La Rioja Turismo: The Construction and Exploitation of a Queryable Tourism Knowledge Graph

Abstract

The institutional website for La Rioja tourism (https://lariojaturismo.com) is a working example of the construction and exploitation of a tourism Knowledge Graph where all digital contents referring to attractions, accommodation, tourism routes, activities, events, restaurants, wineries, etc., are semantically represented in RDF/OWL. The construction of the Knowledge Graph was carried out through the conceptualization of a Digital Semantic Model that hybridized and extended several existing ontologies and vocabularies (mainly Harmonise, OnTour, Geonames, Rout, FRBR and rNews). The overarching objective was to generate a digital space where information retrieval was simpler, more useful and more practical, offering a much more friendly and satisfactory website experience. At present, the Knowledge Graph is made up of more than 7,000 digital contents; 67,284 entities; 472,361 relations; and 675,368 triples. The digital space receives more than 40.000 visits per month. The most important Knowledge Graph exploitations are associated with the existence of a metasearch engine, faceted search engines for each knowledge object, contextual information systems, and Graph visualization systems through combination of map and semantic geo-positioning.