Nuno Freire
@inesc-id.pt
INESC-ID
Scopus Publications
- DEArt: Building and evaluating a dataset for object detection and pose classification for European art
Artem Reshetnikov, Maria-Cristina Marinescu, Joaquim More Lopez, Sergio Mendoza, Nuno Freire, Monica Marrero, Eleftheria Tsoupra, Antoine Isaac
Journal of Cultural Heritage, 2025
• Model with average precision close to state-of-the-art models for other domains, extensively evaluated and compared with SotA models in Computer Vision. Second evaluation of our model compared to models for existing Cultural Heritage datasets. • Manual evaluation of the correctness and relevance of the annotations generated by our model for three datasets from the Europeana collections. • An approach and preliminary experiments to generate new/refined labels for objects and relationships between objects without manual annotation, based on language models. • Discussion of the fairness of our DEArt dataset. Annotation of cultural heritage artefacts allows finding and exploration of items relevant to user needs, supports functionality such as question answering or scene understanding, and in general facilitates the exposure of the society to our history and heritage. But most artefacts lack a description of their visual content due to the assumption that one sees the object; this often means that the annotations effort focuses on the historical and artistic context, information about the painter, or details about the execution and medium. Without a significant body of visual content annotation, machines cannot integrate all this data to allow further analysis, query and inference, and cultural institutions cannot offer advanced functionality to their users and visitors. Given how time-consuming manual annotation is, and to enable the development of new technology and applications for cultural heritage, we have provided through DEArt the most extensive art dataset for object detection and pose classification to date. The current paper extends this work in several ways: (1) we introduce an approach for generating refined object and relationship labels without the need for manual annotations, (2) we compare the performance of our models with the most relevant state-of-the-art in both computer vision and cultural heritage, (3) we evaluate the annotations generated by our object detection model from a user viewpoint, for both correctness and relevance, and (4) we briefly discuss the fairness of our dataset. - Persistent Identifier Usage by Cultural Heritage Institutions: A Study on the Europeana.eu Dataset
Nuno Freire, Hugo Manguinhas, Antoine Isaac, Valentine Charles
Lecture Notes in Computer Science Including Subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics, 2023 - Datasheets for Digital Cultural Heritage Datasets
Henk Alkemade, Steven Claeyssens, Giovanni Colavizza, Nuno Freire, Jörg Lehmann, Clemens Neudecker, Giulia Osti, Daniel van Strien
Journal of Open Humanities Data, 2023
Sparked by issues of quality and lack of proper documentation for datasets, the machine learning community has begun developing standardised processes for establishing datasheets for machine learning datasets, with the intent to provide context and information on provenance, purposes, composition, the collection process, recommended uses or societal biases reflected in training datasets. This approach fits well with practices and procedures established in GLAM institutions, such as establishing collections’ descriptions. However, digital cultural heritage datasets are marked by specific characteristics. They are often the product of multiple layers of selection; they may have been created for different purposes than establishing a statistical sample according to a specific research question; they change over time and are heterogeneous. Punctuated by a series of recommendations to create datasheets for digital cultural heritage, the paper addresses the scope and characteristics of digital cultural heritage datasets; possible metrics and measures; lessons from concepts similar to datasheets and/or established workflows in the cultural heritage sector. This paper includes a proposal for a datasheet template that has been adapted for use in cultural heritage institutions, and which proposes to incorporate information on the motivation and selection criteria, digitisation pipeline, data provenance, the use of linked open data, and version information. - ROSSIO Infrastructure: A Digital Humanities Platform to Explore the Portuguese Cultural Heritage
Gonçalo Melo da Silva, Ana Celeste Glória, Ângela Sofia Salgueiro, Bruno Almeida, Daniel Monteiro, Marco Roque de Freitas, Nuno Freire
Information Switzerland, 2022
The ROSSIO Infrastructure is developing a free and open-access platform for aggregating, organising, and connecting the digital resources in the Social Sciences, Arts and Humanities provided by Portuguese higher education and cultural institutions. This paper presents an overview of the ROSSIO Infrastructure, its main objectives, the institutions involved, and the services offered by the infrastructure’s aims through its platform—namely, a discovery portal, digital exhibitions, collections, and a virtual research environment. These services rely on a metadata-aggregation solution for bringing the digital objects’ metadata from the providing institutions into ROSSIO. The aggregated datasets are converted into linked data and undergo an enrichment process based on controlled vocabularies, which are developed and published by ROSSIO. The paper will describe this process, the applications involved, and how they interoperate. We will further reflect on how these services may enhance the dissemination of science, considering the FAIR principles. - The development of the ROSSIO thesaurus: Supporting content discovery and management in a research infrastructure
Ceur Workshop Proceedings, 2021 - Automatic Translation and Multilingual Cultural Heritage Retrieval: A Case Study with Transcriptions in Europeana
Mónica Marrero, Antoine Isaac, Nuno Freire
Lecture Notes in Computer Science Including Subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics, 2021 - Metadata Aggregation via Linked Data: Results of the Europeana Common Culture Project
Nuno Freire, Enno Meijers, Sjors de Valk, Julien A. Raemy, Antoine Isaac
Communications in Computer and Information Science, 2021
Digital cultural heritage resources are widely available on the web through the digital libraries of heritage institutions. To address the difficulties of discoverability in cultural heritage, the common practice is metadata aggregation, where centralized efforts like Europeana facilitate discoverability by collecting the resources’ metadata. We present the results of the linked data aggregation task conducted within the Europeana Common Culture project, which attempted an innovative approach to aggregation based on linked data made available by cultural heritage institutions. This task ran for one year with participation of twelve organizations, involving the three member roles of the Europeana network: data providers, intermediary aggregators, and the central aggregation hub, Europeana. We report on the challenges that were faced by data providers, the standards and specifications applied, and the resulting aggregated metadata. - Cultural heritage metadata aggregation using web technologies: IIIF, Sitemaps and Schema.org
Nuno Freire, Glen Robson, John B. Howard, Hugo Manguinhas, Antoine Isaac
International Journal on Digital Libraries, 2020
In the World Wide Web, a very large number of resources are made available through digital libraries. We (Europeana and data providers) report on case studies that tested the application of some of the most promising Web technologies, exploring several solutions based on the International Image Interoperability Framework (IIIF) and Sitemaps. We also describe an analysis of the Schema.org vocabulary for application in the context of cultural heritage and metadata aggregation. The solutions were tested successfully and leveraged on existing technology and knowledge in cultural heritage, with low implementation barriers. The future challenges lie in choosing among the several possibilities and standardizing solution(s). Europeana will proceed with recommendations for its network and is actively working within the IIIF community to achieve this goal. - Data aggregation lab: An experimental framework for data aggregation in cultural heritage
Nuno Freire
International Journal of Metadata Semantics and Ontologies, 2020
This paper describes the Data Aggregation Lab software, a system that implements the metadata aggregation workflow of cultural heritage, based on the underlying concepts and technologies of the Web of Data. These aggregation technologies can fulfil the functional requirements for metadata harvesting in cultural heritage and at the same time allow cultural heritage data to be globally interoperable with internet search engines and the Web of Data. The Data Aggregation Lab provides a framework to support several research activities within the Europeana network, such as conducting case studies, providing reference implementations, and supporting technology adoption. It provides working implementations for metadata aggregation methods with which our research has obtained positive results. These methods apply linked data, Schema.org, IIIF, Sitemaps and RDF-related technologies for innovation in data aggregation, data analysis and data conversion for cultural heritage data. The software is available for reuse and is open-sourced. - Domain-Focused Linked Data Crawling Driven by a Semantically Defined Frontier: A Cultural Heritage Case Study in Europeana
Nuno Freire, Mário J. Silva
Lecture Notes in Computer Science Including Subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics, 2020 - RDF reasoning on large ontologies: A study on cultural heritage and wikidata
Nuno Freire, Diogo Proença
IFIP Advances in Information and Communication Technology, 2020 - Availability of cultural heritage structured metadata in the world wide web
22nd International Conference on Electronic Publishing Connecting the Knowledge Commons from Projects to Sustainable Infrastructure Elpub 2018, 2020 - Semantic web in europeana: An edm standard approach
Luciana Candida Silva, José Eduardo Santarem Segundo, Nuno Freire
Biblios, 2020 - An Observational Study of Equivalence Links in Cultural Heritage Linked Data for agents
Nuno Freire, Hugo Manguinhas, Antoine Isaac
Lecture Notes in Computer Science Including Subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics, 2020 - Automated interpretability of linked data ontologies: : an evaluation within the cultural heritage domain
Nuno Freire, Sjors de Valk
Proceedings 2019 IEEE International Conference on Big Data Big Data 2019, 2019 - Aggregation of linked data in the cultural heritage domain: A case study in the Europeana network
Nuno Freire, René Voorburg, Roland Cornelissen, Sjors de Valk, Enno Meijers, Antoine Isaac
Information Switzerland, 2019 - Opening digitized newspapers corpora: Europeana’s full-text data interoperability case
Nuno Freire, A. Isaac, Twan Goosen, D. Broeder, Hugo Manguinhas, V. Charles
Openaccess Series in Informatics, 2019 - The Data Aggregation Lab Software: Experimentation for Linked Data Aggregation in Cultural Heritage
Nuno Freire
Communications in Computer and Information Science, 2019 - Technical Usability of Wikidata’s Linked Data: Evaluation of Machine Interoperability and Data Interpretability
Nuno Freire, Antoine Isaac
Lecture Notes in Business Information Processing, 2019 - Wikidata's linked data for cultural heritage digital resources: An evaluation based on the Europeana Data Model
Proceedings of the International Conference on Dublin Core and Metadata Applications, 2019 - Evaluating Data Quality in Europeana: Metrics for Multilinguality
Péter Király, Juliane Stiller, Valentine Charles, Werner Bailer, Nuno Freire
Communications in Computer and Information Science, 2019 - Aggregation of Linked Data : A case study in the cultural heritage domain
Nuno Freire, Enno Meijers, Sjors de Valk, Rene Voorburg, Antoine Isaac, Roland Cornelissen
Proceedings 2018 IEEE International Conference on Big Data Big Data 2018, 2018 - Evaluation of Schema.org for Aggregation of Cultural Heritage Metadata
Nuno Freire, Valentine Charles, Antoine Isaac
Lecture Notes in Computer Science Including Subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics, 2018 - Aggregation of cultural heritage datasets through the Web of Data
Nuno Freire, Enno Meijers, René Voorburg, Antoine Isaac
Procedia Computer Science, 2018 - A survey of Web technology for metadata aggregation in cultural heritage
Nuno Freire, Antoine Isaac, Glen Robson, John Brooks Howard, Hugo Manguinhas
Information Services and Use, 2018 - Designing a multilingual knowledge graph as a service for cultural heritage - Some challenges and solutions
Proceedings of the International Conference on Dublin Core and Metadata Applications, 2018 - Building new knowledge from distributed scientific corpus: HERBADROP & EUROPEANA: Two concrete case studies for exploring big archival data
Pascal Dugenie, Nuno Freire, Daan Broeder
Proceedings 2017 IEEE International Conference on Big Data Big Data 2017, 2017 - Web technologies: A survey of their applicability to metadata aggregation in cultural heritage
Nuno Freire, G. Robson, A. Isaac, Hugo Manguinhas, John B. Howard
Expanding Perspectives on Open Science Communities Cultures and Diversity in Concepts and Practices Proceedings of the 21st International Conference on Electronic Publishing, 2017 - Data Quality Assessment in Europeana: Metrics for Multilinguality
Ceur Workshop Proceedings, 2017 - Metadata aggregation: Assessing the application of IIIF and sitemaps within cultural heritage
Nuno Freire, Glen Robson, John B. Howard, Hugo Manguinhas, Antoine Isaac
Lecture Notes in Computer Science Including Subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics, 2017 - Exploring comparative evaluation of semantic enrichment tools for cultural heritage metadata
Hugo Manguinhas, Nuno Freire, Antoine Isaac, Juliane Stiller, Valentine Charles, Aitor Soroa, Rainer Simon, Vladimir Alexiev
Lecture Notes in Computer Science Including Subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics, 2016 - WOSP2015: 4th International Workshop on Mining Scientific Publications
Petr Knoth, Kris Jack, Lucas Anastasiou, Nuno Freire, Nancy Pontika, Drahomira Herrmannova
Proceedings of the ACM IEEE Joint Conference on Digital Libraries, 2015 - Word occurrence based extraction of work contributors from statements of responsibility
Nuno Freire
International Journal on Digital Libraries, 2014 - New opportunities, methods and tools for mining scientific publications
D Lib Magazine, 2014 - Facilitating access and reuse of research materials: The case of the European library
Freire Nuno
Mining the Digital Information Networks Proceedings of the 17th International Conference on Electronic Publishing Elpub 2013, 2013 - Use of authorities open data in the arrow rights infrastructure
Proceedings of the International Conference on Dublin Core and Metadata Applications, 2013 - Facilitating access and reuse of research materials: The case of the European Library
Nuno Freire
Information Services and Use, 2013 - Word occurrence based extraction of work contributors from statements of responsibility
Nuno Freire
Lecture Notes in Computer Science Including Subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics, 2013 - Scientific publications: Gathering data, extracting information, and following trends
Petr Knoth, Zdenek Zdrahal, Nuno Freire, Markus Muhr
D Lib Magazine, 2013 - Supporting rights clearance for digitisation projects with the ARROW service
Nuno Freire, Gabriella Scipione, Markus Muhr, Andreas Juffinger
Liber Quarterly, 2013 - Offspring from reproduction problems: What replication failure teaches us
Acl 2013 51st Annual Meeting of the Association for Computational Linguistics Proceedings of the Conference, 2013 - Portuguese controlled language: Coping with ambiguity
Palmira Marrafa, Raquel Amaro, Nuno Freire, Sara Mendes
Lecture Notes in Computer Science Including Subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics, 2012 - An analysis of the named entity recognition problem in digital library metadata
Nuno Freire, José Borbinha, Pável Calado
Proceedings of the ACM IEEE Joint Conference on Digital Libraries, 2012 - An approach for named entity recognition in poorly structured data
Nuno Freire, José Borbinha, Pável Calado
Lecture Notes in Computer Science Including Subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics, 2012 - Supporting multilingual bibliographic resource discovery with functional requirements for bibliographic records
Hugo Manguinhas, Nuno Freire, Jorge Machado, José Borbinha
Semantic Web, 2012 - Author consolidation across European national bibliographies and academic digital repositories
Cris 2012 E Infrastructures for Research and Innovation Linking Information Systems to Improve Scientific Knowledge Production 11th International Conf on Current Research Information Systems, 2012 - A language independent approach for aligning subject heading systems with geographic ontologies
Proceedings of the International Conference on Dublin Core and Metadata Applications, 2011 - A system for using national bibliographies in rights information infrastructures
Nuno Freire, Andreas Juffinger
Lecture Notes in Computer Science Including Subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics, 2011 - A language independent approach for named entity recognition in subject headings
Nuno Freire, José Borbinha, Pável Calado
Lecture Notes in Computer Science Including Subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics, 2011 - Using national bibliographies for rights clearance
Nuno Freire, Andreas Juffinger
Proceedings of the ACM IEEE Joint Conference on Digital Libraries, 2011 - A metadata geoparsing system for place name recognition and resolution in metadata records
Nuno Freire, José Borbinha, Pável Calado, Bruno Martins
Proceedings of the ACM IEEE Joint Conference on Digital Libraries, 2011 - Matching intellectual works for rights management in the European library
Nuno Freire
Lecture Notes in Computer Science Including Subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics, 2010 - FRBRization of MARC records in multiple catalogs
Hugo Miguel Álvaro Manguinhas, Nuno Miguel Antunes Freire, José Luis Brinquete Borbinha
Proceedings of the ACM International Conference on Digital Libraries, 2010 - REPOX - A framework for metadata interchange
Diogo Reis, Nuno Freire, Hugo Manguinhas, Gilberto Pedrosa
Lecture Notes in Computer Science Including Subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics, 2009 - User interface for a geo-temporal search service using DIGMAP components
Jorge Machado, Gilberto Pedrosa, Nuno Freire, Bruno Martins, Hugo Manguinhas
Lecture Notes in Computer Science Including Subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics, 2009 - Complex data transformations in digital libraries with spatio-temporal information
Bruno Martins, Nuno Freire, José Borbinha
Lecture Notes in Computer Science Including Subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics, 2008 - Consolidation of references to persons in bibliographic databases
Nuno Freire, José Borbinha, Bruno Martins
Lecture Notes in Computer Science Including Subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics, 2008 - Geographically-aware information retrieval for collections of digitized historical maps
Bruno Martins, Jose Borbinha, Gilberto Pedrosa, João Gil, Nuno Freire
International Conference on Information and Knowledge Management Proceedings, 2007 - Identification of FRBR works within bibliographic databases: An experiment with UNIMARC and duplicate detection techniques
Nuno Freire, José Borbinha, Pável Calado
Lecture Notes in Computer Science Including Subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics, 2007 - Digital libraries and digitised maps: An early overview of the DIGMAP project
José Borbinha, Gilberto Pedrosa, João Gil, Bruno Martins, Nuno Freire, Milena Dobreva, Alberto Wyttenbach
Lecture Notes in Computer Science Including Subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics, 2007 - DIGMAP - Discovering our past world with digitised maps
José Borbinha, Gilberto Pedrosa, Diogo Reis, João Luzio, Bruno Martins, João Gil, Nuno Freire
Lecture Notes in Computer Science Including Subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics, 2007 - Metadata spaces: The concept and a case with REPOX
Nuno Freire, José Borbinha
Lecture Notes in Computer Science Including Subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics, 2006 - Metadata spaces: The concept and a case with REPOX
Nuno Freire, Hugo Manguinhas, José Borbinha
Lecture Notes in Computer Science Including Subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics, 2006 - Management of metadata standards: The case of UNIMARC
Hugo Manguinhas, Nuno Freire, José Borbinha
Lecture Notes in Computer Science Including Subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics, 2006 - BND: The architecture of a National Digital Library
Proceedings of the ACM IEEE International Conference on Digital Libraries JCDL 2004, 2004 - Deposit collections of digital theses and dissertations
Zeitschrift Fur Bibliothekswesen Und Bibliographie, 2001
RECENT SCHOLAR PUBLICATIONS
- DEArt: Building and evaluating a dataset for object detection and pose classification for European art
A Reshetnikov, MC Marinescu, JM Lopez, S Mendoza, N Freire, ...
Journal of Cultural Heritage 75, 258-266 , 2025
2025
Citations: 2 - Persistent identifier usage by cultural heritage institutions: a study on the europeana. eu dataset
N Freire, H Manguinhas, A Isaac, V Charles
International Conference on Theory and Practice of Digital Libraries, 341-348 , 2023
2023
Citations: 6 - ROSSIO Infrastructure: A Digital Humanities Platform to Explore the Portuguese Cultural Heritage
GM d Silva, AC Glória, ÂS Salgueiro, B Almeida, D Monteiro, MR d Freitas, ...
Digital Humanities Research 3 (1), 95 , 2023
2023 - Report on the 2nd Linked Archives International Workshop (LinkedArchives 2022) at TPDL 2022
CT Lopes, C Ribeiro, F Niccolucci, M Poveda-Villalón, N Freire
ACM SIGIR Forum 56 (2), 1-8 , 2023
2023
Citations: 1 - Europeana and the FAIR principles for research data
A Isaac, N Freire
Abgerufen am , 2023
2023
Citations: 3 - Datasheets for digital cultural heritage datasets
H Alkemade, S Claeyssens, G Colavizza, N Freire, J Lehmann, ...
Journal of open humanities data 9 (17), 1-11 , 2023
2023
Citations: 54 - Report on the 1st linked archives international workshop (LinkedArchives 2021) at TPDL 2021
C Teixeira Lopes, C Ribeiro, F Niccolucci, I Pimenta Rodrigues, N Freire
Association for Computing Machinery , 2022
2022 - Report on the 1st linked archives international workshop (LinkedArchives 2021) at TPDL 2021
CT Lopes, C Ribeiro, F Niccolucci, I Rodrigues, N Freire
ACM SIGIR Forum 55 (2), 1-11 , 2022
2022
Citations: 3 - ROSSIO infrastructure: A digital humanities platform to explore the Portuguese cultural heritage
GM Silva, AC Glória, ÂS Salgueiro, B Almeida, D Monteiro, MR Freitas, ...
Information 13 (2), 50 , 2022
2022
Citations: 9 - Linked Archives 2022 International Workshop-Preface
CT Lopes, C Ribeiro, F Niccolucci, M Poveda-Villalón, N Freire
Proceedings http://ceur-ws. org ISSN 1613, 0073 , 2022
2022 - Automatic translation and multilingual cultural heritage retrieval: a case study with transcriptions in Europeana
M Marrero, A Isaac, N Freire
International Conference on Theory and Practice of Digital Libraries, 133-138 , 2021
2021
Citations: 5 - ROSSIO Infrastructure: a digital research tool for social sciences, arts and humanities
GM da Silva, AC Glória, Â Salgueiro, B Almeida, D Monteiro, ...
Proceedings of the ICTeSSH 2021 conference , 2021
2021
Citations: 1 - ROSSIO Infrastructure
GMCM Silva, AC Glória, Â Salgueiro, B Almeida, DV Monteiro, ...
2021 - The Development of the ROSSIO Thesaurus
B Almeida, N Freire, DV Monteiro
CEUR Workshop Proceedings , 2021
2021
Citations: 12 - Metadata aggregation via linked data: results of the Europeana Common Culture project
N Freire, E Meijers, S de Valk, JA Raemy, A Isaac
Research Conference on Metadata and Semantics Research, 383-394 , 2020
2020
Citations: 15 - Domain-Focused Linked Data Crawling Driven by a Semantically Defined Frontier: A Cultural Heritage Case Study in Europeana
N Freire, MJ Silva
International Conference on Asian Digital Libraries, 340-348 , 2020
2020
Citations: 3 - An Observational Study of Equivalence Links in Cultural Heritage Linked Data for agents
N Freire, H Manguinhas, A Isaac
International Conference on Theory and Practice of Digital Libraries, 62-70 , 2020
2020
Citations: 5 - Web Semântica na Europeana: uma abordagem do padrão EDM.
L Candida Silva, JE Santarem Segundo, N Freire
Biblios , 2020
2020 - RDF reasoning on large ontologies: a study on cultural heritage and wikidata
N Freire, D Proença
IFIP International Conference on Artificial Intelligence Applications and … , 2020
2020
Citations: 6 - Wikidata's linked data for cultural heritage digital resources: an evaluation based on the Europeana Data Model
N Freire, A Isaac
Proceedings of the International Conference on Dublin Core and Metadata … , 2020
2020
Citations: 18
MOST CITED SCHOLAR PUBLICATIONS
- Offspring from reproduction problems: What replication failure teaches us
A Fokkens, M Van Erp, M Postma, T Pedersen, P Vossen, N Freire
Proceedings of the 51st Annual Meeting of the Association for Computational … , 2013
2013
Citations: 141 - Datasheets for digital cultural heritage datasets
H Alkemade, S Claeyssens, G Colavizza, N Freire, J Lehmann, ...
Journal of open humanities data 9 (17), 1-11 , 2023
2023
Citations: 54 - Cultural heritage metadata aggregation using web technologies: IIIF, Sitemaps and Schema. org
N Freire, G Robson, JB Howard, H Manguinhas, A Isaac
International Journal on Digital Libraries 21 (1), 19-30 , 2020
2020
Citations: 52 - A metadata geoparsing system for place name recognition and resolution in metadata records
N Freire, J Borbinha, P Calado, B Martins
Proceedings of the 11th annual international ACM/IEEE joint conference on … , 2011
2011
Citations: 51 - Aggregation of linked data in the cultural heritage domain: A case study in the Europeana network
N Freire, R Voorburg, R Cornelissen, S De Valk, E Meijers, A Isaac
Information 10 (8), 252 , 2019
2019
Citations: 49 - Geographically-aware information retrieval for collections of digitized historical maps
B Martins, J Borbinha, G Pedrosa, J Gil, N Freire
Proceedings of the 4th ACM Workshop on Geographical information Retrieval, 39-42 , 2007
2007
Citations: 32 - Evaluation of Schema. org for aggregation of cultural heritage metadata
N Freire, V Charles, A Isaac
European Semantic Web Conference, 225-239 , 2018
2018
Citations: 30 - Exploring comparative evaluation of semantic enrichment tools for cultural heritage metadata
H Manguinhas, N Freire, A Isaac, J Stiller, V Charles, A Soroa, R Simon, ...
International conference on theory and practice of digital libraries, 266-278 , 2016
2016
Citations: 29 - Identification of FRBR works within bibliographic databases: An experiment with UNIMARC and duplicate detection techniques
N Freire, J Borbinha, P Calado
International conference on asian digital libraries, 267-276 , 2007
2007
Citations: 28 - An approach for named entity recognition in poorly structured data
N Freire, J Borbinha, P Calado
Extended Semantic Web Conference, 718-732 , 2012
2012
Citations: 27 - FRBRization of MARC records in multiple catalogs
HMÁ Manguinhas, NMA Freire, JLB Borbinha
Proceedings of the 10th annual joint conference on Digital libraries, 225-234 , 2010
2010
Citations: 27 - Aggregation of cultural heritage datasets through the Web of Data
N Freire, E Meijers, R Voorburg, A Isaac
Procedia Computer Science 137, 120-126 , 2018
2018
Citations: 23 - Links, languages and semantics: linked data approaches in The European Library and Europeana
V Charles, N Freire, A Isaac
IFLA, Lyon , 2014
2014
Citations: 23 - Metadata aggregation: assessing the application of IIIF and sitemaps within cultural heritage
N Freire, G Robson, JB Howard, H Manguinhas, A Isaac
International Conference on Theory and Practice of Digital Libraries, 220-232 , 2017
2017
Citations: 20 - Wikidata's linked data for cultural heritage digital resources: an evaluation based on the Europeana Data Model
N Freire, A Isaac
Proceedings of the International Conference on Dublin Core and Metadata … , 2020
2020
Citations: 18 - Designing a multilingual knowledge graph as a service for cultural heritage–some challenges and solutions
V Charles, H Manganinhas, A Isaac, N Freire, S Gordea
Proceedings of the International Conference on Dublin Core and Metadata … , 2018
2018
Citations: 16 - A survey of Web technology for metadata aggregation in cultural heritage
N Freire, A Isaac, G Robson, JB Howard, H Manguinhas
Information Services and Use 37 (4), 425-436 , 2017
2017
Citations: 16 - Web Technologies: A Survey of Their Applicability to Metadata Aggregation in Cultural Heritage.
N Freire, G Robson, A Isaac, H Manguinhas, JB Howard
ELPUB, 235-244 , 2017
2017
Citations: 16 - Metadata aggregation via linked data: results of the Europeana Common Culture project
N Freire, E Meijers, S de Valk, JA Raemy, A Isaac
Research Conference on Metadata and Semantics Research, 383-394 , 2020
2020
Citations: 15 - Aggregation of linked data: a case study in the cultural heritage domain
N Freire, E Meijers, S De Valk, R Voorburg, A Isaac, R Cornelissen
2018 IEEE International Conference on Big Data (Big Data), 522-527 , 2018
2018
Citations: 14
