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  • Ivan Zderadicka thinks this is interesting:

The fuzzy description is an N-bit number in which each bit corresponds to 1/N segment of the key space. A 1 bit means that one or more files in that part of the key space are stored at that peer. A 0 bit means that no files in that part of the key space are stored at that peer.

From

Cover of P2P Networking and Applications

Note

Bloom filter