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  1. No Access

    Article

    Adaptive partitioning and indexing for in situ query processing

    The constant flux of data and queries alike has been pushing the boundaries of data analysis systems. The increasing size of raw data files has made data loading an expensive operation that delays the data-to-...

    Matthaios Olma, Manos Karpathiotakis, Ioannis Alagiannis… in The VLDB Journal (2020)

  2. No Access

    Chapter and Conference Paper

    DBMS Data Loading: An Analysis on Modern Hardware

    Data loading has traditionally been considered a “one-time deal” – an offline process out of the critical path of query execution. The architecture of DBMS is aligned with this assumption. Nevertheless, the ra...

    Adam Dziedzic, Manos Karpathiotakis, Ioannis Alagiannis… in Data Management on New Hardware (2017)

  3. No Access

    Chapter and Conference Paper

    Towards the Identification of Disease Signatures

    The identification of biological signatures of diseases will enable the development of new biologically grounded classifications of brain diseases, leading to a new systematic understanding of their causes, an...

    Tassos Venetis, Anastasia Ailamaki, Thomas Heinis… in Brain Informatics and Health (2015)

  4. No Access

    Chapter and Conference Paper

    The Spatiotemporal RDF Store Strabon

    Strabon is a very scalable and efficient RDF store for storing and querying geospatial data that changes over time. We present the geospatial and temporal features of Strabon and we demonstrate their utilizati...

    Kostis Kyzirakos, Manos Karpathiotakis… in Advances in Spatial and Temporal Databases (2013)

  5. No Access

    Chapter and Conference Paper

    Building Virtual Earth Observatories Using Ontologies and Linked Geospatial Data

    Advances in remote sensing technologies have enabled public and commercial organizations to send an ever-increasing number of satellites in orbit around Earth. As a result, Earth Observation (EO) data has been...

    Manolis Koubarakis, Manos Karpathiotakis… in Web Reasoning and Rule Systems (2012)

  6. No Access

    Chapter

    Data Models and Query Languages for Linked Geospatial Data

    The recent availability of geospatial information as linked open data has generated new interest in geospatial query processing and reasoning, a topic with a long tradition of research in the areas of database...

    Manolis Koubarakis, Manos Karpathiotakis… in Reasoning Web. Semantic Technologies for A… (2012)

  7. No Access

    Chapter and Conference Paper

    Building Virtual Earth Observatories Using Ontologies, Linked Geospatial Data and Knowledge Discovery Algorithms

    Advances in remote sensing technologies have allowed us to send an ever-increasing number of satellites in orbit around Earth. As a result, satellite image archives have been constantly increasing in size in t...

    Manolis Koubarakis, Michael Sioutis… in On the Move to Meaningful Internet Systems… (2012)

  8. Chapter and Conference Paper

    Strabon: A Semantic Geospatial DBMS

    We present Strabon, a new RDF store that supports the state of the art semantic geospatial query languages stSPARQL and GeoSPARQL. To illustrate the expressive power offered by these query languages and their ...

    Kostis Kyzirakos, Manos Karpathiotakis, Manolis Koubarakis in The Semantic Web – ISWC 2012 (2012)

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  9. Chapter and Conference Paper

    A Semantically Enabled Service Architecture for Mashups over Streaming and Stored Data

    Sensing devices are increasingly being deployed to monitor the physical world around us. One class of application for which sensor data is pertinent is environmental decision support systems, e.g. flood emerge...

    Alasdair J. G. Gray, Raúl García-Castro… in The Semanic Web: Research and Applications (2011)

    Download PDF (597 KB)