John Udell finds some interesting patterns while attempting collaborative filtering of his del.ic.ous bookmarks. He says that 6550 del.icio.us folks share common bookmarks.with him. John demonstrates that his link affinity with that population displays the now-familiar long tail!!: John sniffs that a recommendation engine is lurking in there somewhere, and he is trying to get at it and has built what he calls as a two stroke engine like prototype. First, it captures the set of del.icio.us users on the steep part of the curve - the ones with whom I have the most link affinity. Then it reads all their RSS feeds, coalesces the links, and applies another filter to select just the links above a threshold of commonality.
The two thresholds -- personal affinity and link commonality – would be the key – and as a first step John has synthesized a recommendation feed,he believes that this may be a promising way to identify an implicit community of interest and tap into its emergent group mind. Truly interesting – Del-icio.us, Collaborative filtering, Synthesized feeds and Long tail.
Category : Collaborative Filtering
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