CRANのNewsletterが更新されていたので、一昨日の帰りの新幹線の中で読んでたら、fingerprintっていうパッケージが追加されてた。 CRAN - Package fingerprint This package contains functions to manipulate binary fingerprints of arbitrary length. A fingerprint is represented by an object of S4 class 'fingerprint' which is internally represented a vector of integers, such that each element represents the position in the fingerprint that is set to 1. The bi