Igor Tomicic

University of Zagreb · Artificial Intelligence Laboratory

The classification of human face shapes, a pivotal aspect of one’s appearance, plays a crucial role in diverse fields like beauty, cosmetics, healthcare, and security. In this paper, we present a multi-step methodology for face shape classification, harnessing the potential of transfer learning and a pretrained EfficientNetV2S neural network. Our a...

The rise of online transactions has led to a corresponding increase in online criminal activities. Account takeover attacks, in particular, are challenging to detect, and novel approaches utilize machine learning to identify compromised accounts. This paper aims to conduct a literature review on account takeover detection and user behavior analysis...

This paper presents a comprehensive overview of Convolutional Neural Networks (CNNs) in the context of face recognition. By analyzing 150 research papers, we investigate major publication channels, temporal trends, prevalent CNN models, primary data sets, accuracy levels, primary research focuses, and future prospects for improving CNN-based facial...

Numerous advanced methods have been applied throughout the years for the use in Network Intrusion Detection Systems (NIDS). Among these are various Deep Learning models, which have shown great success for attack classification. Nevertheless, false positive rate and detection rate of these systems remains a concern. This is mostly because of the low...

Cognitive agents are artificial intelligence systems that are able to communicate in a way that is as much as possible acceptable to humans. Technologies like natural language processing (NLP), text to speech (TTS), speech to text (STT) and motion capture (MoCap) are usually applied to provide such an interface. In this work-in-progess paper we pre...

This paper proposes an open ontology for self-sustainable human settlements in an effort to set the common language for modelling self-sustainable systems and address the issues regarding heterogeneity of physical devices, protocols, software components, data and message formats and other relevant factors, which proved to be unavoidable in implemen...

In the field of face biometrics, finding the identity of a person in an image is most researched, but there are other, soft biometric information that are equally as important, such as age, gender, ethnicity or emotion. Nowadays, ethnicity classification has a wide application area and is a prolific area of research. This paper gives an overview of...

In this paper, the question on the expediency of checking the model, the model checking method is applied to, is discussed. To this end, corresponding technique has been proposed. Named technique is based on differentiation between the concepts of analytical plane of model perception and the concepts of corresponding implementation plane. The techn...

In the past two decades ambient intelligence (AmI) has been a focus of research in different fields and from different points of view. It can be defined as an electronic environment consisting of devices capable of recognising people presence and responding in a certain way. The security and privacy in these kind of environments is still a challeng...

This chapter provides an overview of modeling techniques for large-scale systems in the Internet of Things (IoT) environment with a special accent on smart self-sustainable cities. The authors present a framework for modeling Large-Scale Multi-Agent Systems (LSMASs) including a graphical modeling language, and a tool, that aim to facilitate develop...

Modern approaches to distributed software systems engineering are tightly bounded with formal methods usage. The effective way of certain method application can leverage significant outcome, in terms of corresponding time costs reduction for instance. To this end the TLC model checker has been considered – with respect to TLA+ specifications with c...

In this paper, a new application case of the novel organizational metamodel for Large-Scale Mul-tiagent Systems (LSMASs) being developed is going to be presented. The mentioned metamodel is being tested on a new computer game of Role-Playing Game (RPG) genre by developing a game quest scenario through the model-driven approach. This new application...

The paper summarizes a number of recent application domains (ADs) for large-scale multiagent systems (LSMASs) including the Industry 4.0, cooperative intelligent transport systems (C-ITSs), smart grids, smart cities, virtual & augmented reality (VAR) and electronic sports (eSports). These ADs intentionally overlap to show some of the basic building...

An overview of the Large-Scale Multi-Agent Modelling of Massively Multi-Player On-Line Role-Playing Games (ModelMMORPG) project financed by the Croatian Science Foundation is provided. ModelMMORPG aimed on studying Massively Multi-player Online Role-Playing Games (MMORPGs) using a combined computer science Multiagent System (MAS) and a social scien...

Massively multi-player on-line role-playing games (MMORPGs) present a large-scale, digital environment that fosters organizational behaviour of players in which multi-agent systems (MASs) can be used for various purposes including but not limited to automated testing, bot detection or analysis of social player behaviour and human – artificial agent...

A work-in-progress agent-based framework for automated testing of an open-source massively multi-player on-line role playing game (MMORPG) called The Mana World is presented. The implemented system, in its current state, allows for model-driven development of tests using a graphical user interface (GUI), implementation of automated artificial playe...

Massively On-Line Role Playing Games (MMORPGs) costitute an ideal test-bed scenario for the development and testing of large-scale agent organizations. In this paper the possibility of us- ing a recent agent-based framework called Smart Self-Sustainable Human Settlements (SSSHS) in agent based organizations is analyzed. We provide a conceptual fram...

This paper presents the investigation and comparison of TLC model checking method (TLA Checker) properties. There are two different approaches to method usage which are considered. The first one consists of a transition system states attendance by breadth-first search (BFS), and the second one by depth-first search (DFS). The Kripke structure has b...

A newly developed agent-based framework for modeling, simulation, and evaluation of resource management in self-sustainable human settlements is presented, along with the ability of the framework to prolong the self-sustainability of the observed human settlement system in the simulation environment. In this study the focus is on the analysis of a...

Computing is increasingly ubiquitous, with everyday items including smartphones, cars, clothes and household appliances gaining increasingly sophisticated computing and communication capacities. With the development of the Internet of Things, it is just a matter of time before devices have to collaborate and compete with each other, in order to pro...

Massively Multi-Player On-Line Role-Playing Games (MMORPG) give us the opportunity to study two important aspects of computing: (1) large-scale virtual social interaction of people (players) and (2) the design, development and coordination of large-scale distributed artificial inteligence (AI). A common denominator for both aspects are the methods...

Self-sustainability is a property of a system; a system is considered to be self-sustainable if it can sustain itself without external support in an observed period of time. If this property is mapped to a human settlement in context of resources (water, energy, food, etc.), it would describe a human settlement which is independent of external reso...

Banks are important financial intermediaries of any national economy, and corporate governance has an important role in banking sector; especially due to processes of the globalization and the internationalization, and also because of the sensitivity of the activities between the interest groups. The objective of this paper is to examine the relati...