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Epistolary data are by nature stored in geographically distributed archives and collections, as letters are exchanged between different people and places. To get a global view and analyze correspondences, data from the separate data silos in different cultural heritage (CH) organizations need to be aggregated, harmonized, and published as a global data service with APIs for Digital Humanities research and application development. This paper presents a new system LetterSampo Finland – Historical Letters on the Semantic Web (1809–1917) for publishing and studying epistolary data on a global level. The LOD service contains data about 1.2 million letters sent or received in the Grand Duchy of Finland during 1809–1917, aggregated from 16 Finnish CH organizations, harmonized by using a shared ontological data model and vocabularies. A new semantic portal has been created on top of the LOD service. This portal can be used to search, explore, and analyze letters, letter collections, and networks of correspondents in Digital Humanities research.

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LetterSampo Finland (1809–1917) Data Service and Portal: Searching, Exploring, and Analyzing Historical Letters and Their Underlying Networks

  • 会议论文

  • 发表日期：

    2026年

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  • Eero Hyvönen,
  • Petri Leskinen,
  • Henna Poikkimäki,
  • Heikki Rantala,
  • Jouni Tuominen,
  • Senka Drobac,
  • Ossi Koho,
  • Ilona Pikkanen,
  • Hanna-Leena Paloposki

摘要

Epistolary data are by nature stored in geographically distributed archives and collections, as letters are exchanged between different people and places. To get a global view and analyze correspondences, data from the separate data silos in different cultural heritage (CH) organizations need to be aggregated, harmonized, and published as a global data service with APIs for Digital Humanities research and application development. This paper presents a new system LetterSampo Finland – Historical Letters on the Semantic Web (1809–1917) for publishing and studying epistolary data on a global level. The LOD service contains data about 1.2 million letters sent or received in the Grand Duchy of Finland during 1809–1917, aggregated from 16 Finnish CH organizations, harmonized by using a shared ontological data model and vocabularies. A new semantic portal has been created on top of the LOD service. This portal can be used to search, explore, and analyze letters, letter collections, and networks of correspondents in Digital Humanities research.