Linking historical ship records to a newspaper archive

Ad

Ad

Ad

Ad

Ad

Ad

Ad

Ad

Ad

Ad

Ad

Ad

Linking historical ship records to
a newspaper archive
Andrea Bravo Balado
Victor de Boer, Guus Schreiber
VU Universit...

Context: dutchshipsandsailors.nl/
2

Dutch Ships and Sailors (DSS) datasets
3

Results published as Linked Data
4

Data visualizations
5

This study
• Increasing number of historical databases are
being digitized
• Finding matching occurrences of the same
...

Focus on methodology
• This study is not about developing new
techniques
• This study is about methodology:
– What com...

Data
• Muster rolls (Northern Dutch Maritime
Museum)
– Period: 1803-1937
– 77,043 records of 34,552 sea men
– 17,098 ...

Timeline newspapers in the archive
9

Example muster roll record (in Dutch)
10

Example newspaper article (in Dutch)
11

Approach
• Generate candidate set of links
• Apply two types of filters to the candidate set
– Domain-specific filterin...

Baseline generation
• Find all ship instances in the muster rolls
• Query newspaper archive for first 100 hits
with thi...

Evaluation
• No gold standard
• Manual assessment of all links is infeasible
• Sampling method for evaluating candidate...

Domain-specific filtering
• Heuristic 1: co-occurrence of name of ship
captain
– Common practice in historical maritime...

Text classification
• Task: decide whether a newspaper article is
about a ship
• Two techniques used
– Naive Bayes and...

Configuration
• Filter 1a: captain name
• Filter 1b: time restriction
• Filter 2: combine filters 1a + 1b
• Filter 2 +...

Results
18

Analysis
• Captain’s name turns out to be a strong
heuristic
• Time restriction much less useful
• When combined, prec...

Discussion
• Interestingly, the historian preferred very high
precision at the cost of recall
• Consequently, 16K links...

Limitations
• Evaluation
– 50 samples
– Choice of assessors
– Approximation of recall
• Data
– OCR quality of newspa...

Acknowledgements
• Jurjen Leinenga, domain expert
• CLARIN-NL
http://www.clarin.nl
• BiographyNet, Netherlands eScienc...

QUESTION TIME
23

Share SlideShare

Facebook
Twitter
LinkedIn

Embed

Size (px)

Show related SlideShares at end

WordPress Shortcode

Link

Share
Email

Semantics for visual resources: use... by Guus Schreiber 8011 views
NoTube: integrating TV and Web with... by Guus Schreiber 8075 views
Knowledge engineering and the Web by Guus Schreiber 8468 views
Semantics and the Humanities: some ... by Guus Schreiber 7028 views
Ontologies for multimedia: the Sema... by Guus Schreiber 8128 views
Web Science: the digital heritage case by Guus Schreiber 8229 views

Top clipped slide

View on SlideShare

1 of 23 Ad

1 of 23 Ad