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Tag Metadata in Feeds

2008 Aug 25, 10:13

As noted previously, my page consists of the aggregation of my various feeds and in working on that code recently it was again brought to my attention that everyone has different ways of representing tag metadata in feeds. I made up a list of how my various feed sources represent tags and list that data here so that it might help others in the future.

Tag markup from various sources
Source Feed Type Tag Markup Scheme One Tag Per Element Tag Scheme URI Human / Machine Names Example Markup
LiveJournal Atom atom:category yes no no , (source)
LiveJournal RSS 2.0 rss2:category yes no no technical
(soure)
WordPress RSS 2.0 rss2:category yes no no , (source)
Delicious RSS 1.0 dc:subject no no no photosynth photos 3d tool
(source)
Delicious RSS 2.0 rss2:category yes yes no domain="http://delicious.com/SequelGuy/">
hulu

(source)
Flickr Atom atom:category yes yes no term="seattle"
scheme="http://www.flickr.com/photos/tags/" />

(source)
Flickr RSS 2.0 media:category no yes no scheme="urn:flickr:tags">
seattle washington baseball mariners

(source)
YouTube RSS 2.0 media:category no no no label="Tags">
bunny rabbit yawn cadbury

(source)
LibraryThing RSS 2.0 No explicit tag metadata. no no no n/a, (source)
Tag markup scheme
Tag Markup Scheme Notes Example
Atom Category
atom:category
xmlns:atom="http://www.w3.org/2005/Atom"
category/@term
Required category name.
category/@scheme
Optional IRI id'ing the categorization scheme.
category/@label
Optional human readable category name.
term="catName"
scheme="tag:deletethis.net,2008:tagscheme"
label="category name in human readable format"/>
RSS 2.0 category
rss2:category
empty namespace
category/@domain
Optional string id'ing the categorization scheme.
category/text()
Required category name. The value of the element is a forward-slash-separated string that identifies a hierarchic location in the indicated taxonomy. Processors may establish conventions for the interpretation of categories.
domain="tag:deletethis.net,2008:tagscheme">
MSFT
Yahoo Media RSS Module category
media:category
xmlns:media="http://search.yahoo.com/mrss/"
category/text()
Required category name.
category/@domain
Optional string id'ing the categorization scheme.
scheme="http://dmoz.org"
label="Ace Ventura - Pet Detective">
Arts/Movies/Titles/A/Ace_Ventura_Series/Ace_Ventura_-_Pet_Detective
Dublin Core subject
dc:subject
xmlns:dc="http://purl.org/dc/elements/1.1/"
subject/text()
Required category name. Typically, the subject will be represented using keywords, key phrases, or classification codes. Recommended best practice is to use a controlled vocabulary.
humor

Update 2009-9-14: Added WordPress to the Tag Markup table and namespaces to the Tag Markup Scheme table.

PermalinkCommentsfeed media delicious technical atom youtube yahoo rss tag

Dark Knight and Mariners Baseball

2008 Aug 4, 8:39

The weekend before last I saw Dark Knight with some friends from work and then we all ate at Z'Tejas after. Like everyone has said and as the name implies Dark Knight is... dark. Dark Knight was a little over the top at times as compared to Batman Begins but I really enjoyed it. Two times during the movie I thought it had ended but I was wrong. The Joker is both frightening (Cringe inducing line "Wanna know how I got these scars?") and humorous ("Where is Harvey Dent? ... You know where Harvey is? You know who he is?", as well as the pencil magic trick). I can certainly recommend it to anyone who enjoyed Batman Begins. The previews included Burn After Reading a new Coen Brother's comedy that I look forward to, and Quantum of Solace which hopefully does the same thing Dark Knight has, keep up the new direction on the refreshed franchise.

Safeco Field Suite photoThis past weekend Sarah and I went to a Mariners baseball game. I think this is the first MLB baseball game I've seen in person. Sarah's company gave out tickets for the game and the use of a suite. Its a room half way up the stadium with comfortable chairs, a mini-fridge built-in to the marble counter-topped center table, and a big flat screen television with the game on it. I suppose that's in case you don't want to turn to the right and sit at the window, or walk out onto the balcony which features three rows of comfy chairs overlooking the field. Anyway there was free food and drinks and I met some of the people Sarah works with.

PermalinkCommentsbaseball batman nontechnical

View from the Safeco Field Suite

2008 Aug 3, 12:53

sequelguy posted a photo:

View from the Safeco Field Suite

PermalinkCommentsseattle washington baseball mariners safecofield

In the Safeco Field Suite

2008 Aug 3, 12:52

sequelguy posted a photo:

In the Safeco Field Suite

PermalinkCommentsseattle me washington baseball mariners safecofield

Safeco Field Suite

2008 Aug 3, 12:52

sequelguy posted a photo:

Safeco Field Suite

PermalinkCommentsseattle washington baseball mariners safecofield

Balloon Graffiti: Balloon Graffiti Can End Vandalism Forever

2008 Jul 11, 12:57A commentor writes: "wow, street art's really blowin' up". This is using balloons to graffiti. Realistically though you've still got to deal with cleaning up the plastic. I like the reverse graffiti better.PermalinkCommentsvia:ethan_t_hein humor art streetart graffiti

Bills Posted on Pole

2008 Jun 24, 9:52

sequelguy posted a photo:

Bills Posted on Pole

Posts concerning two Ska Fests and a Dodge Ball After Party posted on a light pole.

PermalinkCommentscanada sign bills victoria

Matt Ball on Technology: Is 91 Prime?

2008 Mar 12, 1:57How to test if an integer is divisible by 2, 5, 3, 7, or 11. I knew about testing for divisibility by 3 but not why it worked.PermalinkCommentsblog math article prime

decio: il blog: Commercial made real: Holy Trinit, Rome

2008 Jan 16, 3:55FTA: "A bunch of men launched a whopping half million balls down the stairs of Holy Trinit on Pincio Hill in Rome."PermalinkCommentsart video culture cultural-disobediance humor via:boingboing

Home : Nature Precedings

2007 Jun 18, 10:49"Nature Precedings is trying to overcome those limitations by giving researchers a place to post documents such as preprints and presentations in a way that makes them globally visible and citable."PermalinkCommentsscience research journal nature database collaboration archive community

Aqua Teen Hunger Force Colon Movie Film for Theaters

2007 Apr 15, 7:37Friday Jon, Daniil, and I saw Aqua Teen Hunger Force Colon Movie Film for Theaters. It was really great. The quality of individual Aqua Teen episodes varies wildly but this movie was very funny. It was like watching an excellent episode that happened to be 87 minutes long.

I had some difficulty generating interest for the movie as many didn't think this was 'their kind of movie'. I asked Sarah and she said no but I talked to her about it again later after she watched a clip and she said she really didn't want to see it because it looked too weird. I asked her what she saw in the clip and she said a man with weird pants was talking with french fries while a drink was getting a meatball to push him around in a cart.

Well, when you put it like that it does sound weird...PermalinkCommentsmovie personal nontechnical

Tom Ballhatchet's hamster-powered paper shredder

2007 Apr 11, 5:25Hamster powered paper shredder is half paper shredder half hamster habitat.PermalinkCommentsshredder hamster paper humor design via:incredulous tom-ballhatchet

Inflatable Human Beach Ball - Gizmodo

2007 Mar 16, 4:30A giant inflatable floating ball that you sit inside of.PermalinkCommentscool toys water humor beach-ball

The ThreeBallot Voting System

2006 Oct 2, 11:14We present a new paper-based voting method with attractive security properties. Not only can each voter verify that her vote is recorded as she intended, but she gets a “receipt” that she can take home that can be used later to verify that her vote isPermalinkCommentsvoting reference security algorithm read
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