CHLOE - Cultural Heritage Linked Open data Environment

ASTRA (Ancient Spatial and Temporal Reference Aggregator) is an internal-use aggregator of gazetteers developed within the CHLOE framework. Rather than acting as a gazetteer in its own right, ASTRA works as a tool for disambiguation and redirection: each place is described by a single record that gathers its alternative toponyms as distinct titles, a reference set of coordinates (drawn preferably from Pleiades, given its closeness to the ancient world), and links to external authorities such as GeoNames and Wikidata, together with relations to other places. Built with Omeka S and managed through a relational database whose identifiers and relations are shared with BiDiAr and DHeLO, ASTRA provides a common spatial reference layer for the bibliographic records, texts, projects, and datasets of the infrastructure. By supporting the automatic recognition of toponyms in archaeological literature and their consistent alignment across sources, it fosters interoperability, discoverability, and the semantic enrichment of digital heritage resources, with the temporal dimension (periods) to be progressively integrated.

BiDiAr (Bibliography of Digital Archaeology) is an open-access bibliographic database that collects, organises, and enriches references related to digital methods and tools in archaeology. Developed using Zotero and integrated into the DHeLO infrastructure, BiDiAr indexes scientific literature with structured metadata, linking bibliographic entries to associated datasets, projects, and software. It serves as both a research tool and a knowledge base, tracing the development of digital archaeology over time. With over 10,000 records, BiDiAr provides a critical resource for scholars seeking to understand how digital practices have shaped archaeological research and heritage documentation across various contexts.

DHeLO (Digital Heritage Landscaping platfOrm) is a web-based platform designed to map and connect research outputs in digital archaeology and heritage science. Developed as part of the H2IOSC project, DHeLO aggregates metadata on datasets, interactive tools, and digital resources, offering structured access through geographical, chronological, and thematic entry points. By adopting a Linked Open Data model and leveraging tools like Omeka S, the platform fosters interoperability and discoverability of digital heritage assets. It aims to support both researchers and institutions in exploring the evolving digital landscape of cultural heritage through an open, extensible, and semantically enriched infrastructure.