Digital Transformation: From Data Analytics to Customer Solutions. A Framework of Types, Techniques and Tools


  • Michail Angelopoulos University of Piraeus
  • Yannis Pollalis Department of Economics, University of Piraeus, Greece



Big Data, Machine Learning, Data Analytics, Data-driven solutions, Digital transformation


It has become clear by now that the digital transformation has an obvious, lasting impact as much on the economic systems and commercial players as on the lives of individuals and on society at large. The decisions we make, our actions, even our existence in the digital world result in the production of massive amounts of data. These data can be integrated into large data analysis ecosystems and contribute positively to the revision of current business models and practices. Machine learning algorithms combined with the suitable tools, such as Python, turn raw data into useful information and lead to critical and correct decisions. The aim of this paper is to present a review of current popular and useful data analytics techniques and tools that lead to custom solutions for both customer and business. The most famous techniques based on Machine learning and visualization tools are represented here.

Author Biography

Michail Angelopoulos, University of Piraeus

Dr. Michail Angelopoulos since 2014 is Head of Planning & Financial Section at Research Center of Public Power Corporation SA (GR)The previous position in the Enterprise was Head of Research Section from 2008 – 2014. Prior was Chairman of the Board at Greek Observatory for the Information Society, and President at Prefecture Enterprise of Athens. Michail Angelopoulos was adjunct professor for operational research at Hellenic Air Force Academy, and for several years was teaching computer programming at General Mathematical Department of Technological Education Institute of Piraeus (GR). He holds a Degree in Mathematics and a MSc in Computer Science & Operational Research from University of Athens (GR). Additionally, he holds a MSc in Manufacturing: Management & Technology from The Open University (UK), a MBA from Hellenic Open University (GR), a Professional Certificate of Data Science for Executives from Columbia University (USA), and a Project Management Professional (PMP) Certificate from PMI Institute (USA). Michail Angelopoulos since 2020 is Doctor of Philosophy at University of Piraeus, Department of Economics (GR). Publications: 1. Angelopoulos, Michail and Pollalis, Yannis (2020). “Use of open data as a tool for successful lean management in public services: evidence from Greece”, Journal of Economics and Business (SPOUDAI), Vol.1-2 (8) 2. Grammatikis, P.R., Sarigiannidis, P., Iturbe, E., Rios. E., Sarigiannidis, A., Ioannidis, D., Machamint, V., Angelopoulos, M., Ramos F. (2020). “Secure and Private Smart Grid: The Spear Architecture”, Paper Conference, 6th IEEE International Conference on Network Softwarization (NetSoft2020), 2nd International Workshop on Cyber-Security Threats, Trust and Privacy Management in Software-defined and Virtualized Infrastructures (SecSoft), Ghent, Belgium. 3. Angelopoulos, Michail and Pollalis, Yannis (2019).”Critical Success Factors of Lean Management in Public Sector: Evidence from Greece”, International Journal of Management and Applied Science (IJMAS), Volume-5, Issue-10, pp12-18, DOI: IJMAS-IRAJ-DOI-16454 4. Angelopoulos, M.K., Kontakou, C.A. Pollalis, Y.A. (2019). “Lean management through digital transformation: Challenges and opportunities for the energy and public utilities industry”. Journal of Advanced Research in Management, Volume X, Winter, 2(20):57-69. DOI:10.14505/jarm.v10.2(20).01 5. Efstathopoulos, G, Grammatikis, P.R., Sarigiannidis, P., Argyriou, V., Sarigiannidis, A., Angelopoulos M. K. (2019). “Operational Data Based Intrusion Detection System for Smart Grid”, Paper Conference (Best Award), IEEE 24th International Workshop on Computer Aided Modeling and Design of Commmunication Links and Networks (CAMAD), Cyprus. Publisher:IEEE, DOI:10.1109/CAMAD.2019.8858503 6. Angelopoulos, Michail and Pollalis, Yannis (2017). “The Activity Based Costing application as a tool in supporting a Greek Public Company’s transition to a Lean Company”,Munich Personal RePEc Archive, Germany. 7. Angelopoulos, Michail and Pollalis, Yannis (2017).“Using KPIs and ABC costing system results during a Lean transformation to a Greek Public Company”, Munich Personal RePEc Archive, Germany. 8. Μ. P. Saltouros, M.Theologou, M. K. Angelopoulos, Ch. S. Ricoudis (1999), “An Efficient Evolutionary Algorithm for (Near)-Optimal Steiner Trees Calculation: an Approach to Routing of Multipoint Connections”, in Proceeding of 3rd International Conference on Computational Intelligence and Multimedia Applications (3rd ICCIMA ’99), New Delhi, India. 9. M. K Angelopoulos (1996). "Competitive European Programs The characteristics of a successful proposal", Conference Technology and Automation, Conference proceedings pp. 192-195, TEI PIRAEUS, 9-10 May 1996. Projects: Chairman of the Research Programs Committee of the Research & Standards Testing Center (June 2016 - today) Financial Signatory, Coordinator, Administrator and Member of the Research Teams of the approved European programs of PPC SA in the framework of the action Horizon 2020 of the European Union: 1. FTI Pilot-01- 2016 - Fast Track to Innovation Pilot An ultrasonic non-destructive testing system for detection and quantification of early stage subsurface creep damage in the thermal power generation industry – CREEPUT (PPC SA Budget: 866.722,50 €) 2. DS-07-2017 - Digital Security Focus Area Secure and PrivatE smart gRid– SPEAR (PPC SA Budget: 196.250,00 €) 3. SU-DS04-2018-2020 - Digital Security SDN–microgridre Silient Electrical eNergy SystEm-SDN-MicroSENSE ( PPC SA Budget: 258.750,00€) 4. Electrical Power System’s Shield against complex incidents and extensive cyber and privacy attacks - PHOENIX ( PPC SA Budget: 304.250,00 €) 5. LC-SC3-EC-4-2020 - Building A Low-Carbon, Climate Resilient Future: Secure, Clean And Efficient Energy bEhaVioral Insgihts anD Effective eNergy policy acTions – EVIDENT ( PPC SA Budget: 169.375,00 €) 6. ICT-56-2020 - Information and Communication Technologies nexT gEneRation sMart INterconnectEd ioT - TERMINET ( PPC SA Budget: 171.875,00€) Coordinator, Manager and Member of the Research Teams of the approved research programs of PPC SA in the framework of the action "RESEARCH - CREATE - INNOVATE" and the action "Bilateral Greek-German Cooperation" of the GSRT (NSRF): 1. Bioconversion of lignite power plant emissions to fuels and fine chemicals– BIOMEK ( PPC SA Budget: 490.010,00 €) 2. Efficient conversion of Greek Lignite and agricultural residues to electricity through catalyst-aided integrated gasification/SOFC and Direct Carbon Fuel Cell processes– LIGBIO GASOFC ( PPC SA Budget: 214.000,00 €) 3. Scale up of Electrochemically Promoted Catalytic Hydrogenation of CO2 for fuel production– CO2 TO FUELS ( PPC SA Budget: 270.000,00 €) 4. Injection locked (mutually coupled) Mid-infrared Interband Cascade Laser based gas sensor– ILLIAS (PPC SA Budget: 200.000,00 €) 5. Innovative protective coatings for energy and resource efficiency applications in power plants– CREATION ( PPC SA Budget: 40.000,00 €) 6. smArt mUlTi drOne insPection System for Critical EnergY Infrastructures– AUTOPSY (PPC SA Budget: 193.000,00 €)




How to Cite

Angelopoulos, M., & Pollalis, Y. (2021). Digital Transformation: From Data Analytics to Customer Solutions. A Framework of Types, Techniques and Tools . Archives of Business Research, 9(6), 26–37.