Machine Tags

Machine Tags Dr. Harry Chen CMSC 491S/691S February 27, 2008

Agenda ,[object Object],[object Object],[object Object],[object Object]

Traditional tags ,[object Object]

Tagging Model ,[object Object],User Resources Tags

What else can you say about “photo-1293”? Resources Relates to a YouTube video (link?) John Smith is in this picture (homepage?) Taken on 2007/12/03 @ 10:00PM Johnny is the photographer (homepage?) Relates to a family trip (trip’s homepage?) Location Piccadilly Square (latitude/longitude?)

Describing and relating resources ,[object Object],[object Object],[object Object],[object Object],What’s an “ad-hoc” property?

Machine Tags ,[object Object],+ = http://www.flickr.com/groups/api/discuss/72157594497877875/

Triple Model ,[object Object],Subject Predicate (Property) Object (Value) Johnny Photo-1923 takenBy

Machine Tag Syntax ,[object Object],[namespace] : [predicate] = [object] Subject Predicate (Property) Object (Value) Where is the “Subject” in the syntax?

Machine Tag example Resource Predicate Object Johnny Smith Photo-1923 foo:takenBy [namespace] : [predicate] = [object] foo : takenBy = “Johnny Smith”

Describing location information Subject Predicate Object Photo-1923 geo:locality Piccadilly Square [namespace] : [predicate] = [object] geo:locality=“piccadilly square”

Relating resources ,[object Object],Subject Predicate Object Photo-1923 upcoming:event http://upcoming.yahoo.com/event/1393 upcoming:event=1393

I machine-tagged, but what use? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],What’s your experience with Machine Tags?

Interesting use of Machine Tags What camera did u use? About the airplane

Machine Tags for selling books http://adactio.com/journal/1274/ amazon:asin=1234567890 book:isbn=1234567890 http://learningtheworld.eu/2007/amazon-machine-tags/

Relating Flickr photos with a blog post http://adactio.com/journal/1274/ Collective intelligence?

Machine Tag for field-based search ,[object Object],[object Object]

Machine Tag for building taxonomy? ,[object Object]

Relating resources to RDF/OWL Geonames.ORG http://sws.geonames.org/5352844/about.rdf geonames:feature=5352844 http://www.geospatialsemanticweb.com/2007/03/28/geonames-machine-tags

Shortcomings of the Machine Tags ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Where is your kid? ,[object Object],[object Object],[object Object],[object Object],[object Object],Who is John? Power Station?

Machine Tags in Gnizr ,[object Object],[object Object],[object Object]

DB Table: “tag” id tag count

BookmarkManager BookmarkManager GeonamesTagListener ForUserListener geonames:[location] for:[username] bookmark added updated deleted notify notify

GeonamesTagListener.java Find all “machine tags” of  gn:geonames=[location] Get the latitude and longitude pair for [location] from Geonames.org. Add POINT(lng,lat) about a bookmark to the DB.

Listen for new Machine Tags Extend from BookmarkListener Add new listeners to the BookmarkManager

Summary ,[object Object],[object Object],[object Object]

Machine Tags

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