OPEN GRAPH PROTOCOL

CLASS NOTES DECEMBER 1ST 2015

REVIEW

• Question: “Why is the web a giant book?”

• Text documents

• Basic unit is pages

• Question: “Why is the semantic web a giant database?

IF THE WORLD WIDE WEB IS A GIANT BOOK, THE SEMANTIC WEB

IS A GIANT DATABASE.

WHY DOES HE SAY THE WEB IS A GIANT BOOK?

IT’S BUILT OUT OF TEXT DOCUMENTS

THE BASIC UNIT IS A PAGE

WHY DOES HE SAY THE SEMANTIC WEB IS A GIANT DATABASE?

METADATA RECORDS

ITEMS SMALLER THAN THE PAGE LEVEL.

Think about <div itemscope>

NEXT EXAMPLE: FACEBOOK’S OPEN GRAPH PROTOCOL

BUT FIRST: SOME TECHNICAL TERMS

RDF TRIPLE

SUBJECT PREDICATE

OBJECT

IT’S A KIND OF GRAMMAR. IT EXPRESSES A

RELATIONSHIP.

NICHOLAS IS THE INSTRUCTOR FOR

DTC356

<SUBJECT>NICHOLAS <PREDICATE> INSTRUCTOR

<OBJECT> DTC356

OPEN GRAPH PROTOCOL

ogp.org