Dr. Harald Lang Address: Technische Universität München Institut für Informatik Boltzmannstr. 3 85748 Garching Room: 02.11.061 Phone: +49 (0)89 / 289-17277 E-Mail: harald.lang@tum.de Office Hours: Please call/mail ahead for an appointment

Research Interests

• In-memory database management systems
• Query processing on heterogeneous system architectures
• Index structures
• Real-time analytics and stream processing

Publications

• Tree-Encoded Bitmaps

  Harald Lang, Alexander Beischl, Viktor Leis, Peter Boncz, Thomas Neumann, Alfons Kemper; SIGMOD 2020 (source code, slides)
• Adaptive Main-Memory Indexing for High-Performance Point-Polygon Joins

  Andreas Kipf, Harald Lang, Varun Pandey, Raul Alexandru Persa, Christoph Anneser, Eleni Tzirita Zacharatou, Harish Doraiswamy, Peter Boncz, Thomas Neumann, Alfons Kemper; EDBT 2020
• Make the Most out of Your SIMD Investments: Counter Control Flow Divergence in Compiled Query Pipelines [Extended Version]

  Harald Lang, Linnea Passing, Andreas Kipf, Peter Boncz, Thomas Neumann, Alfons Kemper; The VLDB Journal
• Fluid Co-processing: GPU Bloom-filters for CPU Joins

  Tim Gubner, Diego Tomé, Harald Lang, Peter Boncz; DaMoN 2019
• The Power of SQL Lambda Functions

  Maximilian E. Schüle, Dimitri Vorona, Linnea Passing, Harald Lang, Alfons Kemper, Stephan Günnemann, Thomas Neumann; EDBT 2019 (poster, webinterface)
• Performance-Optimal Filtering: Bloom Overtakes Cuckoo at High Throughput

  Harald Lang, Thomas Neumann, Alfons Kemper, Peter Boncz; VLDB 2019
• Make the Most out of Your SIMD Investments: Counter Control Flow Divergence in Compiled Query Pipelines

  Harald Lang, Andreas Kipf, Linnea Passing, Peter Boncz, Thomas Neumann, Alfons Kemper; DaMoN 2018 (poster, slides)
• Approximate Geospatial Joins with Precision Guarantees

  Andreas Kipf, Harald Lang, Varun Pandey, Raul Alexandru Persa, Peter Boncz, Thomas Neumann, Alfons Kemper; ICDE 2018
• SQL- and Operator-centric Data Analytics in Relational Main-Memory Databases

  Linnea Passing, Manuel Then, Nina Hubig, Harald Lang, Michael Schreier, Stephan Günnemann, Alfons Kemper, Thomas Neumann; EDBT 2017
• Data Blocks: Hybrid OLTP and OLAP on Compressed Storage using both Vectorization and Compilation

  Harald Lang, Tobias Mühlbauer, Florian Funke, Peter Boncz, Thomas Neumann, Alfons Kemper; ACM SIGMOD 2016 (poster, slides)
• Massively Parallel NUMA-aware Hash Joins

  Harald Lang, Viktor Leis, Martina-Cezara Albutiu, Thomas Neumann, Alfons Kemper; IMDM 2013

Advised / supervised theses

• Approximative Data Aggregation on GPUs

  Maximilian Springer (2018)
• Evaluation of Lightweight Index Structures for Main-Memory Database Systems

  Alexander Beischl (2017)
• Evaluation and Comparison of Data Processing Frameworks for Approximated Geometries in 2D Space: Google S2 and Extended Split Index

  Christian Smutek (2017)
• Efficient In-Browser Query Processing

  Chaoran Chen (2016)
• Aggregation on Coupled CPU-GPU Architectures with Unified Main Memory

  Moritz Sichert (2015)

Teaching

• Winter 2017/2018: Teaching Assistant Grundlagen: Datenbanken
• Winter 2016/2017: Teaching Assistant Grundlagen: Datenbanken
• Winter 2015/2016: Teaching Assistant Grundlagen: Datenbanken
• Winter 2014/2015: Teaching Assistant Grundlagen: Datenbanken
• Summer 2014: Tutor Implementation of Database Systems
• Winter 2013/2014: Tutor Grundlagen: Datenbanken
• Summer 2013: Tutor Implementation of Database Systems