Skip to content

Thomas Neumann

Publication record assembled from the DBLP archive of ranked conferences.

Papers indexed

147

Venues

21

Active years

1982–2026

Best venue rank

A*

Where they publish

Papers

147 indexed papers, newest first.

YearVenueTitleAuthors
2026CIDROn the Vexing Difficulty of Evaluating IN Predicates.Altan Birler, Thomas Neumann
2026DaMoNEvaluating Apple Silicon for Data Processing.Alexander Beischl, Mykola Morozov, Michael Jungmair, Lukas Haussmann, Thomas Neumann
2026DaMoNCompression-Aware LIKE: Matching Patterns in the FSST Domain.Calin-George Pop, Adrian Riedl, Thomas Neumann
2025BTWImproving Unnesting of Complex Queries.Thomas Neumann
2025BTWOptimizing Linearized Join Enumeration by Adapting to the Query Structure.Altan Birler, Mihail Stoian, Thomas Neumann
2025CIDRTrampoline-Style Queries for SQL.Louisa Lambrecht, Torsten Grust, Altan Birler, Thomas Neumann
2024CIDRA Critique of Modern SQL and a Proposal Towards a Simple and Expressive Query Language.Thomas Neumann, Viktor Leis
2024DaMoNSimple, Efficient, and Robust Hash Tables for Join Processing.Altan Birler, Tobias Schmidt, Philipp Fent, Thomas Neumann
2024EDBTAdaptive Compression for Databases.Leon Windheuser, Christoph Anneser, Huanchen Zhang, Thomas Neumann, Alfons Kemper
2024PODSClosing the Gap between Theory and Practice in Query Optimization.Thomas Neumann
2024VLDBCan Delta Compete with Frame-of-Reference for Lightweight Integer Compression?Julia Spindler, Philipp Fent, Adrian Riedl, Thomas Neumann
2023BTWCommunication-Optimal Parallel Reservoir Sampling.Christian Winter, Moritz Sichert, Altan Birler, Thomas Neumann, Alfons Kemper
2023BTWSeamless Integration of Parquet Files into Data Processing.Alice Rey, Michael Freitag, Thomas Neumann
2023BTWNN2SQL: Let SQL Think for Neural Networks.Maximilian Emanuel Schle, Alfons Kemper, Thomas Neumann
2023EDBTBlue Elephants Inspecting Pandas: Inspection and Execution of Machine Learning Pipelines in SQL.Maximilian E. Schle, Luca Scalerandi, Alfons Kemper, Thomas Neumann
2023EDUCONBusiness Plan Ready - An Interdisciplinary Approach in Teaching and Learning how to Start-Up in Biomedical Engineering.Thomas Neumann, Rainer Brck, Olaf Gaus
2023ICDESPA: Economical and Workload-Driven Indexing for Data Analytics in the Cloud.Peter Boncz, Yannis Chronis, Jan Finis, Stefan Halfpap, Viktor Leis, Thomas Neumann, Anisoara Nica, Caetano Sauer, Knut Stolze, Marcin Zukowski
2023VLDBRelation-Based In-Database Stream Processing.Christian Winter, Thomas Neumann, Alfons Kemper
2023VLDBExploiting Code Generation for Efficient LIKE Pattern Matching.Adrian Riedl, Philipp Fent, Maximilian Bandle, Thomas Neumann
2022EDBTArrayQL Integration into Code-Generating Database Systems.Maximilian E. Schle, Tobias Gtz, Alfons Kemper, Thomas Neumann
2022ICCCNRThomas Neumann, Kyle Welsh, Caden Perez, Kewei Sha, Yalong Wu
2022SIGMODAdaptive Hybrid Indexes.Christoph Anneser, Andreas Kipf, Huanchen Zhang, Thomas Neumann, Alfons Kemper
2022SIGMODEfficient Evaluation of Arbitrarily-Framed Holistic SQL Aggregates and Window Functions.Adrian Vogelsgesang, Thomas Neumann, Viktor Leis, Alfons Kemper
2022SSDBMRecursive SQL for Data Mining.Maximilian Emanuel Schle, Alfons Kemper, Thomas Neumann
2021BTWUmbra as a Time Machine.Lukas Karnowski, Maximilian E. Schle, Alfons Kemper, Thomas Neumann
2021BTWB²-Tree: Cache-Friendly String Indexing within B-Trees.Josef Schmeier, Maximilian E. Schle, Viktor Leis, Thomas Neumann, Alfons Kemper
2021EDBTGeoBlocks: A Query-Cache Accelerated Data Structure for Spatial Aggregation over Polygons.Christian Winter, Andreas Kipf, Christoph Anneser, Eleni Tzirita Zacharatou, Thomas Neumann, Alfons Kemper
2021EuroSysProfiling dataflow systems on multiple abstraction levels.Alexander Beischl, Timo Kersten, Maximilian Bandle, Jana Giceva, Thomas Neumann
2021SIGMODTo Partition, or Not to Partition, That is the Join Question in a Real System.Maximilian Bandle, Jana Giceva, Thomas Neumann
2021SIGMODJSON Tiles: Fast Analytics on Semi-Structured Data.Dominik Durner, Viktor Leis, Thomas Neumann
2021SIGMODA Tailored Regression for Learned Indexes: Logarithmic Error Regression.Martin Eppert, Philipp Fent, Thomas Neumann
2021SIGMODBuilding Advanced SQL Analytics From Low-Level Plan Operators.Andr Kohn, Viktor Leis, Thomas Neumann
2021SIGMODTardisDB: Extending SQL to Support Versioning.Maximilian E. Schle, Josef Schmeier, Thomas Blum, Alfons Kemper, Thomas Neumann
2021SIGMODSelf-Tuning Query Scheduling for Analytical Workloads.Benjamin Wagner, Andr Kohn, Thomas Neumann
2021SSDBMArrayQL for Linear Algebra within Umbra.Maximilian E. Schle, Tobias Gtz, Alfons Kemper, Thomas Neumann
2021SSDBMIn-Database Machine Learning with SQL on GPUs.Maximilian E. Schle, Harald Lang, Maximilian Springer, Alfons Kemper, Thomas Neumann, Stephan Gnnemann
2020ADBISARTful Skyline Computation for In-Memory Database Systems.Maximilian E. Schle, Alex Kulikov, Alfons Kemper, Thomas Neumann
2020CIDRUmbra: A Disk-Based System with In-Memory Performance.Thomas Neumann, Michael J. Freitag
2020DaMoNConcurrent online sampling for all, for free.Altan Birler, Bernhard Radke, Thomas Neumann
2020DaMoNScalable and robust latches for database systems.Jan Bttcher, Viktor Leis, Jana Giceva, Thomas Neumann, Alfons Kemper
2020EDBTThe Case for Hybrid Succinct Data Structures.Christoph Anneser, Andreas Kipf, Harald Lang, Thomas Neumann, Alfons Kemper
2020EDBTAdaptive 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
2020ICDESTART - Self-Tuning Adaptive Radix Tree.Philipp Fent, Michael Jungmair, Andreas Kipf, Thomas Neumann
2020ICDELow-Latency Communication for Fast DBMS Using RDMA and Shared Memory.Philipp Fent, Alexander van Renen, Andreas Kipf, Viktor Leis, Thomas Neumann, Alfons Kemper
2020SIGMODRethinking Logging, Checkpoints, and Recovery for High-Performance Storage Engines.Michael Haubenschild, Caetano Sauer, Thomas Neumann, Viktor Leis
2020SIGMODOn another level: how to debug compiling query engines.Timo Kersten, Thomas Neumann
2020SIGMODRadixSpline: a single-pass learned index.Andreas Kipf, Ryan Marcus, Alexander van Renen, Mihail Stoian, Alfons Kemper, Tim Kraska, Thomas Neumann
2020SIGMODTree-Encoded Bitmaps.Harald Lang, Alexander Beischl, Viktor Leis, Peter Boncz, Thomas Neumann, Alfons Kemper
2020SSDBMFreedom for the SQL-Lambda: Just-in-Time-Compiling User-Injected Functions in PostgreSQL.Maximilian E. Schle, Jakob Huber, Alfons Kemper, Thomas Neumann
2019BTWLinDP++: Generalizing Linearized DP to Crossproducts and Non-Inner Joins.Bernhard Radke, Thomas Neumann
2019BTWDFG Priority Program SPP 2037: Scalable Data Management for Future Hardware.Kai-Uwe Sattler, Alfons Kemper, Thomas Neumann, Jens Teubner
2019BTWJa-(zu-)SQL: Evaluation einer SQL-Skriptsprache fr Hauptspeicherdatenbanksysteme.Maximilian E. Schle, Linnea Passing, Alfons Kemper, Thomas Neumann
2019BTWIn-Database Machine Learning: Gradient Descent and Tensor Algebra for Main Memory Database Systems.Maximilian E. Schle, Frdric Simonis, Thomas Heyenbrock, Alfons Kemper, Stephan Gnnemann, Thomas Neumann
2019BTWDomain Query Optimization: Adapting the General-Purpose Database System Hyper for Tableau Workloads.Adrian Vogelsgesang, Tobias Mhlbauer, Viktor Leis, Thomas Neumann, Alfons Kemper
2019CIDREvery Row Counts: Combining Sketches and Sampling for Accurate Group-By Result Estimates.Michael J. Freitag, Thomas Neumann
2019DaMoNOn the Impact of Memory Allocation on High-Performance Query Processing.Dominik Durner, Viktor Leis, Thomas Neumann
2019DaMoNPersistent Memory I/O Primitives.Alexander van Renen, Lukas Vogel, Viktor Leis, Thomas Neumann, Alfons Kemper
2019EDBTML2SQL - Compiling a Declarative Machine Learning Language to SQL and Python.Maximilian E. Schle, Matthias Bungeroth, Dimitri Vorona, Alfons Kemper, Stephan Gnnemann, Thomas Neumann
2019EDBTThe Power of SQL Lambda Functions.Maximilian E. Schle, Dimitri Vorona, Linnea Passing, Harald Lang, Alfons Kemper, Stephan Gnnemann, Thomas Neumann
2019ICDENo False Negatives: Accepting All Useful Schedules in a Fast Serializable Many-Core System.Dominik Durner, Thomas Neumann
2019SIGMODEstimating Cardinalities with Deep Sketches.Andreas Kipf, Dimitri Vorona, Jonas Mller, Thomas Kipf, Bernhard Radke, Viktor Leis, Peter Boncz, Thomas Neumann, Alfons Kemper
2019SIGMODDaMoN 19: The 15th International Workshop on Data Management on New Hardware.Thomas Neumann, Ken Salem
2019SIGMODMLearn: A Declarative Machine Learning Language for Database Systems.Maximilian E. Schle, Matthias Bungeroth, Alfons Kemper, Stephan Gnnemann, Thomas Neumann
2019SSDBMVersioning in Main-Memory Database Systems: From MusaeusDB to TardisDB.Maximilian E. Schle, Lukas Karnowski, Josef Schmeier, Benedikt Kleiner, Alfons Kemper, Thomas Neumann
2018DaMoNMake 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
2018ICAISCDirect Incorporation of L_1 -Regularization into Generalized Matrix Learning Vector Quantization.Falko Lischke, Thomas Neumann, Sven Hellbach, Thomas Villmann, Hans-Joachim Bhme
2018ICDEApproximate Geospatial Joins with Precision Guarantees.Andreas Kipf, Harald Lang, Varun Pandey, Raul Alexandru Persa, Peter Boncz, Thomas Neumann, Alfons Kemper
2018ICDEAdaptive Execution of Compiled Queries.Andr Kohn, Viktor Leis, Thomas Neumann
2018ICDELeanStore: In-Memory Data Management beyond Main Memory.Viktor Leis, Michael Haubenschild, Alfons Kemper, Thomas Neumann
2018ICDEReasoning in the Presence of NULLs.Thomas Neumann
2018SIGMODAdaptive Optimization of Very Large Join Queries.Thomas Neumann, Bernhard Radke
2018SIGMODManaging Non-Volatile Memory in Database Systems.Alexander van Renen, Viktor Leis, Alfons Kemper, Thomas Neumann, Takushi Hashida, Kazuichi Oe, Yoshiyasu Doi, Lilian Harada, Mitsuru Sato
2018SIGMODGet Real: How Benchmarks Fail to Represent the Real World.Adrian Vogelsgesang, Michael Haubenschild, Jan Finis, Alfons Kemper, Viktor Leis, Tobias Mhlbauer, Thomas Neumann, Manuel Then
2017BTWThe Complete Story of Joins (in HyPer).Thomas Neumann, Viktor Leis, Alfons Kemper
2017BTWEfficient Batched Distance and Centrality Computation in Unweighted and Weighted Graphs.Manuel Then, Stephan Gnnemann, Alfons Kemper, Thomas Neumann
2017CIDRCardinality Estimation Done Right: Index-Based Join Sampling.Viktor Leis, Bernhard Radke, Andrey Gubichev, Alfons Kemper, Thomas Neumann
2017CIKMHyPerInsight: Data Exploration Deep Inside HyPer.Nina C. Hubig, Linnea Passing, Maximilian E. Schle, Dimitri Vorona, Alfons Kemper, Thomas Neumann
2017EDBTParallel Array-Based Single- and Multi-Source Breadth First Searches on Large Dense Graphs.Moritz Kaufmann, Manuel Then, Alfons Kemper, Thomas Neumann
2017EDBTAnalytics on Fast Data: Main-Memory Database Systems versus Modern Streaming Systems.Andreas Kipf, Varun Pandey, Jan Bttcher, Lucas Braun, Thomas Neumann, Alfons Kemper
2017EDBTSQL- and Operator-centric Data Analytics in Relational Main-Memory Databases.Linnea Passing, Manuel Then, Nina C. Hubig, Harald Lang, Michael Schreier, Stephan Gnnemann, Alfons Kemper, Thomas Neumann
2017SIGGRAPHCombining biomechanical and data-driven body surface models.Stefanie Gassel, Thomas Neumann, Markus Wacker
2016DaMoNThe ART of practical synchronization.Viktor Leis, Florian Scheibner, Alfons Kemper, Thomas Neumann
2016ICDEFlow-Join: Adaptive skew handling for distributed joins over high-speed networks.Wolf Rdiger, Sam Idicula, Alfons Kemper, Thomas Neumann
2016SIGMODData Blocks: Hybrid OLTP and OLAP on Compressed Storage using both Vectorization and Compilation.Harald Lang, Tobias Mhlbauer, Florian Funke, Peter Boncz, Thomas Neumann, Alfons Kemper
2016SIGMODHigh-Performance Geospatial Analytics in HyPerSpace.Varun Pandey, Andreas Kipf, Dimitri Vorona, Tobias Mhlbauer, Thomas Neumann, Alfons Kemper
2015BTWUnnesting Arbitrary Queries.Thomas Neumann, Alfons Kemper
2015BTWHochperformante Analyse von Graph-Datenbanken.Moritz Kaufmann, Tobias Mhlbauer, Manuel Then, Andrey Gubichev, Alfons Kemper, Thomas Neumann
2015ICDESupporting hierarchical data in SAP HANA.Robert Brunel, Jan Finis, Gerald Franz, Norman May, Alfons Kemper, Thomas Neumann, Franz Frber
2015SIGMODFast Serializable Multi-Version Concurrency Control for Main-Memory Database Systems.Thomas Neumann, Tobias Mhlbauer, Alfons Kemper
2015SIGMODHigh-Performance Main-Memory Database Systems and Modern Virtualization: Friends or Foes?Tobias Mhlbauer, Wolf Rdiger, Andreas Kipf, Alfons Kemper, Thomas Neumann
2014DaMoNHeterogeneity-conscious parallel query execution: getting a better mileage while driving faster!Tobias Mhlbauer, Wolf Rdiger, Robert Seilbeck, Alfons Kemper, Thomas Neumann
2014EDBTExploiting the query structure for efficient join ordering in SPARQL queries.Andrey Gubichev, Thomas Neumann
2014ICDEMain-memory database systems.Alfons Kemper, Thomas Neumann
2014ICDEExploiting hardware transactional memory in main-memory databases.Viktor Leis, Alfons Kemper, Thomas Neumann
2014ICDELocality-sensitive operators for parallel main-memory database clusters.Wolf Rdiger, Tobias Mhlbauer, Philipp Unterbrunner, Angelika Reiser, Alfons Kemper, Thomas Neumann
2014SIGMODOn-the-fly token similarity joins in relational databases.Nikolaus Augsten, Armando Miraglia, Thomas Neumann, Alfons Kemper
2014SIGMODMorsel-driven parallelism: a NUMA-aware query evaluation framework for the many-core age.Viktor Leis, Peter Boncz, Alfons Kemper, Thomas Neumann
2014SIGMODOne DBMS for all: the brawny few and the wimpy crowd.Tobias Mhlbauer, Wolf Rdiger, Robert Seilbeck, Angelika Reiser, Alfons Kemper, Thomas Neumann
2013BTWStudierendenprogramm: Aufruf zu Beitrgen.Thomas Neumann
2013BTWTaking the Edge off Cardinality Estimation Errors using Incremental Execution.Thomas Neumann, Csar A. Galindo-Legaria
2013BTWExtending the MPSM Join.Martina-Cezara Albutiu, Alfons Kemper, Thomas Neumann
2013BTWScyPer: A Hybrid OLTP&OLAP Distributed Main Memory Database System for Scalable Real-Time Analytics.Tobias Mhlbauer, Wolf Rdiger, Angelika Reiser, Alfons Kemper, Thomas Neumann
2013CIDRExecuting Long-Running Transactions in Synchronization-Free Main Memory Database Systems.Henrik Mhe, Alfons Kemper, Thomas Neumann
2013ICDEThe adaptive radix tree: ARTful indexing for main-memory databases.Viktor Leis, Alfons Kemper, Thomas Neumann
2013ICDECPU and cache efficient management of memory-resident databases.Holger Pirk, Florian Funke, Martin Grund, Thomas Neumann, Ulf Leser, Stefan Manegold, Alfons Kemper, Martin L. Kersten
2013SIGMODDeltaNI: an efficient labeling scheme for versioned hierarchical data.Jan Finis, Robert Brunel, Alfons Kemper, Thomas Neumann, Franz Frber, Norman May
2013SIGMODScyPer: elastic OLAP throughput on transactional data.Tobias Mhlbauer, Wolf Rdiger, Angelika Reiser, Alfons Kemper, Thomas Neumann
2013VLDBMassively Parallel NUMA-Aware Hash Joins.Harald Lang, Viktor Leis, Martina-Cezara Albutiu, Thomas Neumann, Alfons Kemper
2013VLDBMassively Parallel NUMA-aware Hash Joins.Harald Lang, Viktor Leis, Martina-Cezara Albutiu, Thomas Neumann, Alfons Kemper
2013VLDBAn Evaluation of Strict Timestamp Ordering Concurrency Control for Main-Memory Database Systems.Henrik Mhe, Stephan Wolf, Alfons Kemper, Thomas Neumann
2013VLDBAn Evaluation of Strict Timestamp Ordering Concurrency Control for Main-Memory Database Systems.Stephan Wolf, Henrik Mhe, Alfons Kemper, Thomas Neumann
2012ADBISGet Tracked: A Triple Store for RFID Traceability Data.Veneta Dobreva, Martina-Cezara Albutiu, Robert Brunel, Thomas Neumann, Alfons Kemper
2012CIKMFast approximation of steiner trees in large graphs.Andrey Gubichev, Thomas Neumann
2012EDBTThe mainframe strikes back: elastic multi-tenancy using main memory database systems on a many-core server.Henrik Mhe, Alfons Kemper, Thomas Neumann
2012ICDEEffective and Robust Pruning for Top-Down Join Enumeration Algorithms.Pit Fender, Guido Moerkotte, Thomas Neumann, Viktor Leis
2012SIGGRAPHHigh detail marker based 3D reconstruction by enforcing multiview constraints.Thomas Neumann, Markus Wacker, Kiran Varanasi, Christian Theobalt, Marcus A. Magnor
2011BTWBenchmarking Hybrid OLTP&OLAP Database Systems.Florian Funke, Alfons Kemper, Thomas Neumann
2011DaMoNHow to efficiently snapshot transactional data: hardware or software controlled?Henrik Mhe, Alfons Kemper, Thomas Neumann
2011ICDEHyPer: A hybrid OLTP&OLAP main memory database system based on virtual memory snapshots.Alfons Kemper, Thomas Neumann
2011ICDECharacteristic sets: Accurate cardinality estimation for RDF queries with multiple joins.Thomas Neumann, Guido Moerkotte
2011SIGMODThe mixed workload CH-benCHmark.Richard L. Cole, Florian Funke, Leo Giakoumakis, Wey Guy, Alfons Kemper, Stefan Krompass, Harumi A. Kuno, Raghunath Othayoth Nambiar, Thomas Neumann, Meikel Poess, Kai-Uwe Sattler, Michael Seibold, Eric Simon, Florian Waas
2010SIGMODActive knowledge: dynamically enriching RDF knowledge bases by web services.Nicoleta Preda, Gjergji Kasneci, Fabian M. Suchanek, Thomas Neumann, Wenjun Yuan, Gerhard Weikum
2009BTWA Framework for Reasoning about Share Equivalence and Its Integration into a Plan Generator.Thomas Neumann, Guido Moerkotte
2009SIGMODQuery simplification: graceful degradation for join-order optimization.Thomas Neumann
2009SIGMODScalable join processing on very large RDF graphs.Thomas Neumann, Gerhard Weikum
2008ICDEExploiting social relations for query expansion and result ranking.Matthias Bender, Tom Crecelius, Mouna Kacimi, Sebastian Michel, Thomas Neumann, Josiane Xavier Parreira, Ralf Schenkel, Gerhard Weikum
2008ICDEFaster Join Enumeration for Complex Queries.Guido Moerkotte, Thomas Neumann
2008PODSNear-optimal dynamic replication in unstructured peer-to-peer networks.Mauro Sozio, Thomas Neumann, Gerhard Weikum
2008SIGIRSocial recommendations at work.Tom Crecelius, Mouna Kacimi, Sebastian Michel, Thomas Neumann, Josiane Xavier Parreira, Ralf Schenkel, Gerhard Weikum
2008SIGIREfficient top-k querying over social-tagging networks.Ralf Schenkel, Tom Crecelius, Mouna Kacimi, Sebastian Michel, Thomas Neumann, Josiane Xavier Parreira, Gerhard Weikum
2008SIGMODDynamic programming strikes back.Guido Moerkotte, Thomas Neumann
2008WISEOptimizing Distributed Top-k Queries.Thomas Neumann, Matthias Bender, Sebastian Michel, Ralf Schenkel, Peter Triantafillou, Gerhard Weikum
2007BTWAlgebraic Query Optimization for Distributed Top-k Queries.Thomas Neumann, Sebastian Michel
2007DEXAIndexing Set-Valued Attributes with a Multi-level Extendible Hashing Scheme.Sven Helmer, Robin Aly, Thomas Neumann, Guido Moerkotte
2007DEXAOptimizing Ranked Retrieval.Thomas Neumann
2007SIGIRA time machine for text search.Klaus Berberich, Srikanta J. Bedathur, Thomas Neumann, Gerhard Weikum
2007VLDBFluxCapacitor: Efficient Time-Travel Text Search.Klaus Berberich, Srikanta J. Bedathur, Thomas Neumann, Gerhard Weikum
2006VLDBAnalysis of Two Existing and One New Dynamic Programming Algorithm for the Generation of Optimal Bushy Join Trees without Cross Products.Guido Moerkotte, Thomas Neumann
2005ICDEOn the Optimal Ordering of Maps and Selections under Factorization.Thomas Neumann, Sven Helmer, Guido Moerkotte
2004ICDEAn Efficient Framework for Order Optimization.Thomas Neumann, Guido Moerkotte
2004VLDBA Combined Framework for Grouping and Order Optimization.Thomas Neumann, Guido Moerkotte
2003VLDBEstimating the Output Cardinality of Partial Preaggregation with a Measure of Clusteredness.Sven Helmer, Thomas Neumann, Guido Moerkotte
2001EuroPLopBusiness Component System.Thomas Neumann
1991BTWEin Datenbankserver fr ein Planungsuntersttzungssystem.Thomas Neumann
1989GIDas UIMS THESEUS.Matthias Muth, Thomas Neumann
1983SIGMODOn Representing the Design Information in a Common Database.Thomas Neumann
1982VLDBConsistency and Transactions in CAD Database.Thomas Neumann, Christoph Hornung