Jelle Hellings

Publication Activity (10 Years)

Years Active: 2011-2024
Publications (10 Years): 39

Top Topics

Transaction Processing

Relation Algebra

Top Venues

Proc. VLDB Endow.

Ann. Math. Artif. Intell.

Publications

Dakai Kang, Sajjad Rahnama, Jelle Hellings, Mohammad Sadoghi
SpotLess: Concurrent Rotational Consensus Made Practical Through Rapid View Synchronization. ICDE (2024)
Dakai Kang, Sajjad Rahnama, Jelle Hellings, Mohammad Sadoghi
Practical View-Change-Less Protocol through Rapid View Synchronization. CoRR (2023)
Jelle Hellings, Daniel P. Hughes, Joshua Primero, Mohammad Sadoghi
[Problem] Cerberus: Minimalistic Multi-shard Byzantine-resilient Transaction Processing. J. Syst. Res. 3 (1) (2023)
Jelle Hellings, Marc Gyssens, Jan Van den Bussche, Dirk Van Gucht
Expressive Completeness of Two-Variable First-Order Logic with Counting for First-Order Logic Queries on Rooted Unranked Trees. LICS (2023)
Jelle Hellings, Mohammad Sadoghi
[Solution] Byzantine Cluster-Sending in Expected Constant Cost and Constant Time. J. Syst. Res. 3 (1) (2023)
Jelle Hellings, Mohammad Sadoghi
ByShard: sharding in a Byzantine environment. VLDB J. 32 (6) (2023)
Jelle Hellings, Suyash Gupta, Sajjad Rahnama, Mohammad Sadoghi
On the Correctness of Speculative Consensus. CoRR (2022)
Jelle Hellings, Mohammad Sadoghi
The Fault-Tolerant Cluster-Sending Problem. FoIKS (2022)
Jelle Hellings, Yuqing Wu, Marc Gyssens, Dirk Van Gucht
The power of Tarski's relation algebra on trees. J. Log. Algebraic Methods Program. 126 (2022)
Jelle Hellings, Yuqing Wu, Dirk Van Gucht, Marc Gyssens
Optimizing Multiset Relational Algebra Queries Using Weak-Equivalent Rewrite Rules. FoIKS (2022)
Suyash Gupta, Jelle Hellings, Mohammad Sadoghi
RCC: Resilient Concurrent Consensus for High-Throughput Secure Transaction Processing. ICDE (2021)
Jelle Hellings, Catherine L. Pilachowski, Dirk Van Gucht, Marc Gyssens, Yuqing Wu
From Relation Algebra to Semi-join Algebra: An Approach to Graph Query Optimization. Comput. J. 64 (5) (2021)
Suyash Gupta, Jelle Hellings, Sajjad Rahnama, Mohammad Sadoghi
Proof-of-Execution: Reaching Consensus through Fault-Tolerant Speculation. EDBT (2021)
Jelle Hellings, Mohammad Sadoghi
Byzantine Cluster-Sending in Expected Constant Communication. CoRR (2021)
Jelle Hellings, Mohammad Sadoghi
ByShard: Sharding in a Byzantine Environment. Proc. VLDB Endow. 14 (11) (2021)
Suyash Gupta, Jelle Hellings, Sajjad Rahnama, Mohammad Sadoghi
Blockchain consensus unraveled: virtues and limitations. DEBS (2020)
Jelle Hellings
Explaining Results of Path Queries on Graphs - Single-Path Results for Context-Free Path Queries. SFDI/LSGDA@VLDB (2020)
Suyash Gupta, Jelle Hellings, Sajjad Rahnama, Mohammad Sadoghi
Building High Throughput Permissioned Blockchain Fabrics: Challenges and Opportunities. Proc. VLDB Endow. 13 (12) (2020)
Jelle Hellings, Mohammad Sadoghi
Coordination-Free Byzantine Replication with Minimal Communication Costs. ICDT (2020)
Jelle Hellings, Marc Gyssens, Yuqing Wu, Dirk Van Gucht, Jan Van den Bussche, Stijn Vansummeren, George H. L. Fletcher
Comparing the expressiveness of downward fragments of the relation algebra with transitive closure on trees. Inf. Syst. 89 (2020)
Sajjad Rahnama, Suyash Gupta, Thamir Qadah, Jelle Hellings, Mohammad Sadoghi
Scalable, Resilient and Configurable Permissioned Blockchain Fabric. Proc. VLDB Endow. 13 (12) (2020)
Suyash Gupta, Sajjad Rahnama, Jelle Hellings, Mohammad Sadoghi
ResilientDB: Global Scale Resilient Blockchain Fabric. Proc. VLDB Endow. 13 (6) (2020)
Jelle Hellings, Daniel P. Hughes, Joshua Primero, Mohammad Sadoghi
Cerberus: Minimalistic Multi-shard Byzantine-resilient Transaction Processing. CoRR (2020)
Jelle Hellings, Yuqing Wu
Stab-Forests: Dynamic Data Structures for Efficient Temporal Query Processing. TIME (2020)
Suyash Gupta, Sajjad Rahnama, Jelle Hellings, Mohammad Sadoghi
ResilientDB: Global Scale Resilient Blockchain Fabric. CoRR (2020)
Jelle Hellings, Marc Gyssens, Dirk Van Gucht, Yuqing Wu
First-order definable counting-only queries. Ann. Math. Artif. Intell. 87 (1-2) (2019)
Suyash Gupta, Jelle Hellings, Sajjad Rahnama, Mohammad Sadoghi
Proof-of-Execution: Reaching Consensus through Fault-Tolerant Speculation. CoRR (2019)
Marc Gyssens, Jelle Hellings, Jan Paredaens, Dirk Van Gucht, Jef Wijsen, Yuqing Wu
Calculi for symmetric queries. J. Comput. Syst. Sci. 105 (2019)
Suyash Gupta, Jelle Hellings, Mohammad Sadoghi
Revisiting consensus protocols through wait-free parallelization. CoRR (2019)
Jelle Hellings, Mohammad Sadoghi
Brief Announcement: The Fault-Tolerant Cluster-Sending Problem. DISC (2019)
Suyash Gupta, Jelle Hellings, Sajjad Rahnama, Mohammad Sadoghi
An In-Depth Look of BFT Consensus in Blockchain: Challenges and Opportunities. Middleware Tutorials (2019)
Suyash Gupta, Jelle Hellings, Mohammad Sadoghi
Scaling Blockchain Databases through Parallel Resilient Consensus Paradigm. CoRR (2019)
Suyash Gupta, Jelle Hellings, Mohammad Sadoghi
Brief Announcement: Revisiting Consensus Protocols through Wait-Free Parallelization. DISC (2019)
Jelle Hellings, Mohammad Sadoghi
The fault-tolerant cluster-sending problem. CoRR (2019)
Jelle Hellings, Marc Gyssens, Yuqing Wu, Dirk Van Gucht, Jan Van den Bussche, Stijn Vansummeren, George H. L. Fletcher
Comparing Downward Fragments of the Relational Calculus with Transitive Closure on Trees. CoRR (2018)
Jelle Hellings, Marc Gyssens, Dirk Van Gucht, Yuqing Wu
First-Order Definable Counting-Only Queries. FoIKS (2018)
Jelle Hellings, Yuqing Wu, Marc Gyssens, Dirk Van Gucht
The Power of Tarski's Relation Algebra on Trees. FoIKS (2018)
Jelle Hellings, Catherine L. Pilachowski, Dirk Van Gucht, Marc Gyssens, Yuqing Wu
From relation algebra to semi-join algebra: an approach for graph query optimization. DBPL (2017)
Jelle Hellings, Marc Gyssens, Jan Paredaens, Yuqing Wu
Implication and axiomatization of functional and constant constraints. Ann. Math. Artif. Intell. 76 (3-4) (2016)
Jelle Hellings
Path Results for Context-free Grammar Queries on Graphs. CoRR (2015)
Jelle Hellings, Marc Gyssens, Yuqing Wu, Dirk Van Gucht, Jan Van den Bussche, Stijn Vansummeren, George H. L. Fletcher
Relative expressive power of downward fragments of navigational query languages on trees and chains. DBPL (2015)
Jelle Hellings, Marc Gyssens, Jan Paredaens, Yuqing Wu
Implication and Axiomatization of Functional Constraints on Patterns with an Application to the RDF Data Model. FoIKS (2014)
Jelle Hellings
Conjunctive Context-Free Path Queries. ICDT (2014)
Jelle Hellings, Bart Kuijpers, Jan Van den Bussche, Xiaowang Zhang
Walk logic as a framework for path query languages on graph databases. ICDT (2013)
Jelle Hellings, George H. L. Fletcher, Herman J. Haverkort
Efficient external-memory bisimulation on DAGs. SIGMOD Conference (2012)
Jelle Hellings, George H. L. Fletcher, Herman J. Haverkort
I/O efficient bisimulation partitioning on very large directed acyclic graphs CoRR (2011)