Knowledge Organization Systems (KOS) in the Semantic Web: A Multi-Dimensional Review

Since the Simple Knowledge Organization System (SKOS) specification and its SKOS eXtension for Labels (SKOS-XL) became formal W3C recommendations in 2009 a significant number of conventional knowledge organization systems (KOS) (including thesauri, classification schemes, name authorities, and lists of codes and terms, produced before the arrival of the ontology-wave) have made their journeys to join the Semantic Web mainstream. This paper uses "LOD KOS" as an umbrella term to refer to all of the value vocabularies and lightweight ontologies within the Semantic Web framework. The paper provides an overview of what the LOD KOS movement has brought to various communities and users. These are not limited to the colonies of the value vocabulary constructors and providers, nor the catalogers and indexers who have a long history of applying the vocabularies to their products. The LOD dataset producers and LOD service providers, the information architects and interface designers, and researchers in sciences and humanities, are also direct beneficiaries of LOD KOS. The paper examines a set of the collected cases (experimental or in real applications) and aims to find the usages of LOD KOS in order to share the practices and ideas among communities and users. Through the viewpoints of a number of different user groups, the functions of LOD KOS are examined from multiple dimensions. This paper focuses on the LOD dataset producers, vocabulary producers, and researchers (as end-users of KOS).Comment: 31 pages, 12 figures, accepted paper in International Journal on Digital Librarie

Europeana Creative. EDM Endpoint. Custom Views

The paper discusses the Europeana Creative project which aims to facilitate re-use of cultural heritage metadata and content by the creative industries. The paper focuses on the contribution of Ontotext to the project activities. The Europeana Data Model (EDM) is further discussed as a new proposal for structuring the data that Europeana will ingest, manage and publish. The advantages of using EDM instead of the current ESE metadata set are highlighted. Finally, Ontotext’s EDM Endpoint is presented, based on OWLIM semantic repository and SPARQL query language. A user-friendly RDF view is presented in order to illustrate the possibilities of Forest - an extensible modular user interface framework for creating linked data and semantic web applications

Thesaurus-based search in large heterogeneous collections

In cultural heritage, large virtual collections are coming into existence. Such collections contain heterogeneous sets of metadata and vocabulary concepts, originating from multiple sources. In the context of the E-Culture demonstrator we have shown earlier that such virtual collections can be effectively explored with keyword search and semantic clustering. In this paper we describe the design rationale of ClioPatria, an open-source system which provides APIs for scalable semantic graph search. The use of ClioPatria’s search strategies is illustrated with a realistic use case: searching for ”Picasso”. We discuss details of scalable graph search, the required OWL reasoning functionalities and show why SPARQL queries are insufficient for solving the search problem

MT techniques in a retrieval system of semantically enriched patents

This paper focuses on how automatic translation techniques integrated in a patent retrieval system increase its capabilities and make possible extended features and functionalities. We describe 1) a novel methodology for natural language to SPARQL translation based on a grammar– ontology interoperability automation and a query grammar for the patents domain; 2) a devised strategy for statisticalbased translation of patents that allows to transfer semantic annotations to the target language; 3) a built-in knowledge representation infrastructure that uses multilingual semantic annotations; and 4) an online application that offers a multilingual search interface over structural knowledge databases (domain ontologies) and multilingual documents (biomedical patents) that have been automatically translated.Peer ReviewedPostprint (published version

Semantic Systems. The Power of AI and Knowledge Graphs

This open access book constitutes the refereed proceedings of the 15th International Conference on Semantic Systems, SEMANTiCS 2019, held in Karlsruhe, Germany, in September 2019. The 20 full papers and 8 short papers presented in this volume were carefully reviewed and selected from 88 submissions. They cover topics such as: web semantics and linked (open) data; machine learning and deep learning techniques; semantic information management and knowledge integration; terminology, thesaurus and ontology management; data mining and knowledge discovery; semantics in blockchain and distributed ledger technologies

Datos enlazados para vocabularios abiertos: marco global de HIVE

This paper summarizes new trends and advances in Knowledge Organization from the perspective of linked open data (LOD). Although this is particularly important to galleries, libraries, archives and museums, the so-called GLAM community, it is of more general relevance, and part of the value of LOD lies in its adoption beyond that community. LOD includes descriptive metadata and vocabulary encoding schemes that are being “skosified” (encoded in the SKOS format) or rendered in OWL (the web ontology language) and made available not only “on” the web, but “for” the semantic web. The paper highlights a few exemplary initiatives in the field. The paper also introduces the HIVE (Helping Interdisciplinary Vocabularies Engineering) framework and discusses the HIVE-ES (España) extension for Spanish language vocabularies, leading to a more global approach for linked open vocabularies (LOV).Se presentan brevemente las nuevas tendencias y avances en la organización del conocimiento desde la perspectiva de linked open data (LOD). Aunque esto es particularmente importante para galerías, bibliotecas, archivos y museos –la llamada comunidad GLAM-, es de importancia más general, y parte del valor de LOD se encuentra en su adopción más allá de esa comunidad. LOD incluye esquemas de metadatos descriptivos y de codificación de vocabularios que están siendo “skosificados” (codificados en el formato SKOS) o transformados en OWL (el lenguaje de ontologías web) y puestos a disposición no sólo “en” la Web, sino también “para” la web semántica. Se destacan algunas iniciativas ejemplares en este campo y se presenta el marco HIVE (Ayuda a la Ingeniería de Vocabularios Interdisciplinares) y se analiza la extensión HIVE-ES (España) para los vocabularios en español, dando lugar a un enfoque más global a los vocabularios abiertos enlazados (LOV).The authors would like to acknowledge the thoughtful review and feedback from colleagues Dan Brickley and Charles McCathieNevile to this paper, and members of the HIVE and HIVE-ES team for their contributions to the project. The foundation of HIVE technology is supported by IMLS grant LG-07-08-0120-08

Building Lightweight Ontologies for Faceted Search with Named Entity Recognition: Case WarMemoirSampo

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