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Tuesday, January 25, 2005
 
Social software programming challenge #2: visual tag map


The del.icio.us linklogging system lets people use labels called "tags" to describe the links they capture. The rich collective dataset of tags and the links they're associated to enables the construction of something resembling a topic map, with tags as topics and links as occurrences.

Now, del.icio.us uses the right-hand column of tag-specific pages to list tags that are related to the current tag. The details of how relatedness is computed are not entirely clear, but it is probably derived from tag co-occurence in individual bookmarks. Browsing the tag landscape by clicking around tag-specific pages is interesting, but how much more fun would it be to be able to navigate a graphical, two-dimensional map of tags, à la musicplasma or audioscrobbler browser? In that spirit, here is

Challenge number two: build a visual interface for mapping out tags in del.icio.us

Let the user specify a starting tag, get the related tags, and grow it from there as the user double-clicks other tags in the map. There isn't an API method for fetching related tags from del.icio.us yet, so this requires page scraping for now. Relatedness is not symmetric, but just assuming the links are two-way should do.

Let users visit actual tag pages by simply clicking on a tag. For bonus points, show the newest links or the top links in an info box when one clicks a particular tag.

(Challenge #1 is still open, by the way)

What do you think? []  links to this post    1:38:05 PM  


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