  This paper presents an implemented multi-tape two-level model capable of
describing Semitic non-linear morphology. The computational framework behind
the current work is motivated by Kay (1987); the formalism presented here is an
extension to the formalism reported by Pulman and Hepple (1993). The objectives
of the current work are: to stay as close as possible, in spirit, to standard
two-level morphology, to stay close to the linguistic description of Semitic
stems, and to present a model which can be used with ease by the Semitist. The
paper illustrates that if finite-state transducers (FSTs) in a standard
two-level morphology model are replaced with multi-tape auxiliary versions
(AFSTs), one can account for Semitic root-and-pattern morphology using high
level notation.
