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Yannis Theodoridis
Researcher at University of Piraeus
Publications - 236
Citations - 10009
Yannis Theodoridis is an academic researcher from University of Piraeus. The author has contributed to research in topics: Spatial database & Spatial query. The author has an hindex of 47, co-authored 223 publications receiving 9426 citations. Previous affiliations of Yannis Theodoridis include National and Kapodistrian University of Athens & Research Academic Computer Technology Institute.
Papers
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Journal ArticleDOI
Point representation of spatial objects and query window extension: a new technique for spatial access methods
TL;DR: The basic idea of this technique is to represent all spatial objects by their MBRs and further reduce them into points of the same dimensionality, so that any multidimensional Point Access Method (PAM) may be used to support access.
Journal Article
Measuring Performance in the Retail Industry
TL;DR: The aim is to intensify the need for integrated performance measurement and management, as a way to ameliorate the existing tools for decision making, which are currently based on historical data.
Journal ArticleDOI
A Survey on Big Data Processing Frameworks for Mobility Analytics
TL;DR: In this article, a survey of big data processing frameworks for mobility analytics is presented, focusing on the underlying techniques; indexing, partitioning, query processing are essential for enabling efficient and scalable data management.
Book ChapterDOI
Searching for Spatio-Temporal-Keyword Patterns in Semantic Trajectories
Fragkiskos Gryllakis,Nikos Pelekis,Christos Doulkeridis,Stylianos Sideridis,Yannis Theodoridis +4 more
TL;DR: This paper focuses on the efficient processing of pattern queries over the STK domain, hence called Spatio-Temporal-Keyword Pattern (STKP) queries, based on efficient index structures that take into account the triple nature of these patterns and is developed in a NoSQL graph database.