The study aimed to present an integrated model for evaluation of big data (BD) challenges and analytical methods in recommender systems (RSs). The proposed model used fuzzy multi-criteria decision making (MCDM) which is a human judgment-based method for weighting of RSs’ properties. Human...

The study aimed to propose a judgment-based evaluation model for usability evaluating of interactive systems. Human judgment is associated with uncertainty and gray information. We used the fuzzy technique for integration, summarization, and distance calculation of quality value judgment. The...

Ezen jegyzetet elektronikus jegyzetnek szánjuk. A lineáris programozási feladatok CPLEX LP kódját sok feladat esetében megadjuk. Ezek a kódok változtatás nélkül futtathatóak, megkönnyítve az eredmények reprodukálását. Ez a módszer a tanulást megkönnyíti, viszont a jegyzet...

The COVID-19 pandemic has resulted in a widespread shift to online education around the world and in Hungary, too. Educational institutions from kindergartens to universities were forced to adapt rapidly to this new situation, when the space of education moved from classrooms to online video...

Security threats, among other intrusions affecting the availability, confidentiality and integrity of IT resources and services, are spreading fast and can cause serious harm to organizations. Intrusion detection has a key role in capturing intrusions. In particular, the application of machine...

Mining association rules are one of the most critical data mining problems, intensively studied since their inception. Several approaches have been proposed in the literature to extend the basic association rule framework to extract more general rules, including the negation operator. Thereby,...

Technology advancements are constantly focused at enhancing the quality of life for its consumers. A similar observation may be made about natural language processing. In recent years, chatbots, or conversational systems, have grown in popularity due to their ability to converse with humans....

Exercise generation is a subject worthy of investigation. In our previous papers, a new multi-objective harmony search metaheuristic algorithm called EGAL was presented, designed to address a widely recognised problem: generating diverse exercises to measure students’ knowledge on various...

In modern industries, there is a significant repository of sensor data, which contains a large amount of information. Unfortunately, this rich source of information is undervalued and underutilized, and its full potential is not fully exploited by modern day manufacturers. In the Industry 4.0...