Jelle Hellings

According to our database, Jelle Hellings authored at least 39 papers between 2011 and 2023.

Collaborative distances:

• Dijkstra number of four.
• Erdős number of three.

2023

Practical View-Change-Less Protocol through Rapid View Synchronization.

Dakai Kang, Sajjad Rahnama, Jelle Hellings, Mohammad Sadoghi

CoRR, 2023

Expressive Completeness of Two-Variable First-Order Logic with Counting for First-Order Logic Queries on Rooted Unranked Trees.

Jelle Hellings, Marc Gyssens, Jan Van den Bussche, Dirk Van Gucht

LICS, 2023

2022

The power of Tarski's relation algebra on trees.

Jelle Hellings, Yuqing Wu, Marc Gyssens, Dirk Van Gucht

J. Log. Algebraic Methods Program., 2022

On the Correctness of Speculative Consensus.

Jelle Hellings, Suyash Gupta, Sajjad Rahnama, Mohammad Sadoghi

CoRR, 2022

Optimizing Multiset Relational Algebra Queries Using Weak-Equivalent Rewrite Rules.

Jelle Hellings, Yuqing Wu, Dirk Van Gucht, Marc Gyssens

Proceedings of the Foundations of Information and Knowledge Systems, 2022

The Fault-Tolerant Cluster-Sending Problem.

Jelle Hellings, Mohammad Sadoghi

Proceedings of the Foundations of Information and Knowledge Systems, 2022

2021

Fault-Tolerant Distributed Transactions on Blockchain

Suyash Gupta, Jelle Hellings, Mohammad Sadoghi

Synthesis Lectures on Data Management, Morgan & Claypool Publishers, ISBN: 978-3-031-01877-0, 2021

ByShard: Sharding in a Byzantine Environment.

Jelle Hellings, Mohammad Sadoghi

Proc. VLDB Endow., 2021

Byzantine Cluster-Sending in Expected Constant Communication.

Jelle Hellings, Mohammad Sadoghi

CoRR, 2021

From Relation Algebra to Semi-join Algebra: An Approach to Graph Query Optimization.

Jelle Hellings, Catherine L. Pilachowski, Dirk Van Gucht, Marc Gyssens, Yuqing Wu

Comput. J., 2021

RCC: Resilient Concurrent Consensus for High-Throughput Secure Transaction Processing.

Suyash Gupta, Jelle Hellings, Mohammad Sadoghi

Proceedings of the 37th IEEE International Conference on Data Engineering, 2021

Proof-of-Execution: Reaching Consensus through Fault-Tolerant Speculation.

Suyash Gupta, Jelle Hellings, Sajjad Rahnama, Mohammad Sadoghi

Proceedings of the 24th International Conference on Extending Database Technology, 2021

2020

Scalable, Resilient and Configurable Permissioned Blockchain Fabric.

Sajjad Rahnama, Suyash Gupta, Thamir Qadah, Jelle Hellings, Mohammad Sadoghi

Proc. VLDB Endow., 2020

ResilientDB: Global Scale Resilient Blockchain Fabric.

Suyash Gupta, Sajjad Rahnama, Jelle Hellings, Mohammad Sadoghi

Proc. VLDB Endow., 2020

Building High Throughput Permissioned Blockchain Fabrics: Challenges and Opportunities.

Suyash Gupta, Jelle Hellings, Sajjad Rahnama, Mohammad Sadoghi

Proc. VLDB Endow., 2020

Comparing the expressiveness of downward fragments of the relation algebra with transitive closure on trees.

Jelle Hellings, Marc Gyssens, Yuqing Wu, Dirk Van Gucht, Jan Van den Bussche, Stijn Vansummeren, George H. L. Fletcher

Inf. Syst., 2020

Cerberus: Minimalistic Multi-shard Byzantine-resilient Transaction Processing.

Jelle Hellings, Daniel P. Hughes, Joshua Primero, Mohammad Sadoghi

CoRR, 2020

Explaining Results of Path Queries on Graphs - Single-Path Results for Context-Free Path Queries.

Jelle Hellings

Proceedings of the Software Foundations for Data Interoperability and Large Scale Graph Data Analytics, 2020

Stab-Forests: Dynamic Data Structures for Efficient Temporal Query Processing.

Jelle Hellings, Yuqing Wu

Proceedings of the 27th International Symposium on Temporal Representation and Reasoning, 2020

Coordination-Free Byzantine Replication with Minimal Communication Costs.

Jelle Hellings, Mohammad Sadoghi

Proceedings of the 23rd International Conference on Database Theory, 2020

Blockchain consensus unraveled: virtues and limitations.

Suyash Gupta, Jelle Hellings, Sajjad Rahnama, Mohammad Sadoghi

Proceedings of the 14th ACM International Conference on Distributed and Event-based Systems, 2020

2019

Calculi for symmetric queries.

Marc Gyssens, Jelle Hellings, Jan Paredaens, Dirk Van Gucht, Jef Wijsen, Yuqing Wu

J. Comput. Syst. Sci., 2019

Scaling Blockchain Databases through Parallel Resilient Consensus Paradigm.

Suyash Gupta, Jelle Hellings, Mohammad Sadoghi

CoRR, 2019

Revisiting consensus protocols through wait-free parallelization.

Suyash Gupta, Jelle Hellings, Mohammad Sadoghi

CoRR, 2019

First-order definable counting-only queries.

Jelle Hellings, Marc Gyssens, Dirk Van Gucht, Yuqing Wu

Ann. Math. Artif. Intell., 2019

Brief Announcement: The Fault-Tolerant Cluster-Sending Problem.

Jelle Hellings, Mohammad Sadoghi

Proceedings of the 33rd International Symposium on Distributed Computing, 2019

Brief Announcement: Revisiting Consensus Protocols through Wait-Free Parallelization.

Suyash Gupta, Jelle Hellings, Mohammad Sadoghi

Proceedings of the 33rd International Symposium on Distributed Computing, 2019

An In-Depth Look of BFT Consensus in Blockchain: Challenges and Opportunities.

Suyash Gupta, Jelle Hellings, Sajjad Rahnama, Mohammad Sadoghi

Proceedings of the 20th International Middleware Conference Tutorials, 2019

2018

On Tarski's Relation Algebra: Querying trees and chains, and the semi-join algebra

Jelle Hellings

PhD thesis, 2018

Comparing Downward Fragments of the Relational Calculus with Transitive Closure on Trees.

Jelle Hellings, Marc Gyssens, Yuqing Wu, Dirk Van Gucht, Jan Van den Bussche, Stijn Vansummeren, George H. L. Fletcher

CoRR, 2018

2017

From relation algebra to semi-join algebra: an approach for graph query optimization.

Jelle Hellings, Catherine L. Pilachowski, Dirk Van Gucht, Marc Gyssens, Yuqing Wu

Proceedings of The 16th International Symposium on Database Programming Languages, 2017

2016

Implication and axiomatization of functional and constant constraints.

Jelle Hellings, Marc Gyssens, Jan Paredaens, Yuqing Wu

Ann. Math. Artif. Intell., 2016

2015

Path Results for Context-free Grammar Queries on Graphs.

Jelle Hellings

CoRR, 2015

Relative expressive power of downward fragments of navigational query languages on trees and chains.

Jelle Hellings, Marc Gyssens, Yuqing Wu, Dirk Van Gucht, Jan Van den Bussche, Stijn Vansummeren, George H. L. Fletcher

Proceedings of the 15th Symposium on Database Programming Languages, 2015

2014

Conjunctive Context-Free Path Queries.

Jelle Hellings

Proceedings of the Proc. 17th International Conference on Database Theory (ICDT), 2014

Implication and Axiomatization of Functional Constraints on Patterns with an Application to the RDF Data Model.

Jelle Hellings, Marc Gyssens, Jan Paredaens, Yuqing Wu

Proceedings of the Foundations of Information and Knowledge Systems, 2014

2013

Walk logic as a framework for path query languages on graph databases.

Jelle Hellings, Bart Kuijpers, Jan Van den Bussche, Xiaowang Zhang

Proceedings of the Joint 2013 EDBT/ICDT Conferences, 2013

2012

Efficient external-memory bisimulation on DAGs.

Jelle Hellings, George H. L. Fletcher, Herman J. Haverkort

Proceedings of the ACM SIGMOD International Conference on Management of Data, 2012

2011

I/O efficient bisimulation partitioning on very large directed acyclic graphs

Jelle Hellings, George H. L. Fletcher, Herman J. Haverkort

CoRR, 2011