Hacker News Reader

Fuzzy Sets can be used in a pretty wide variety of fields. Here are three books by the same author that cover a pretty big area:

I have a use case for this in a wargame with hidden units. You know the size of an opponent's stacks, and the total forces he commands, but not always which units are in which stacks. But you can observe some, and deduce some, and guess some.

I'm using fuzzy subsets of Euclidean 3-space to model sensor coverage. Computationally, I use FuzzPy's (discrete) fuzzy set class to make fuzzy sets of 3D point objects to work with.