8-Valent Fuzzy Logic for Iris Recognition and Biometry
  This paper shows that maintaining logical consistency of an iris recognition
system is a matter of finding a suitable partitioning of the input space in
enrollable and unenrollable pairs by negotiating the user comfort and the
safety of the biometric system. In other words, consistent enrollment is
mandatory in order to preserve system consistency. A fuzzy 3-valued
disambiguated model of iris recognition is proposed and analyzed in terms of
completeness, consistency, user comfort and biometric safety. It is also shown
here that the fuzzy 3-valued model of iris recognition is hosted by an 8-valued
Boolean algebra of modulo 8 integers that represents the computational
formalization in which a biometric system (a software agent) can achieve the
artificial understanding of iris recognition in a logically consistent manner.
