Pelagios 3Towards a Graph of Ancient World Data &an Ecosystem of Gazetteers

Elton Barker @eltontebThe Open University

Rainer Simon @aboutgeoAustrian Institute of Technology

Leif Isaksen @leifussUniversity of Southampton

July 8, 2014, Lausanne, Switzerland

…or any other online resource that bears a relation to a particular ancient place!

InscriptionsTexts

ArchaeologicalFinds

MuseumObjects

ArchaeologicalSites

Pelagios | Linking Data, Openly

39 partners from 6 countriesca. 830.000+ annotations

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A Brief History of Pelagios | Pelagios 1 & 2

How? | Don’t Unify the Model – Annotate!

Pleiades:

579885

Pleiades:

570685

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Ancient WorldResources

PleiadesGazetteer

Pelagios

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A Brief History of Pelagios | Pelagios 3

2 year project (Sep 2013 – Aug 2015) Funded by Andrew W. Mellon Foundation Annotation of geographic documents

predating 1492 (maps and texts)

Traditions Latin Greek & Byzantine Portolan charts & portolanos Christian Tradition Islamic Tradition Chinese Tradition

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by Romana Klee CC BY-SA 2.0

Growing the Graph | #1 Annotation

Associating Documents with Places.

810.12.2009

Growing the Graph | Recogito Annotation Tool

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Growing the Graph | #2 Linking Gazetteers

pleiades:423025

dare:1438

trismegistos:2058

wikidata:Q3094657

dai:2090320

Associating Places with Places (in different gazetteers).

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China Historical GIS …

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Connecting Gazetteers

Pelagios is a gazetteer user

Pelagios is not a maintainer or aggregator of gazetteers

PS: Should we unify rather than align? We don‘t think so!

Good reasons for diversity! Coverage, granularity, focus, scholarly quality, community, …

Pelagios 3 defined an RDF profile (or »specification«) for

1. publishing links between places in different gazetteers online

2. publishing minimal place metadata online

So that we search at all! So that we can make connections and cross-search.

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PLACES

INDEX

ITEMS

DB

PELAGIOS API

INGEST & ADMINISTRATION

»indexed units«are place groups

Unified fulltext searchacross both indices

Fuzzy search support Spatial indexing Facet support

Items(referencing places)

Datasets(containing items)

Annotations(building the links)

Various aggregation and lookup tables(to speed things up)RDF

»Pelagios Annotations«

RDF

Gazetteer Metadata

JSON(P) + CORS HTML

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API

Keyword search Items in dataset, sub-items in item Places per dataset, per item Temporal profile of dataset Subsets in dataset closeMatch-network for place Datasets per place (with or without closeMatches)

WORK IN PROGRESS!

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Q & A

http://pelagios-project.blogspot.co.uk@Pelagiosproject