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Keynote Speeches

Keynote Speech 1: “Agile Modeling Method Engineering -AMME-“

Keynote Speech 2: “Fifty years of evolution in virtualization technologies: From the first IBM machines to the modern hyperconverged infrastructures”

Keynote Speech 1: “Agile Modeling Method Engineering -AMME-“

Prof. Dimitris Karagiannis, University of Vienna


In this context, the foundations of a “conceptual-model”-awareness approach for next generation Enterprise Information Systems will be presented. This novel approach makes use of semantic networks to extend model-awareness towards arbitrary types of models that are developed for specialized communities aiming for domain-specificity (or even case-specificity) in their modeling language, therefore favoring productivity at the expense of reusability across domains. The technological space for capturing and bridging knowledge through model semantics is primarily based on diagrammatic models. Two categories of models are employed in this context: (1) Models of Concepts – for describing a common understanding of a domain through its concepts and relations; (2) Models that use Concepts – typically domain-specific models based on some already established understanding of the domain.

The hereby introduced Agile Modeling Method Engineering –AMME- concept aims to apply the principle of agility established in Software Engineering (e.g., evolutionary development, flexible response to change) to the practice of Modeling Method Engineering. The main assumption is that a modeling method may evolve iteratively based on changing modeling requirements and feedback loops.

Within the context of AMME, a full methodological life cycle is established by the OMiLab Laboratory (, with encompassing five phases: (1) create, (2) design, (3) formalize, (4), develop and (5) deploy/validate. The approach is supported, in its  prototyping stage, by the  meta modeling domain-specific language MM-DSL and within the academic version of the meta-modeling platform ADOxx (

Short Bio of Prof. Karagiannis

Dimitris Karagiannis read Computer Science at the Technical University of Berlin and was subsequently a visiting scientist at research institutions in the US and Japan. Between 1987 and 1992 he was the scientific director of the Business Information Systems Group at the Research Institute for Applied Knowledge Management (FAW) in Germany. From 1993 onwards he has been full professor at the Faculty of Computer Science at the University of Vienna, where he started the Knowledge Engineering Research Group. Since 2000 he creates the Open Model Initiative Laboratory ( based on the ADOxx meta-modeling platform.

His main research interests include Knowledge Management, modeling methods and meta-modeling platforms. Besides his engagement in national and EU-funded research projects Dimitris Karagiannis is the author of research papers and books. He serves as an expert in various international conferences and is currently on the editorial board of Business & Information Systems Engineering (BISE), Enterprise Modeling and Information Systems Architectures, Journal of Systems Integration and the Journal of Requirements Engineering. He has held appointment as a visiting professor and scientific expert at many international institutions.

In 1995 he established the Business Process Management Systems Approach (BPMS), which has been successfully applied in business process projects as implementation methodology within several industrial and service companies. He is the founder and at present chairman of the supervisory board of the European software- and consulting company BOC (, which implements software tools based on the meta-modeling approach and offers related services.

Keynote Speech 2: “Fifty years of evolution in virtualization technologies: From the first IBM machines to the modern hyperconverged infrastructures “

Prof. Nectarios Koziris, National Technical University of Athens


The evolution of virtualization is an exciting history of enabling technologies that have offered the ability to organize and utilize the hardware resources more efficiently. We will start from the origins of the first IBM machines back in 1960’s, where the notion of virtualization was originally introduced to partition the hardware resources more efficiently. This was well before the onset of the majority of the operating systems in the early 1970’s, which were initially introduced as a software alternative to partition and expose hardware resources to multiple users. In the late 1980’s and 1990’s the software hypervisors allowed the multiplexing of PC hardware and enabled the use of virtual machines, which in the 2000’s became a commodity that needed to be efficiently orchestrated and provisioned in bulk. The IaaS cloud era had arrived, bringing more interesting challenges for the dynamic, thin provisioning of hardware and software resources to applications. Nowadays, we are living in the times of “software defined everything”.  We have hyper-convergence in all our datacenter infrastructures, where all compute, network and storage resources are controlled by software. The talk will present this exciting long technology journey that started more than 50 years ago and still continues, always driven by the notion of virtualizing expensive hardware resources to multiple users.

Short Bio of Prof. Koziris

Nectarios Koziris is a Professor of Computer Science at the School of Electrical and Computer Engineering of the National Technical University of Athens. His research interests include parallel and distributed systems, interaction between compilers, OS and architectures, hardware virtualization and large scale storage systems. He has co-authored more than 140 research papers with more than 2500 citations. From 1998 he has been involved in the organization of many international scientific conferences including IPDPS, ICPP, SC, SPAA, etc. He has given many invited talks in conferences and universities. He is a recipient of two best paper awards for his research in parallel and distributed computing (IEEE/ACM IPDPS 2001 and CCGRID 2013) and had received recognition for his contributions in concurrent systems from the processor industry. He has participated as a partner or consortium coordinator in several EU projects involving large-scale systems (GREDIA, GRID4ALL, ARCOMEM, CELAR, ASAP, EGI, PRACE etc). He is a member of the IEEE Computer Society, senior member of the ACM, secretary/treasurer of the IEEE Greece Section and started the IEEE Computer Society Greece. To promote the open source software in Greece, he co-founded the Greek Free/Open Source Software Society ( in 2008, with members 29 Greek Universities and Research Centers, where he is now serving as the Vice-Chair of the Board of Directors. He was  a member of the EU cloud computing expert group (2012-2013) which was established with the aim to develop a cloud computing vision for Europe and future research directions. For the last 10 years (2004-2014), Nectarios has served as the Vice-Chair of the Board of Directors for the Greek Research and Technology Network-GRNET ( He was the founder of the ~okeanos project, a public Cloud IaaS infrastructure, powered by the open source Synnefo software ( He has also served (2013-2014) as a member of the BoD for the Athena Research and Innovation Center in Information, Communication and Knowledge Technologies ( For more: