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Does tagging work?

It seems you can't go anywhere in Net circles these days without hearing about tagging or folksonomy or seeing something tagged with keywords. Now, Stephen Green, a leading search expert at Sun Labs, has come along to ponder the usefulness of tags.

Here's an interesting fact upon which I'll base the rest of my argument: people are horribly inconsistent when assigning keywords to documents. If you give two people the same document and ask them to assign a set of keywords to describe it, then the sets of keywords that they assign will agree only about 20% of the time. This was one of the problems that lead to the development of full text indexing systems. If we couldn't choose a few keywords from a document, we would use every word in the document as a keyword!
But Green is not ready to cast off tags completely. He says tags work better when they're drawn from a fixed vocabulary. And there may be a way to create something like that on the Web. An interesting read to take into the weekend.


Comments

Hi, Michael. It's "Green", not "Greene", right? See http://blogs.sun.com/roller/page/searchguy/About

Greg Linden on May 13, 2005 7:06 PM
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Hmmm. Not sure how that happened. Thanks for the catch, Greg. Fixed.

Michael Bazeley on May 14, 2005 12:31 AM
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My favorate article about this is: Metacrap -- Putting the torch to seven straw-men of the meta-utopia

http://www.well.com/~doctorow/metacrap.htm

Derek on May 16, 2005 10:13 AM
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