computers with human communication skills and to enable natural interaction between the computer and a human, intelligent solutions are required based on artificial intelligence (AI) methods, algorithms, and sensor technology. This study aimed at identifying and analyzing the state-of-the-art AI methods and algorithms and sensors technolog...
Conference Paper
Full-text available
On modern websites, images, on average, account for about half of the website size. Hence, they are very performance-consuming if not well optimized, increasing page transfer size and page load time. However, existing studies have revealed that image optimization is lacking on most websites. A performance-based measurement study of various automati...
Conference Paper
Full-text available
For websites, keeping perceived loading times short is immensely important for ensuring a positive user experience and overall website success. As images, on average, represent almost half of website total content size, they are commonly considered as resources where optimization opportunities are not utilized to the fullest, thus, affecting web pe...
Conference Paper
Full-text available
Web performance testing with tools such as Google Lighthouse is a common task in software practice and research. However, variability in time-based performance measurement results is observed quickly when using the tool, even if the website has not changed. This can occur due to variability in the network, web, and client devices. In this paper, we...
Chapter
Full-text available
Well organized data contributes extensively to the classification possibilities and quality of Knowledge Management. XML schemas play an important role in data organization activities, and provide basic foundations for companies and organizations dealing with large amounts of data. In times where knowledge represents the greatest advantage in a com...
Article
Full-text available
Advancements in protocols, computing paradigms, and electronics have enabled the development of wireless sensor networks (WSNs) with high potential for various location-based applications in different fields. One of the most important topics in WSNs is the localization in environments with sensor nodes being scattered randomly over a region. Locali...
Article
In response to recent criticism of the usefulness of the construct of usability, we investigated the relationships between measures of perceived usability and the components of a modified version of the Technology Acceptance Model (mTAM) – Perceived Usefulness (PU) and Perceived Ease-of-Use (PEU). In three surveys, respondents used SUS, UMUX-LITE a...
Conference Paper
This paper presents a preliminary review of jobs, skills and competencies that have been identified as needed for implementation of Digital Accessibility. The results indicate that new professions have been created to handle Digital Accessibility in organizations, as well as existing professions have changed by its introduction. Best practices of D...
Conference Paper
The paper addresses and analyses Slovenian specifics in comparison with other European cities, trying to decide whether Slovenia is a suitable market for smart cities. Analyses were made based on two existing researches. The first one included the citizens’ opinions, based on a survey carried out by the European Statistical Office Eurostat, while t...
Article
Področje optimizacije poslovnih procesov je pomembna a slabo podprta domena v slovenskih podjetjih, zato smo v prispevku naslovili to področje ter se osredotočili na analizo in predstavitev orodij, ki nudijo podporo optimizaciji procesov. Cilj prispevka je analizirati in predstaviti različna orodja, ki uporabnikom nudijo podporo pri razumevanju in...
Conference Paper
Quality assurance in software development is one of the key processes in any organization, where Information Technology systems impact the realization of business processessignificantly. Fordigitalization and informatizationof business processes, organizations need to have a clear notion of their processes, which can be achieved by focusing on the...
Article
Standard computer input devices such as a mouse or a keyboard are not well suited to the needs of users with severe motor disabilities in their interaction with standard computer interfaces. The emergence of contemporary human computer interfaces has allowed for the development of innovative solutions for hands-free Human-Computer Interaction (HCI)...
Conference Paper
In the digital age, websites constitute an important source of gathering information. The website owners are responsible for providing the accessibility of their websites to all target groups of end users. This means that all web users can perceive, understand, navigate, interact and contribute to the Web. To ensure web accessibility, many concepts...
Conference Paper
Full-text available
The quality of Information Technology (IT) solutions can be measured on several levels, among them, focusing on data, software, as well as finally - the human user. Since IT solutions are one of the essential elements used in actual business or production processes, the quality of the business process and its validation is one of the important high...
Conference Paper
Full-text available
Contrary to the increasing popularity of JavaScript programming language in the field of web application development, the numerical expression of evidence about the quality of solutions developed in this language is still not reliable. Based on the preliminary literature review, which is the main subject of this paper, this area has not yet been fu...
Article
Full-text available
E-business technology is becoming one of the most important global markets where e-business solutions will have to adapt to new technologies. The main objective in this study was to synthesize existing knowledge in the field of e-business technology acceptance and to understand differences in Technology Acceptance Model (TAM) related causal effect...
Article
With the spread of new educational technology such as the interactive whiteboard (IWB) teachers, as potential users, need to adapt their teaching in order to successfully utilize it. Despite considerable efforts in motivating teachers to use new educational technology, there are mixed feelings about whether to accept and use this technology in the...
Article
An introduction of an innovative technology such as interactive whiteboard (IWB) in classrooms offers new opportunities for improving educational practices. Every new educational technology has to be adopted by teachers that have to adapt it in a creative way in order to fully utilize IWB's potential in instructions. The adoption is a result of var...
Conference Paper
The structure and content of XML schemas impacts significantly the quality of data respectively documents, defined by XML schemas. Attempts to evaluate the quality of XML schemas have been made, dividing them into six quality aspects: structure, transparency and documentation, optimality, minimalism, reuse and integrability. XML schema quality inde...
Conference Paper
Contemporary information and communication technology is accelerating development of new and innovative ways for disseminating and sharing health information and knowledge between different healthcare institutions and users. Lately, several initiatives and technology innovations were introduced in the field of medical informatics. Researchers and p...
Article
Full-text available
In XML Schema development, the quality of XML Schemas is a crucial issue for further steps in the life cycle of an application, closely correlated with the structure of XML Schemas and different building blocks. Current research focuses on measuring complexity of XML Schemas and mainly do not consider other quality aspects. This paper proposes a no...
Conference Paper
Few years ago, retailers started to employ self-service checkout terminals providing customers a choice to scan the barcodes on their own items and complete the purchase process without an interaction with retailer's staff. This study aimed to investigate factors which can have a significant impact on user's decision about how and when they will us...
Conference Paper
Quality measurements of XML schemas are difficult to perform objectively, providing all aspects of quality demands. However, an approximate evaluation of XML schema's quality and validation, whether a higher version of an XML schema standard is in fact an improvement, is useful information for XML schema users. The paper addresses who are the users...
Article
This paper analyses the influence of different tool types (visual or textual) on a developer's perception of efficiency during XML Schema development. We conducted a controlled experiment that focused on discovering which XML Schema development tool type enables better efficiency and also engenders a friendlier environment for developers while deve...
Article
The structure and content of XML schemas, important and widely used document definitions, has a significant influence on the quality of XML data and XML technologies in general, therefore the quality of XML Schemas and accurate assessment of the quality is a fundamental research challenge in all fields of XML application. A good quality estimation...
Conference Paper
Using XML data was initially applied in electronic data interchange and e-business, however the application of XML has been moved to several other fields. We nominate those fields of use as XML domains and presume that subsets of their characteristics significantly differ from one another. In this paper, we present the list of identified XML domain...
Conference Paper
E-business has become a popular way of conducting business in the last decade or two, when economic and social world evolved through progress in Internet and Information and Communication Technologies (ICT). In order to succeed, e-business solutions must meet different requirements of different stakeholders, and e-business solution developers and p...
Article
Existing literature in the field of e-learning technology acceptance reflects a significant number of independent studies that primarily investigate the causal relationships proposed by technology acceptance theory, such as the technology acceptance model (TAM). To synthesize the existing knowledge in the field of e-learning technology acceptance,...
Article
Full-text available
Advancements in web technologies and the increased influence of the World Wide Web are leading to new and innovative ways of learning. New e-learning system technologies and services enable activities that allow users to be active learners, actively participating in the on-line learning process. When an e-learning system with new technologies and s...
Article
There are different factors that can influence a learner's decision on how and when they will use a particular, innovative e-learning technology. In the existing literature, there are many studies that deal with the identification of factors and their impact on a user's acceptance of e-learning technology. This paper demonstrates the results of a m...
Conference Paper
When users are presented with a new technology or service, a number of factors influence their decision about how and when they will use it. To measure how students and teachers are going to accept and use a specific e-learning technology or service, an appropriate instrument is needed. In this paper common theories that can be used for measuring s...
Conference Paper
Modern e-learning systems are providing technologies and services enabling students to do more than just receive learning materials - they are no longer passive learners and can actively participate and contribute in content creation. This study examined the importance of Web 2.0 technologies and services provided by an e-learning system from the s...
Article
This paper demonstrates the results of our research activities in which we validated state-of-the-art theory of technology acceptance (Unified Theory of Acceptance and Use of Technology-UTAUT) in the context of a specific e-learning system-Moodle. This research was performed because there is little research reported in the area of e-learning accept...
Conference Paper
Full-text available
Assuring quality IT solutions demands assuring quality in all aspects of software development process. For this we need well-formed methods with suitable metrics with which we can verify if a process, software product, software component, software artifact or other part of possible solution meets defined quality characteristics. XML Schemas and cor...
Conference Paper
Full-text available
Development and maintenance of information systems often face integration and re-factoring challenges; therefore diminishing similar difficulties is stressed within this paper. Research was based on literature review of several integrability parameters, describing an information system, where the goal was finding optimal specifications that need to...
Article
Full-text available
The transition to electronic business has brought many changes in the business process. First steps in making business on the web have been web services, however the requirements for realization of multiple collaborations and automations are no longer satisfied simply by web services. New, more complex technologies for describing business processes...
Article
Full-text available
The purpose of this article is to highlight the limitations and drawbacks of existing knowledge about e-service quality and e-service user acceptance. To overcome these limitations we will propose some solutions. An extensive review of relevant literature has shown that a lot of research has already been conducted in this field. However, there is s...
Article
Full-text available
Assuring quality IT solutions demands assuring quality in all aspects of software development process. For this we need well-formed methods with suitable metrics with which we can verify if a process, software product, software component, software artifact or other part of possible solution meets defined quality characteristics. XML Schemas and cor...

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