Recently we've all been thinking about flat (or better, faceted) hierarchy web apps that organize email, photos, bookmarks, and general knowledge. The common threads are metadata (tags, categories, labels) that enrich relationships within and hence searchability of large collections. But besides marketroid hype (buzzwords, snark) and a computer that plays Twenty Questions what else can we do and study using faceted data structures: searchable culture references in The Simpsons, library science, computer filesystems, A.I. development, models for human memory and cognition?
FacetedClassification.
From http://www.metafilter.com/mefi/37515.
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