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Mr Georgios Vranopoulos

Research Student

Brief biographical information


Metadata in Tackling Big Data Variety

The digital universe, since 2013, is growing with a yearly rate of 40% and is expected to reach 44 zettabytes by 2020. This explosion of data led to the development of new technologies and concepts, summarized under the term “Big Data”, .as large enterprises such as Yahoo, Google, Facebook and LinkedIn endeavored to analyze large amounts of data. Gartner’s Hype Cycle for Emerging Technologies for 2014 shows that although the promise of Big Data is real, there is a gap between potential and realization. Although there are several definitions of “Big Data” it is common to interpret the term with the use of “v’s”, based upon a seminal article by Laney. The original three “v’s” identified were Volume – Velocity – Variety. However, over the years the model was extended with Veracity – Validity – Volatility – Value. Variety refers to different formats (text, audio, video etc.), structures (structured, semi-structured, unstructured) and context. Apart from data being heterogeneous, thus a barrier to effective data management, the integration of internal (company transactional) data and external (social/public) datasets is becoming a key requirement and significant challenge. A framework that would facilitate in minimizing the risks, confusion and complexity posed by variety should boost business adoption, as exhibited with the adoption of the semantic layer in RDBMS BI visualization tools.

The MPhil phase of this research will seek to develop a current state of the art understanding of Big Data, metadata and semantics. In particular, on Big Data, the technical, business and societal aspects will be identified while for metadata and semantics the current implementation models (web, RDBMS) will be investigated. A survey, primarily in the financial sector, will be undertaken to evaluate the business understanding, expectations and areas of concern in implementing a Big Data project

Mr Georgios Vranopoulos

Director of studies: Dr Shirley Atkinson
Other supervisors: Prof. Nathan L Clarke

Conference papers

Increasing eLearning Engagement Using Mobile Technologies
Triantafyllidis A, Clarke NL, Haskell-Dowland PS (Dowland PS), Vranopoulos G
9th annual International Conference of Education, Research and Innovation (ICERI2016), 14-16 November, Seville, Spain, pp8644-8653, ISBN: 978-84-617-5895-1, ISSN: 2350-1095, 2016
More details | External link available

1 Conference papers

1 publication(s) - all categories.