activity
20152026
most citedKOGNAC: Efficient Encoding of Large Knowledge Graphs

12 citations · 38 across the 12 of their papers we have counts for

collaborators

15 papers

cs.AI2026

EvoIdeator: Evolving Scientific Ideas through Checklist-Grounded Reinforcement Learning

Andreas Sauter, Yuyue Zhao, Jacopo Urbani +5

Scientific idea generation is a cornerstone of autonomous knowledge discovery, yet the iterative evolution required to transform initial concepts into high-quality research proposa…

cs.CL2026★ 1 cited

EvoScientist: Towards Multi-Agent Evolving AI Scientists for End-to-End Scientific Discovery

Yougang Lyu, Xi Zhang, Xinhao Yi +11

The increasing adoption of Large Language Models (LLMs) has enabled AI scientists to perform complex end-to-end scientific discovery tasks requiring coordination of specialized rol…

cs.DB2023

Probabilistic Reasoning at Scale: Trigger Graphs to the Rescue

Efthymia Tsamoura, Jaehun Lee, Jacopo Urbani

The role of uncertainty in data management has become more prominent than ever before, especially because of the growing importance of machine learning-driven applications that pro…

cs.AI2022

Chasing Streams with Existential Rules

Jacopo Urbani, Markus Krötzsch, Thomas Eiter

We study reasoning with existential rules to perform query answering over streams of data. On static databases, this problem has been widely studied, but its extension to rapidly c…

cs.CL2021

Tribrid: Stance Classification with Neural Inconsistency Detection

Song Yang, Jacopo Urbani

We study the problem of performing automatic stance classification on social media with neural architectures such as BERT. Although these architectures deliver impressive results,…

cs.AI2021★ 9 cited

Tab2Know: Building a Knowledge Base from Tables in Scientific Papers

Benno Kruit, Hongyu He, Jacopo Urbani

Tables in scientific papers contain a wealth of valuable knowledge for the scientific enterprise. To help the many of us who frequently consult this type of knowledge, we present T…

cs.DB2021

Materializing Knowledge Bases via Trigger Graphs

Efthymia Tsamoura, David Carral, Enrico Malizia +1

The chase is a well-established family of algorithms used to materialize Knowledge Bases (KBs), like Knowledge Graphs (KGs), to tackle important tasks like query answering under de…

cs.DB2020

Adaptive Low-level Storage of Very Large Knowledge Graphs

Jacopo Urbani, Ceriel Jacobs

The increasing availability and usage of Knowledge Graphs (KGs) on the Web calls for scalable and general-purpose solutions to store this type of data structures. We propose Triden…

cs.LO2019★ 1 cited

Checking Chase Termination over Ontologies of Existential Rules with Equality

David Carral, Jacopo Urbani

The chase is a sound and complete algorithm for conjunctive query answering over ontologies of existential rules with equality. To enable its effective use, we can apply acyclicity…

cs.DB2019★ 7 cited

Datalog Reasoning over Compressed RDF Knowledge Bases

Pan Hu, Jacopo Urbani, Boris Motik +1

Materialisation is often used in RDF systems as a preprocessing step to derive all facts implied by given RDF triples and rules. Although widely used, materialisation considers all…

cs.IR2019★ 1 cited

Extracting Novel Facts from Tables for Knowledge Graph Completion (Extended version)

Benno Kruit, Peter Boncz, Jacopo Urbani

We propose a new end-to-end method for extending a Knowledge Graph (KG) from tables. Existing techniques tend to interpret tables by focusing on information that is already in the…

cs.CL2017★ 6 cited

Word Sense Disambiguation with LSTM: Do We Really Need 100 Billion Words?

Minh Le, Marten Postma, Jacopo Urbani

Recently, Yuan et al. (2016) have shown the effectiveness of using Long Short-Term Memory (LSTM) for performing Word Sense Disambiguation (WSD). Their proposed technique outperform…

cs.LO2017

Expressive Stream Reasoning with Laser

Hamid R. Bazoobandi, Harald Beck, Jacopo Urbani

An increasing number of use cases require a timely extraction of non-trivial knowledge from semantically annotated data streams, especially on the Web and for the Internet of Thing…

cs.AI2016★ 12 cited

KOGNAC: Efficient Encoding of Large Knowledge Graphs

Jacopo Urbani, Sourav Dutta, Sairam Gurajada +1

Many Web applications require efficient querying of large Knowledge Graphs (KGs). We propose KOGNAC, a dictionary-encoding algorithm designed to improve SPARQL querying with a judi…

cs.DB2015★ 1 cited

Column-Oriented Datalog Materialization for Large Knowledge Graphs (Extended Technical Report)

Jacopo Urbani, Ceriel Jacobs, Markus Krötzsch

The evaluation of Datalog rules over large Knowledge Graphs (KGs) is essential for many applications. In this paper, we present a new method of materializing Datalog inferences, wh…