Using Semantics to

Enhance Content

Jamie Taylor, Ph.D.

What do y’all mean

Semantics?

????

astonishmentamazement

dazestupor

appalloffend

impact

fight

combat

nauseaterevolt

blow

bump

impact

jolt

SHOCK

PageRanktm

Alec Baldwin1977

female Penélope Cruz

Rick Rubin

Colombia

Beautiful Liar

percussion

Alec Baldwin1977

female Penélope Cruz

Rick Rubin

Colombia

Beautiful Liar

percussion

birthday

born-in

gender

performed

friends-with

producer

performed-with

instrument

Shakira

Alec Baldwin1977

female Penélope Cruz

Rick Rubin

Colombia

Beautiful Liar

percussion

birthday

born-in

gender

performed

friends-with

producer

performed-with

instrument

10,704,421 Topics

Labeled Links

Strong Identifiers

(vocabulary)

Standard Format

Shakira

Alec Baldwin1977

female Penélope Cruz

Rick Rubin

Colombia

Beautiful Liar

percussion

birthday

born-in

gender

performed

friends-with

producer

performed-with

instrument

@tags#tags

short URLs

The Twitter Vocabulary

Labeled Links

Strong Identifiers

(vocabulary)

Standard Format

!

http://www.myspace.com/shakira

http://www.facebook.com/shakira

http://twitter.com/shakira

http://www.daylife.com/topic/Shakira

http://www.bestbuy.com/site/She+Wolf…

http://www.guardian.co.uk/music/shakira

http://www.last.fm/music/Shakira

http://www.netflix.com/RoleDisplay/Shakira/20046629

Labeled Links

Strong Identifiers

(vocabulary)

Standard Format

!

!

Microformats

•(Relatively) easy to use

•Small, fixed vocabulary

•No standard parsing pattern

•No strong identifiers

•Limits utility

RDFa

•Unambiguous identifiers

•Extensible vocabulary

•Standard parsing patterns

•Produces RDF

RDFSubject Predicate Object

Triple

Shakira Knows Penélope Cruz

Penélope Cruz Starred In Vanilla Sky

Shakira Born “1977”

RDFa

•Unambiguous identifiers

•Extensible vocabulary

•Standard parsing patterns

•Produces RDF

•Harder (than you would like) to use

•Rules about formatting based on RDF

…and the winner is…

HTML5 Microdata

•Easy to use

•Strong identifiers

•Extensible vocabulary

•Easy to parse

•In last call for comments stage!

•Usable! Now!

HTML5 Microdata

Tools and Widgets

Ontologies<http://rdf.freebase.com/ns/guid.9202a8c04000641f8000000005b7ab1a>

<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>

<http://rdf.freebase.com/ns/business.employment_tenure>.

<http://rdf.freebase.com/ns/guid.9202a8c04000641f8000000005b7ab1a>

<http://rdf.freebase.com/ns/business.employment_tenure.company>

<http://rdf.freebase.com/ns/en.determine_software>.

<http://rdf.freebase.com/ns/guid.9202a8c04000641f8000000007e53e16>

<http://rdf.freebase.com/ns/education.education.institution>

<http://rdf.freebase.com/ns/en.mounds_view_high_school>.<http://rdf.freebas

e.com/ns/guid.9202a8c04000641f8000000007e53e16>

<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>

<http://rdf.freebase.com/ns/education.education>.

Ontologies<http://rdf.freebase.com/ns/guid.9202a8c04000641f8000000005b7ab1a>

<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>

<http://rdf.freebase.com/ns/business.employment_tenure>.

<http://rdf.freebase.com/ns/guid.9202a8c04000641f8000000005b7ab1a>

<http://rdf.freebase.com/ns/business.employment_tenure.company>

<http://rdf.freebase.com/ns/en.determine_software>.

<http://rdf.freebase.com/ns/guid.9202a8c04000641f8000000007e53e16>

<http://rdf.freebase.com/ns/education.education.institution>

<http://rdf.freebase.com/ns/en.mounds_view_high_school>.<http://rdf.freebas

e.com/ns/guid.9202a8c04000641f8000000007e53e16>

<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>

<http://rdf.freebase.com/ns/education.education>.

Labeled Links

Strong Identifiers

(vocabulary)

Standard Format

!

!

!

Microformats RDFa Microdata