VLDB 2026 Research / reviewers in the wild / expert
George Tsakalidis
dblp:202/8233
· DBLP profile ↗
6ranked-venue papers
4as first author
2since 2021 · last 2026
0000-0002-0889-7946ORCID · verified
Domains — the database's venue-derived domains; a paper can count in several
Software engineering, systems software and programming languages · 3 · 2 first-author · 2 since 2021Artificial intelligence and machine learning · 1Security and privacy · 1 · 1 first-authorHuman-computer interaction and ubiquitous computing · 1 · 1 first-authorApplied, interdisciplinary, general and emerging computing · 1 · 1 first-author
| Year | Publication | Venue | Position |
|---|---|---|---|
| 2026 | Systematicity and generalizability in business process redesign methodologies: A systematic literature reviewabstractContext Business Process Management (BPM) plays a central role in helping organizations improve efficiency and service delivery, particularly in environments with rising demands and limited resources. Within this field, Business Process Redesign (BPR) has emerged as a way to rethink and restructure processes in response to continuous change. However, many existing BPR methodologies fall short—they lack methodological rigor and are often too narrowly tailored to specific industries or use cases. Objectives This study explores whether BPR methodologies are both systematically structured and broadly applicable across domains. It addresses three key questions: whether current approaches are methodologically grounded, whether they can be applied across diverse contexts, and what core elements are necessary to support both structure and generalizability in BPR design. Methods A systematic literature review (SLR) was conducted, applying an eight-step protocol to assess sixty-four primary BPR methodologies drawn from academic databases. Each methodology was evaluated against two sets of criteria: five indicators of systematic design (e.g., defined phases, interdependencies, evaluation checkpoints), and five indicators of generalizability (e.g., cross-domain adaptability, notation flexibility, heuristic support). A concept-centric synthesis was used to analyze the findings. Results Of the methodologies reviewed, thirty-eight demonstrated systematic features, while only eight met broader applicability standards. Only one methodology satisfied all ten criteria, revealing a notable gap in the field and a need for more balanced, reusable frameworks. Conclusion The study highlights a significant gap in the current BPR methodologies and presents the BPR Application Framework —a structured yet adaptable methodology that combines phase-based design with heuristic integration and notation-aware modeling. Compared with established references like BPM CBOK and Lean Six Sigma, it offers a clearer, more actionable path for practitioners and researchers seeking both rigor and flexibility in BPR. George Tsakalidis, Kostas Vergidis |
Sci. Comput. Program. | 1 |
| 2024 | Not yet another BPM lifecycle: A synthesis of existing approaches using BPMN
Nikolaos Nousias, George Tsakalidis, Kostas Vergidis |
Inf. Softw. Technol. | 2 |
| 2019 | A cybercrime incident architecture with adaptive response policy
George Tsakalidis, Kostas Vergidis, Sophia G. Petridou, Maro Vlachopoulou |
Comput. Secur. | 1 |
| 2019 | A Systematic Approach Toward Description and Classification of Cybercrime IncidentsabstractThe advancements in computer systems and networks have created a new environment for criminal acts, widely known as cybercrime. Cybercrime incidents are occurrences of particular criminal offences that pose a serious threat to the global economy, safety, and well-being of society. This paper offers a comprehensive understanding of cybercrime incidents and their corresponding offences combining a series of approaches reported in relevant literature. Initially, this paper reviews and identifies the features of cybercrime incidents, their respective elements and proposes a combinatorial incident description schema. The schema provides the opportunity to systematically combine various elements-or cybercrime characteristics. Additionally, a comprehensive list of cybercrime-related offences is put forward. The offences are ordered in a two-level classification system based on specific criteria to assist in better classification and correlation of their respective incidents. This enables a thorough understanding of the repeating and underlying criminal activities. The proposed system can serve as a common reference overtaking obstacles deriving from misconceptions for cybercrimes with cross-border activities. The proposed schema can be extended with a list of recommended actions, corresponding measures and effective policies that match with the offence type and subsequently with a particular incident. This matching will enable better monitoring, handling and moderate cybercrime incident occurrences. The ultimate objective is to incorporate the schema-based description of cybercrime elements to a complete incident management system with standard operating procedures and protocols. George Tsakalidis, Kostas Vergidis |
IEEE Trans. Syst. Man Cybern. Syst. | 1 |
| 2018 | Cybercrime Offences: Identification, Classification and Adaptive ResponseabstractMultiple studies and surveys focus on specific cybercrime characteristics or develop classification models that do not adequately address the complexity of this contemporary type of crime. This study proposes a comprehensive approach towards cybercrime interpretation and action recommendation through a proposed framework that provides three separate and complementary views to achieve a comprehensive perspective that leads to actionable recommendations. The framework's view I identifies the features of a cybercrime incident and their corresponding elements generating a textual schema-based description that can accommodate existing and new instances of cybercrime. The second view introduces an up-to-date cybercrime-related offence classification system through consolidation and elaboration of existing approaches and leads to a visual extension of schema-based incident description that depicts the interrelations of the various cybercrime elements towards a particular type of offence. View III identifies and interconnects the relevant stakeholders with preventive and response actions and measures. The proposed framework extends previous published work on the theoretical foundation of this multi-faceted domain, and demonstrates that the necessity of a comprehensive approach towards cybercrime can be actualized through different steps with each one designated towards a different perspective. George Tsakalidis, Kostas Vergidis, Michael A. Madas |
CoDIT | 1 |
| 2017 | Evolutionary Multi-Objective Optimization of business process designs with pre-processingabstractThis paper discusses the problem of business process optimization within a multi-objective evolutionary framework. Business process optimization (BPO) is considered as the problem of constructing feasible business process designs with optimum attribute values such as duration and cost. The proposed approach involves a pre-processing stage and the application of a series of Evolutionary Multi-Objective Optimization Algorithms (EMOAs) in an attempt to generate a series of diverse optimized business process designs for the same process requirements. The proposed optimization framework introduces a quantitative representation of business processes involving two matrices one for capturing the process design and one for calculating and evaluating the process attributes. It also introduces an algorithm that checks the feasibility of each candidate solution (i.e. process design). The work presented in this paper is aimed to investigate the benefits that come from the utilization of a pre-processing stage in the execution process of the EMOAs. The experimental results demonstrate that the proposed optimization framework is capable of producing a satisfactory number of optimized design alternatives considering the problem complexity and high rate of infeasibility. The addition of the pre-processing stage appears to have a positive effect on the framework by producing more non-dominated solutions in reduced time frames. Kostas Georgoulakos, Kostas Vergidis, George Tsakalidis, Nikolaos Samaras |
CEC | 3 |