Team :: Dipl.-Inf. Benjamin Schlegel

Office Nöthnitzer Str. 46, Room 3073 D-01187 Dresden how to reach us Contact Tel.: +49 351-463-37908 Fax: +49 351 463-38259 E-Mail:

Research Interests Data Stream Management Systems Compression techniques Frequent-itemset mining Search algorithms Teaching Activities Betreuung von Beleg- und Diplomarbeiten Übung ADBS Übung AVIS Komplexpraktikum: Accenture Campus Challange Hauptseminar: Datenbanktechnologien im Kontext neuer Hardware

Publications

2013
• Kissinger T.; Schlegel, B.; Habich D.; Lehner, W.: Query Processing on Prefix Trees Live. Appears In: Proceedings of the ACM SIGMOD International Conference on Management of Data, SIGMOD 2013, June 22-27, 2013, New York, NY, USA. 
• Kiefer, T.; Schlegel, B.; Lehner, W.: Experimental Evaluation of NUMA-Effects on Database Management Systems. In: Proceedings of the GI-Fachtagung Datenbanksysteme für Business, Technologie und Web, BTW 2013, March 11-15, Magdeburg, Germany.
• Karnagel, T.; Schlegel, B.; Habich, D.; Lehner, W.: Stream Join Processing on Heterogeneous Processors. In Proceedings of BTW-Workshops 2013, Data Streams and Event Processing (DSEP), pages 17-26, Magdeburg, Germany.
• Kissinger T.; Schlegel, B.; Habich, D.; Lehner W.: QPPT: Query Processing on Prefix Trees. In: Proceedings of the 6th Biennial Conference on Innovative Data Systems Research (CIDR 2013), Asilomar, California, USA.

2012
• Kissinger, T.; Schlegel, B.; Böhm, M.; Habich, D.; Lehner, W.: A High-Throughput In-Memory Index, Durable on Flash-based SSD. In: SIGMOD Record, September 2012.
• Kiefer, T.; Schlegel, B.; Lehner, W.: MulTe: A Multi-Tenancy Database Benchmark Framework. In: Proceedings of the TPC Technology Conference, TPCTC 2012, August 27, Istanbul, Turkey.
• Kissinger T.; Schlegel, B.; Habich D.; Lehner W.: KISS-Tree: Smart Latch-Free In-Memory Indexing on Modern Architectures. In: Proceedings of the Eighth International Workshop on Data Management on New Hardware (DaMoN 2012), Scottsdale, AZ, USA.

2011
• Schlegel, B.; Willhalm, T.; Lehner, W.: Fast Sorted-Set Intersection using SIMD Instructions. In Proceedings of the Second International Workshop on Accelerating Data Management Systems Using Modern Processor and Storage Architectures (ADMS 2011), Septemper 1, 2011, Seattle, WA, USA
  
• Habich, D.; Böhm, M.; Thiele, M.; Schlegel, B.; Fischer, U.; Voigt, H.; Lehner, W.: Next Generation Database Programming and Execution Environment; In Proceedings of the 13th International Symposium on Database Programming Languages (DBPL 2011, Seattle, WA, USA), 2011.
• Schlegel, B.; Gemulla, R.; Lehner, W.: Memory-Efficient Frequent-Itemset Mining. In: 13th International Conference on Extending Database Technology (EDBT 2011), March 22-24, 2011, Uppsala, Sweden
• Böhm, M.; Schlegel, B.; Volk, P. B.; Fischer, U.; Habich, D.; Lehner, W.: Efficient In-Memory Indexing with Generalized Prefix Trees; In Proceedings der 14. GI-Fachtagung für Datenbanksysteme in Business, Technology und Web (BTW 2011), February 28 - March 4, 2011, Kaiserslautern, Germany, 2011.
2010
• Schlegel, B.; Gemulla, R.; Lehner, W.: Fast Integer Compression using SIMD Instructions; In Proceedings of the Sixth International Workshop on Data Management on New Hardware (DaMoN 2010), June 7, 2010, Indianapolis, Indiana, USA
2009
• Schlegel, B.; Gemulla, R.; Lehner, W.: k-Ary Search on Modern Processors; In Proceedings of the Fifth International Workshop on Data Management on New Hardware (DaMoN 2009), June 28, 2009, Providence, Rhode Island, USA
2007
• Schmidt, S.; Schlegel, B.; Lehner, W.: QDM: A Generic QoS-aware Data Model for Real-Time Data Stream Processing. In: Proceedings of the First International Workshop on Data Stream Processing (STREAM 2007, Santa Clara (CA), 1..-7. Juli), 2007

Download (Source code)

• kary_search.zip
• The source code for the paper "Scalable Frequent Itemset Miningon Many-core Processors" will be available with the camera-ready version of the paper.

Download (Datasets)

• datasets.zip (27MB)
• zipf0_8.dat (32MB)
• zipf1_0.dat (32MB)
• zipf1_1.dat (32MB)
• zipf1_1_minus1.dat (32MB)
• zipf1_25.dat (32MB)
• zipf1_75.dat (32MB)
• The datasets for the paper "Scalable Frequent Itemset Miningon Many-core Processors" will be available with the camera-ready version of the paper.