What to do with Linked Data? Eetu Mäkelä [email protected] - http://seco.cs.aalto.fi/u/jiemakel/

This presentation: http://j.mp/whatld2017

Topics ●

End user perspective: ●

What is Linked Data good for?

Topics ●

End user perspective: ●

●

What is Linked Data good for?

Publisher perspective: ● ●

Which datasets should you publish as Linked Data? What needs to be done to the data to support its use?

What is Linked Data good for? Department of Computer Science

CultureSampo ● http://www.kulttuurisampo.fi/?lang=en ● Published in 2008 ● Integrates material from some 20 different sources of some 20 different types ● sculptures, photographs, videos, poems, music, skills, buildings, old newspaper articles, events, paintings, museum items, art exhibitions, museums, books, … ● Finnish National Gallery, Finnish Literature Society, Espoo City Museum, Karhumäki Corporation, Finnish Historical Society, Finnish Broadcasting Corporation, Finnish Public Libraries, ...

Browsing (Contextualization) Department of Computer Science

From a mention in the text of the Finnish national epic Kalevala

to paintings depicting the scene of the poem or the characters in it

to information about the characters from the Finnish Literature Society

recommendations of other paintings by the same painter nearby in time

or on the same topics

From the painting onward to general authority information about the painter

unified from multiple sources

Finally to the textual biography of the painter

Everything related to Porvoo

articles

biographies aerial photographs

items used or made in Porvoo

museums in Porvoo

music related to Porvoo

events in Porvoo

Browsing the contextual network of books in http://kirjasampo.fi/ Links to author info etc. Automatic recommendations with explanations

Events, places, casualties, photographs, people and units in WarSampo

A Contextual Reader for WWI Primary Sources

A Contextual Reader for WWI Primary Sources

Relationship Discovery (Contextualization) Department of Computer Science

Search (Contextualization) Department of Computer Science

What is the position of Lemminkäinen in Finnish culture? (A search for everything related to Lemminkäinen with explanations)

(Interactive) Analysis Department of Computer Science

The distribution of churches in Southern Finland

Changes in beard fashion in the late 19th century

The flight of artists from Europe to the United States

Changes in imports from Japan to Finland in the middle 20th century

Combining data from three sources for a unified view of a person’s life

(http://www.ldf.fi/dataset/history/map.html)

Other questions ● What are the most popular colors of underwear in Finnish museum collections? ● What are the most popular themes in Finnish fiction literature? ● On the other hand, what should one write about if one wants to win Finnish literary prizes or government grants?

Length of Finnish and Translated Detective Stories

What makes for good Linked Data? Department of Computer Science

What makes for good Linked Data? ● Data that is part of a wider context ● The hardest part is manifesting the network of relationships ○ Use existing vocabularies for attribute values! ■ People: VIAF, ULAN, ... ■ Places: GeoNames, TGN, Pleiades, ... ■ Concepts & General: DBPedia, AAT, LCSH, Iconclass, … ■ Events: ? ○ Everybody seems to obsess over schemas, but they are actually not that important (but do help) ■ CIDOC-CRM, EDM, BIBFRAME, ORG, RELATIONSHIP, FOAF, schema.org, SKOS, Geo, ...

Linked Cultural Heritage ● Great aggregators pushing for CC0 licenses, publishing participating data: Europeana, Digital Public Library of America & The European Library ● Influential national libraries moving to co-operative open linked data ○ Library of Congress, Deutsche Nationalbibliothek, British Library, Bibliothèque nationale de France ● Museums, Galleries and Archives catching up: British Museum, …

Department of Computer Science

Data woes: viaf.org Automatic conversions from “Lastname, Firstname” to “Firstname Lastname” do not always work due to bad data Charles-Victor Prévost d'Arlincourt Charles Victor Prévôt ˜d'œ Arlincourt Charles Victor Prevot d' Arlincourt Arlincourt

Department of Computer Science

Data woes: Europeana http://labs.europeana.eu/api/linked-open-data-data-downloads

Department of Computer Science

Linked Data for Research (in the Humanities)

Department of Computer Science

Palladio

Idiographic

Department of Computer Science

Department of Computer Science

Department of Computer Science

Use by gender

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Use by societal rank: clergy vs gentry

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Use by societal rank: professionals vs others

Department of Computer Science

Department of Computer Science

Semantic Finlex ● Laws most often referred to from other laws and court decisions ● Laws with the most changes ● Years where most laws have changed ● Transpositions of EU legislation by year ● Supereme court alumni with most decisions and their terms of office ● Most common topics in supreme court cases based on keywords ● Most common words in legislation based on automatic keywording Department of Computer Science

This presentation: j.mp/whatld2017 Department of Computer Science