How can we meaningfully classify large collection of knowledge works (books, web sites, whatever)?
Eekels [Eek00] defines 4 kinds of information for decision making (in design):
Classification frameworks help organise bodies of knowledge, which in turn can encourage reflection on those bodies of knowledge. This can help identify new opportunities for interesting research (Hey! Look at that big gap in our body of knowledge that we'd've never noticed without having organised all the stuff we know!)
There are three families of classification systems: