3 Theme 2: Data or people? Digital approaches to hobby archaeology Eljas Oksanen (University of Helsinki/University of Reading), Heikki Rantala (Aalto University), Frida Ehrnsten (University of Helsinki/The National Museum of Finland) & Eero Hyvönen (Aalto University/University of Helsinki), CoinSampo Linked Open Data Service and Semantic Portal This paper presents the new web demonstrator and Linked Open Data service CoinSampo (https://rahasampo.ldf.fi/en/) for opening numismatic public finds. The data service demonstrator has been developed from over 18,000 coin finds (mostly metal-detected) that were reported to the National Museum of Finland between 2013 and 2023, and which are enriched using external data sources by data linking. Notably, the CoinSampo web application combines faceted semantic search with various integrated and easy-to-use data-analytic visualization options, opening up the possibilities for anyone to examine larger patterns and structures in the finds data without specialist knowledge of GIS or statistical programming. The Open Source CoinSampo framework can be, moreover, relatively easily adopted to open any numismatic dataset, including those that follow the Nomisma.org ontology and data model. The application and code is therefore aimed at a maximally broad range of user audiences, including scientific researchers, heritage professionals and institutions, citizen scientists, amateur archaeologists, educators, and anyone interested in learning or opening information about the past. Khaoula Stiti (École Polytechnique de Bruxelles/ Edifices & Mémoires Tunisia) Mapping Archaeological Terrain through Heritage Crowdsourcing: A Case Study of the “Observatoire Collaboratif du Patrimoine” Project in Tunisia This paper presents a case study of the "Observatoire Collaboratif du Patrimoine" project (Collaborative Heritage Observatory), implemented by the Tunisian NGO Edifices et Mémoires, as a model of heritage crowdsourcing in Tunisia. The project focuses on documenting various historical built environments, encompassing archaeological sites among others, by mobilising volunteers for active participation in heritage documentation. Through collective efforts, it endeavours to construct a comprehensive database of archaeological sites and artefacts, concurrently fostering public engagement and heritage awareness. Utilising a digital platform available online and crowdsourcing, the project facilitates knowledge dissemination, thereby enabling significant contributions to heritage, including archaeological research. This paper underscores the project's role in advancing crowdsourced heritage and archaeology, promoting heritage conservation, and enhancing our comprehension of the past. Ben Rajeb, S., & Béjar, H. (2019). Participatory Approach for a “Collaborative Heritage Observatory” in Tunisia. In Proceedings of the Ninth International Conference on Advanced Collaborative Networks, Systems and Applications, IARIA, 12-19. Retrieved from http://personales.upv.es/thinkmind/dl/conferences/colla/colla_2019/colla_2019_1_30_50025.pdf Édifices & Mémoires. (2024). Home. Retrieved from https://www.edifices-et-memoires.com/ Édifices & Mémoires. (2017, September 26). Observatoire Collaboratif du Patrimoine / Édifices & Mémoires / UNESCO / PAE3C [Video]. YouTube. https://www.youtube.com/watch?v=QtP8qZuF2H4 Irmelin Axelsen (University of Oslo), Storing ‘grey knowledge’ for long-term FAIR data With hobby archaeology comes new forms of data that are challenging to store and share via existing recording systems and archives. This includes a variety of ‘grey knowledge’, which is often difficult to structure or even writing down at all. Consequently, a lot of this information will disappear when key
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