maphub - annotations and semantic tags on historical maps

Maphub - Annotations and Semantic Tags on Historical Maps

Bernhard Haslhofer, University of Vienna

Stanford University, April 2013, Palo Alto

Stanford University, April 2013

Overview

• Historical Maps & Annotations

• Demo

• Maphub Open Annotation API

• Semantic Tagging Study


Context

• Open Annotation Collaboration Demonstrator Project

• Uses Library of Congress maps + metadata

• Based on previous work

• LEMO Media Annotation Framework

• yuma.min.js (now https://github.com/annotorious)

https://github.com/annotorious





Historical Maps & Annotations


Benefits

• Engage people; let them tell their stories

• Collect knowledge & enhance metadata

• Connect digitized maps with other Web resources


Maphub Demohttp://vimeo.com/46114369

http://vimeo.com/46114369

http://vimeo.com/46114369


Maphub Open Annotation API


Maphub Open Annotation API

• Two types of Annotations

• Georeference Annotation

• Commentarial Annotation


Georeference Annotations


Georeference Annotations

http://sws.geonames.org/

2643743/

http://maphubdev.mminf.univie.ac.at/

control_points/1

oax:Tagging

rdf:type

oax:hasSemanticTagoa:hasTarget

uuid:1235oa:annotator

http://maphubdev.mminf.univie.ac.at

oa:generator

"behas"

foaf:name

"[email protected]"

foaf:mbox

oa:Annotation

rdf:type"2012-07-18T02:

01:07Z"

oa:generated

"2012-07-18T02:01:07Z"

oa:annotated

maphub:GeoReference

rdf:type

uuid:4567

http://samos.mminf.univie.ac.

at/maps/raw/g3200.ct000725C.jp2

oa:SpecificResource

rdf:type

oa:hasSourceuuid:8910

oa:hasSelector

oa:FragmentSelector

rdf:type

xywh=6550,6228,1,1

rdf:value

dcterms:StillImage

rdf:type

image/jp2

dc:format


Commentarial Annotation


Commentarial Annotation


annotations/1

oa:Annotation

rdf:type

oa:hasTarget

uuid:1235oa:annotator

http://maphubdev.mminf.univie.ac.at

oa:generator

"behas"

foaf:name

"[email protected]"

foaf:mbox"2012-07-18T02:

01:07Z"

oa:generated

"2012-07-18T02:01:07Z"

oa:annotated

uuid:4567

http://samos.mminf.univie.ac.

at/maps/raw/g3200.ct000725C.jp2

oa:SpecificResource

rdf:type

oa:hasSource uuid:2752

oa:hasSelector

ct:ContentAsTextrdf:type

image/svg

dcterms:format

dcterms:StillImage

rdf:type

image/jp2

dc:format

oa:hasBody

uuid:2751

cnt:ContentAsText

rdf:type

"text/plain"

dc:format

In antiquity, the Strait of Gibraltar (which connects the Atlantic Ocean with the Mediterranean Sea) was also known by the name \"The Pillars of Hercules\". This is the reason for this inscription!

cnt:chars

dbpedia: Strait_of_Gibraltar

oax:hasSemanticTag

dbpedia: Pillars_of_Hercules

oax:hasSemanticTag

<svg…..>ct:chars

uuid:2753

oa:hasSelector

ct:ContentAsText

rdf:type

application/wkt

dcterms:format

POLYGON((5315 5639,5444….)

ct:chars


Controlpoint Index


control_points

ore:Aggregation

rdf:type


control_points/1


control_points/....

ore:aggregates

ore:aggregates

Maphub Controlpointsdc:title


Annotation Index


annotations

ore:Aggregation

rdf:type


annotations/1


annotations/5

ore:aggregates

ore:aggregates

Maphub Commentarial Annotationsdc:title


Semantic Tagging Study


Semantic Tagging Model

utr

Label-based tagging[Marlow et al. 2006]

K

u

rx

t

ryabout

Semantic tagging

K

urx

t1

ryrz

+

t2

-

Semantic tagging with user feedback

[Haslhofer et al. 2013]


Semantic Tagging in Maphub


Goals

• Study the effects of semantic tagging on

• tag production (# tags)

• types and categories of types added

• user task load


Methodology

• in-lab, within-subject design with 4 tag creation methods as varying condition

• Label-based tagging (LT)

• Suggestive tagging (ST)

• Semantic tagging (SMT)

• Semantic tagging with context display (SMT-CTX)

• 24 student participants

• pre- and post-test surveys incl. NASA-TLX


Results Summary

• Semantic tagging (as implemented in Maphub) does NOT affect

• tag production

• types and categories of tags

• user task load

...but provides tagging relationships to well-defined concept definitions.


Further Information

B. Haslhofer, W. Robitza, C. Lagoze, F. Guimbretiere: "Semantic Tagging on Historical Maps". ACM Web Science 2013, Paris, France, May 2-4th, 2013.http://arxiv.org/abs/1304.1636

B. Haslhofer, K. Newman, A. Stefanik, W. Robitza, C.Lagoze: "Old Maps and Open Data Networks" (Poster). iConference 2013, Fort Worth, Texas, USA, Feb 12-15th, 2013.https://ideals.illinois.edu/bitstream/handle/2142/42105/400.pdf?sequence=2

B. Haslhofer, R. Sanderson, R. Simon, H. van de Sompel: "Open Annotations on Multimedia Web Resources". Multimedia Tools and Applications, pg. 1-21, May 2012http://arxiv.org/abs/1202.6354

http://arxiv.org/abs/1304.1636


https://ideals.illinois.edu/bitstream/handle/2142/42105/400.pdf?sequence=2

https://ideals.illinois.edu/bitstream/handle/2142/42105/400.pdf?sequence=2



maphub - annotations and semantic tags on historical maps

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