Dennis Heinrich, M.Sc.

- Wissenschaftlicher Mitarbeiter -

 

Institut für Informationssysteme
Universität zu Lübeck
Ratzeburger Allee 160 ( Gebäude 64 - 2.OG )
D-23562 Lübeck

Telefon: +49 451 3101 5705
Fax : +49 451 3101 5704
email : Öffnet ein Fenster zum Versenden einer E-Mail E-Mail an Dennis Heinrich
 
 
 

Curriculum Vitae

Publikationen

2017

  • Dennis Heinrich, Stefan Werner, Christopher Blochwitz, Thilo Pionteck, Sven Groppe: Search & Update Optimization of a B+ Tree in a Hardware aided Semantic Web Database System
    in: Proceedings of the 7th International Conference on Emerging Databases (EDB), 2017, Runner-Up Paper Award
    BibTeX
  • Stefan Werner, Dennis Heinrich, Thilo Pionteck, Sven Groppe: Semi-static operator graphs for accelerated query execution on FPGAs
    in: Microprocessors and Microsystems, 2017, Vol.53, p.178 - 189
    DOI Website BibTeX
  • Christopher Blochwitz, Julian Wolff, Jan Moritz Joseph, Stefan Werner, Dennis Heinrich, Sven Groppe, Thilo Pionteck: Hardware-Accelerated Radix-Tree Based String Sorting for Big Data Applications
    in: Architecture of Computing Systems (ARCS 2017) - 30th International Conference, 2017, 3.-6. April, Vienna, Austria, LNCS, Vol.10172, p.47-58
    Website BibTeX
nach oben

2016

  • Sven Groppe, Dennis Heinrich, Christopher Blochwitz, Thilo Pionteck: Constructing Large-Scale Semantic Web Indices for the Six RDF Collation Orders
    in: Open Journal of Big Data (OJBD), 2016, Vol.2, (1), p.11-25, ISSN 2365-029X
    Website BibTeX
  • Stefan Werner, Dennis Heinrich, Sven Groppe, Christopher Blochwitz, Thilo Pionteck: Runtime Adaptive Hybrid Query Engine based on FPGAs
    in: Open Journal of Databases (OJDB), 2016, Vol.3, (1), p.21-41
    Website BibTeX
nach oben

2015

  • Sven Groppe, Dennis Heinrich, Stefan Werner: Distributed Join Approaches for W3C-Conform SPARQL Endpoints
    in: Open Journal of Semantic Web (OJSW), 2015, Vol.2, (1), p.30-52
    Website BibTeX:
    @Article{OJSW_2015v2i1n04_Groppe,
            title     = {Distributed Join Approaches for W3C-Conform SPARQL Endpoints},
            author    = {Sven Groppe and Dennis Heinrich and Stefan Werner},
            journal   = {Open Journal of Semantic Web (OJSW)},
            issn      = {2199-336X},
            year      = {2015},
            volume    = {2},
            number    = {1},
            pages     = {30--52},
            url       = {http://www.ronpub.com/publications/OJSW_2015v2i1n04_Groppe.pdf},
            publisher = {RonPub},
            bibsource = {RonPub},
            abstract = {Currently many SPARQL endpoints are freely available and accessible without any costs to users: Everyone can submit SPARQL queries to SPARQL endpoints via a standardized protocol, where the queries are processed on the datasets of the SPARQL endpoints and the query results are sent back to the user in a standardized format. As these distributed execution environments for semantic big data (as intersection of semantic data and big data) are freely accessible, the Semantic Web is an ideal playground for big data research. However, when utilizing these distributed execution environments, questions about the performance arise. Especially when several datasets (locally and those residing in SPARQL endpoints) need to be combined, distributed joins need to be computed. In this work we give an overview of the various possibilities of distributed join processing in SPARQL endpoints, which follow the SPARQL specification and hence are "W3C conform". We also introduce new distributed join approaches as variants of the Bitvector-Join and combination of the Semi- and Bitvector-Join. Finally we compare all the existing and newly proposed distributed join approaches for W3C conform SPARQL endpoints in an extensive experimental evaluation.}
        }
  • Christopher Blochwitz, Jan Moritz Joseph, Thilo Pionteck, Rico Backasch, Stefan Werner, Dennis Heinrich, Sven Groppe: An optimized Radix-Tree for hardware-accelerated index generation for Semantic Web Databases
    in: International Conference on ReConFigurable Computing and FPGAs (ReConFig), 2015, December 7 - 9, Cancun, Mexico
    BibTeX
  • Sven Groppe, Dennis Heinrich, Stefan Werner, Christopher Blochwitz, Thilo Pionteck: PatTrieSort - External String Sorting based on Patricia Tries
    in: Open Journal of Databases (OJDB), 2015, Vol.2, (1), p.36-50
    Website BibTeX
  • Stefan Werner, Dennis Heinrich, Jannik Piper, Sven Groppe, Rico Backasch, Christopher Blochwitz, Thilo Pionteck: Automated Composition and Execution of Hardware-accelerated Operator Graphs
    in: Proceedings of the 10th International Symposium on Reconfigurable Communication-centric Systems-on-Chip (ReCoSoC 2015), 2015, June 29 - July 1, IEEE, Bremen, Germany
    DOI BibTeX
  • Dennis Heinrich, Stefan Werner, Marc Stelzner, Christopher Blochwitz, Thilo Pionteck, Sven Groppe: Hybrid FPGA Approach for a B+ Tree in a Semantic Web Database System
    in: Proceedings of the 10th International Symposium on Reconfigurable Communication-centric Systems-on-Chip (ReCoSoC 2015), 2015, June 29 - July 1, IEEE, Bremen, Germany
    BibTeX
  • Stefan Werner, Dennis Heinrich, Marc Stelzner, Volker Linnemann, Thilo Pionteck, Sven Groppe: Accelerated join evaluation in Semantic Web databases by using FPGAs
    in: Concurrency and Computation: Practice and Experience, 2015, May 18, Vol.28, (7), p.2031-2051
    DOI BibTeX
nach oben

2014

  • Sven Groppe, Johannes Blume, Dennis Heinrich, Stefan Werner: A Self-Optimizing Cloud Computing System for Distributed Storage and Processing of Semantic Web Data
    in: Open Journal of Cloud Computing (OJCC), 2014, Vol.1, (2), p.1-14
    Website BibTeX
  • Sven Groppe, Thomas Kiencke, Stefan Werner, Dennis Heinrich, Marc Stelzner, Le Gruenwald: P-LUPOSDATE: Using Precomputed Bloom Filters to Speed Up SPARQL Processing in the Cloud
    in: Open Journal of Semantic Web (OJSW), 2014, Vol.1, (2), p.25-55
    Website BibTeX
  • Stefan Werner, Dennis Heinrich, Marc Stelzner, Sven Groppe, Rico Backasch, Thilo Pionteck: Parallel and Pipelined Filter Operator for Hardware-Accelerated Operator Graphs in Semantic Web Databases
    in: Proceedings of the 14th IEEE International Conference on Computer and Information Technology (CIT 2014), 2014, September 11 - 13, IEEE, Xi´an, China, Copyright: IEEE
    DOI BibTeX
nach oben