Knowledge Graphs at Scale

Deliverables

Innovation and exploitation prototypes and guidelines

The application and evaluation of the proposed best practices in healthcare, biomedical and financial domains, and the provision of general guidelines for the development of innovative products and services based on KGs that benefit citizens, the economy and society.

Syntax Formalisms for Representing KGs

Describes abstract and concrete syntaxes for representing hybrid representations with constraints and allows for representation learning.

Legally and ethically sound innovation best practices

Provide best practices in terms of legally and ethically sound innovation methods, processes and standards.

Semantic Representations for KGs

Describes interacting semantics for syntactic modules.

Maintenance of KGs

Describes the current approaches to the maintenance of KGs which integrate continuously-updated resources and the new solutions proposed in T2.3.

Knowledge Graph Operators

Provides software and scientific documentation about accomplished developments and evaluation of knowledge graph operators.

Knowledge Graph Data Structures

Describes the state of the art and specifies data structures suitable for storing knowledge graphs as developed in T3.1 and T3.2.

Construction of KGs

Describes the state of the art in constructing KGs and the innovative approaches put forward during T2.2 (a first approach in a first version of the deliverable and an improved version with a second version of the deliverable).

Dissemination Training for ESRs

This report will summarize the actions taken to train the ESRs w.r.t disseminating their results efficiently and effectively.

Website

This deliverable will give a brief overview of the website including its design and functionality.

Publications

Native Execution of GraphQL Queries over RDF Graphs Using Multi-Way Joins

Author(s): Nikolaos Karalis, Alexander Bigerl, Axel-Cyrille Ngonga Ngomo
Published in: Knowledge Graphs: Semantics, Machine Learning, and Languages, Issue Volume 56, 2023, Page(s) 77-93
Publisher: IOS Press
DOI: 10.3233/ssw230007

Personal Knowledge Graphs: Use Cases in e-learning Platforms

Author(s): Ilkou, Eleni
Published in: Companion Proceedings of the Web Conference 2022 (WWW '22 Companion), 2022, ISBN 978-1-4503-9130-6
Publisher: Association for Computing Machinery
DOI: 10.1145/3487553.3524196

NPCS: Native Provenance Computation for SPARQL

Author(s): Zubaria Asma, Daniel Hernández, Luis Galárraga, Giorgos Flouris, Irini Fundulaki, Katja Hose
Published in: WWW '24: Proceedings of the ACM on Web Conference 2024, 2024, Page(s) 2085-2093
Publisher: ACM
DOI: 10.1145/3589334.3645557

Cross-lingual AMR Aligner: Paying Attention to Cross-Attention

Author(s): Martinez Lorenzo, Abelardo Carlos; Huguet Cabot, Pere Lluís; Navigli, Roberto
Published in: Findings of the Association for Computational Linguistics: ACL 2023, Issue 2023, 2023, Page(s) 1726–1742
Publisher: ACL
DOI: 10.18653/v1/2023.findings-acl.109

Exploring the Potential of Knowledge Graphs to Support Distant Knowledge Search for Innovation

Author(s): Dawa Chang
Published in: 13th ACM Web Science Conference 2021, Issue June 2021, 2021, Page(s) 147-148, ISBN 978-1-4503-8525-1
Publisher: Association for Computing Machinery
DOI: 10.1145/3462741.346667

Neural Class Expression Synthesis

Author(s): N’Dah Jean Kouagou, Stefan Heindorf, Caglar Demir, Axel-Cyrille Ngonga Ngomo
Published in: Proceedings of the 17th International Workshop on Neural-Symbolic Learning and Reasoning (NeSy), 2023, Page(s) 430-431, ISSN 1613-0073
Publisher: CEUR

EduCOR: An Educational and Career-Oriented Recommendation Ontology

Author(s): Eleni Ilkou, Hasan Abu-Rasheed, Mohammadreza Tavakoli, Sherzod Hakimov, Gábor Kismihók, Sören Auer, Wolfgang Nejdl
Published in: The Semantic Web – ISWC 2021, Lecture Notes in Computer Science, 2021, Page(s) 546-562, ISBN 978-3-030-88361-4
Publisher: Springer International Publishing
DOI: 10.1007/978-3-030-88361-4_32

NestE: Modeling Nested Relational Structures for Knowledge Graph Reasoning

Author(s): Bo Xiong, Mojtaba Nayyeri, Linhao Luo, Zihao Wang, Shirui Pan, Steffen Staab
Published in: Proceedings of the AAAI Conference on Artificial Intelligence, Issue 2024-03-24, 2024
Publisher: AAAI
DOI: 10.1609/aaai.v38i8.28772

Ultrahyperbolic Knowledge Graph Embeddings

Author(s): Bo Xiong; Shichao Zhu; Mojtaba Nayyeri; Chengjin Xu; Shirui Pan; Chuan Zhou; Steffen Staab
Published in: ACM SIGKDD Conference on Knowledge Discovery and Data Mining, KDD-22, 2022, Page(s) Pages 2130–2139
Publisher: ACM
DOI: 10.1145/3534678.3539333

AMRs Assemble! Learning to Ensemble with Autoregressive Models for AMR Parsing

Author(s): Abelardo Carlos Martínez Lorenzo, Pere Lluís Huguet Cabot, Roberto Navigli
Published in: Proceedings of the 61st Annual Meeting of the Association for Computational Linguistics (Volume 2: Short Papers), Issue 2023, 2023
Publisher: Association for Computational Linguistics
DOI: 10.18653/v1/2023.acl-short.137

A Semantic Policy Language for Usage Control

Author(s): Ines Akaichi and Sabrina Kirrane
Published in: Posters, Demos and Workshops at SEMANTiCS 2022, 2022
Publisher: CEUR Workshop Proceedings

Pseudo-Riemannian Graph Convolutional Networks

Author(s): Bo Xiong, Shichao Zhu, Nico Potyka, Shirui Pan, Chuan Zhou, Steffen Staab
Published in: 36th Conference on Neural Information Processing Systems (NeurIPS 2022), Issue 31 October 2022, 2022
Publisher: Openreivew

(Semi-) Automatic Construction of Knowledge Graph Metadata

Author(s): Maryam Mohammadi
Published in: The Semantic Web: ESWC 2022 Satellite Events, 2022
Publisher: Springer-Verlag
DOI: 10.1007/978-3-031-11609-4_32

Faithful Embeddings for EL++ Knowledge Bases

Author(s): Bo Xiong; Nico Potyka; Trung-Kien Tran; Mojtaba Nayyeri; Steffen Staab
Published in: ISWC 2022: 21st International Semantic Web Conference, 2022, Page(s) Pages 22–38
Publisher: Springer
DOI: 10.1007/978-3-031-19433-7_2

Semantic Technology based Usage Control for Decentralized Systems

Author(s): Ines Akaichi
Published in: Proceedings of the Doctoral Consortium at ISWC 2022, 2022
Publisher: CEUR Workshop Proceedings

RED$^{\rm FM}$: a Filtered and Multilingual Relation Extraction Dataset

Author(s): Cabot, Pere-Lluís Huguet; Tedeschi, Simone; Ngomo, Axel-Cyrille Ngonga; Navigli, Roberto
Published in: Proceedings of the 61st Annual Meeting of the Association for Computational Linguistics, Issue July 2023, 2023
Publisher: ACL 2023
DOI: 10.18653/v1/2023.acl-long.237

Fully-Semantic Parsing and Generation: the BabelNet Meaning Representation

Author(s): Abelardo Carlos Martínez Lorenzo, Marco Maru, Roberto Navigli
Published in: Proceedings of the 60th Annual Meeting of the Association for Computational Linguistics, 2022
Publisher: Association for Computational Linguistics
DOI: 10.18653/v1/2022.acl-long.121

Link Prediction with Attention Applied on Multiple Knowledge Graph Embedding Models

Author(s): Cosimo Gregucci, Mojtaba Nayyeri, Daniel Hernández, Steffen Staab
Published in: WWW '23: Proceedings of the ACM Web Conference 2023, Issue April 2023, 2023, Page(s) Pages 2600–2610
Publisher: ACM
DOI: 10.1145/3543507.3583358

BabelNet Meaning Representation: A Fully Semantic Formalism to Overcome Language Barriers

Author(s): Navigli, Roberto;Blloshmi, Rexhina;Martinez Lorenzo, Abelardo Carlos
Published in: Proceedings of the 36th AAAI Conference on Artificial Intelligence, 2022
Publisher: Association for the Advancement of Artificial Intelligence
DOI: 10.1609/aaai.v36i11.21490

Universal Knowledge Graph Embeddings

Author(s): N’Dah Jean Kouagou, Caglar Demir, Hamada M. Zahera, Adrian Wilke, Stefan Heindorf, Jiayi Li, Axel-Cyrille Ngonga Ngomo
Published in: Association for Computing Machinery, New York, United States, 2024, Page(s) 1793-1797, ISBN 979-8-4007-0172-6
Publisher: Association for Computing Machinery, New York, United States
DOI: 10.1145/3589335.3651978

Toward a Comparison Framework for Interactive Ontology Enrichment Methodologies

Author(s): Jarno Vrolijk, Ioannis Reklos, Mahsa Vafaie, Arcangelo Massari, Maryam Mohammadi, Sebastian Rudolph
Published in: Visualization and Interaction for Ontologies and Linked Data 2022, 2022
Publisher: CEUR Workshop Proceedings

Shrinking Embeddings for Hyper-Relational Knowledge Graphs

Author(s): Bo Xiong, Mojtaba Nayyeri, Shirui Pan, Steffen Staab
Published in: Proceedings of the 61st Annual Meeting of the Association for Computational Linguistics, Issue 2023, 2023
Publisher: Association for Computational Linguistics
DOI: 10.18653/v1/2023.acl-long.743

Incorporating Graph Information in Transformer-based AMR Parsing

Author(s): Pavlo Vasylenko, Pere Lluís Huguet Cabot, Abelardo Carlos Martínez Lorenzo, Roberto Navigli
Published in: Findings of the Association for Computational Linguistics: ACL 2023, Issue 2023, 2023
Publisher: Association for Computational Linguistics
DOI: 10.18653/v1/2023.findings-acl.125

Time-aware Entity Alignment using Temporal Relational Attention

Author(s): Chengjin Xu, Fenglong Su, Bo Xiong, Jens Lehmann
Published in: Proceedings of the ACM Web Conference (WWW) 2022, Issue April 2022, 2022, Page(s) Pages 788–797
Publisher: ACM
DOI: 10.1145/3485447.3511922

Symbolic Vs Sub-symbolic AI Methods: Friends or Enemies?

Author(s): Ilkou, E., & Koutraki, M. (2020)
Published in: International Conference on Information and Knowledge Management (CIKM), Issue vol. 2699, 2020, Page(s) 3523–3524, ISSN 1613-0073
Publisher: CEUR Workshop Proceedings (CEUR-WS.org)

HybridFC: A Hybrid Fact-Checking Approach for Knowledge Graphs

Author(s): Umair Qudus, Michael Röder, Muhammad Saleem & Axel-Cyrille Ngonga Ngomo
Published in: The Semantic Web - {ISWC} 2022 - 21st International Semantic Web Conference, Virtual Event, October 23-27, 2022, Proceedings, Issue October 23-27, 2022, 2022, Page(s) 462-480
Publisher: Springer
DOI: 10.1007/978-3-031-19433-7_27

Neural Class Expression Synthesis

Author(s): N'Dah Jean Kouagou, Stefan Heindorf, Caglar Demir, Axel-Cyrille Ngonga Ngomo
Published in: The Semantic Web. ESWC 2023. Lecture Notes in Computer Science, Issue 13870, 2023, Page(s) 209–226, ISBN 978-3-031-33454-2
Publisher: Springer
DOI: 10.1007/978-3-031-33455-9_13

Neural Class Expression Synthesis in ALCHIQ(D)

Author(s): N’Dah Jean Kouagou, Stefan Heindorf, Caglar Demir, Axel-Cyrille Ngonga Ngomo
Published in: Machine Learning and Knowledge Discovery in Databases: Research Track. ECML PKDD 2023. Lecture Notes in Computer Science, Issue 14172, 2023, Page(s) 196–212, ISBN 978-3-031-43421-1
Publisher: Springer
DOI: 10.1007/978-3-031-43421-1_12

Learning Concept Lengths Accelerates Concept Learning in ALC

Author(s): N'Dah Jean Kouagou, Stefan Heindorf, Caglar Demir, Axel-Cyrille Ngonga Ngomo
Published in: The Semantic Web - 19th International Conference, {ESWC} 2022, Hersonissos, Crete, Greece, May 29 - June 2, 2022, Proceedings, 2022, Page(s) 236-252
Publisher: Springer
DOI: 10.1007/978-3-031-06981-9_14

Hyperbolic Embedding Inference for Structured Multi-Label Prediction

Author(s): Bo Xiong, Michael Cochez, Mojtaba Nayyeri, Steffen Staab
Published in: 36th Conference on Neural Information Processing Systems (NeurIPS 2022)., Issue 31 October 2022, 2022
Publisher: Openreview

GUCON: A Generic Graph Pattern based Policy Framework for Usage Control Enforcement

Author(s): Ines Akaichi, Giorgos Flouris, Irini Fundulaki and Sabrina Kirrane
Published in: International Joint Conference on Rules and Reasoning (RuleML+RR), 2023, Page(s) 34-53, ISBN 978-3-031-45072-3
Publisher: Springer
DOI: 10.1007/978-3-031-45072-3_3

REBEL: Relation Extraction By End-to-end Language generation

Author(s): Pere-Lluís Huguet Cabot, Roberto Navigli
Published in: Proc. of Findings of EMNLP, 2021, Page(s) 2370–2381
Publisher: European ACL

Us vs. Them: A Dataset of Populist Attitudes, News Bias and Emotions

Author(s): Pere-Lluís Huguet Cabot, David Abadi, Agneta Fischer, Ekaterina Shutova
Published in: Proceedings of the 16th Conference of the European Chapter of the Association for Computational Linguistics: Main Volume, Issue April 19 - 23, 2021, 2021, Page(s) 1921-1945
Publisher: Association for Computational Linguistics
DOI: 10.18653/v1/2021.eacl-main.165

TEMPORALFC: A Temporal Fact Checking approach over Knowledge Graphs

Author(s): Umair Qudus, Michael Röder, Sabrina Kirrane, Axel-Cyrille Ngonga Ngomo
Published in: The Semantic Web – ISWC 2023, Issue November 6-10, 2023, 2023, Page(s) 465–483
Publisher: Springer International Publishing
DOI: 10.1007/978-3-031-47240-4_25

Legal-Ethical Challenges and Technological Solutions to e-Health Data Consent in the EU

Author(s): Doan, X., Florea, M., & Carter, S. E.
Published in: HHAI 2023: Augmenting Human Intellect - Proceedings of the 2nd International Conference on Hybrid Human-Artificial Intelligence, 2023, Page(s) 243-253
Publisher: IOS Press EBooks
DOI: 10.3233/faia230088

Is Automated Consent in Solid GDPR-Compliant? An Approach for Obtaining Valid Consent with the Solid Protocol

Author(s): Marcu Florea and Beatriz Esteves
Published in: Information (Switzerland) Special Issue Addressing Privacy and Data Protection in New Technological Trends, 2023, ISSN 2078-2489
Publisher: Multidisciplinary Digital Publishing Institute (MDPI)
DOI: 10.3390/info14120631

Certification as guidance for data protection by design

Author(s): Efstratios Koulierakis
Published in: International Review of Law Computers and Technology, 2023, ISSN 1364-6885
Publisher: Taylor & Francis
DOI: 10.1080/13600869.2023.2269498

Withdrawal of consent for processing personal data in biomedical research

Author(s): Marcu Florea
Published in: International Data Privacy Law, Issue 13(2), 2023, Page(s) 107-123, ISSN 2044-4001
Publisher: Oxford University Press
DOI: 10.1093/idpl/ipad008

An Empirical Evaluation of Cost-based Federated SPARQL Query Processing Engines

Author(s): Umair Qudus and Muhammad Saleem and Axel-Cyrille Ngonga Ngomo and Young-Koo Lee
Published in: Semantic Web, Issue vol. 12, no. 6, 2021, Page(s) 843-868, ISSN 1570-0844
Publisher: IOS Press
DOI: 10.3233/sw-200420

The challenge of incorporating legal rules into digital applications: a theoretical exploration of article 25 GDPR

Author(s): Efstratios Koulierakis
Published in: ILLYRIUS International Scientific Review, 2022, Page(s) 35-46, ISSN 2225-2894
Publisher: e Italo-Albanian Center of Studies, High Formation and Researches CESIAL of CEMAS “Sapienza” Università di Roma

CollabGraph: A Graph-Based Collaborative Search Summary Visualization

Author(s): Eleni Ilkou; Tetiana Tolmachova; Marco Fisichella; Davide Taibi
Published in: IEEE Transactions on Learning Technologies, Issue VOL. 16, NO. 3, JUNE 2023, 2023, Page(s) 382-398, ISSN 1939-1382
Publisher: Institute of Electrical and Electronics Engineers
DOI: 10.1109/tlt.2023.3242174

Deliverables

Publications

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