A PHONOLOGICAL RULE TESTER
BOLT BERANEK AND NEWMAN INC CAMBRIDGE MA
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The paper reports on the design and implementation of a system to alleviate the problem of rule evaluation for the linguist in the area of phonology. The system permits the user to define, on-line, sets of rules statable within the framework presented in The Sound Patterns of English N. Chomsky and M. Halle, 1968, to define phonemes as bundles of specified distinctive features, to define data as strings of phonemes with associated grammatical structure, to test the effect of applying rules to the data, and to store both the definitions and results. The system was written in BBN LISP bobrow et al. 1967 on the Scientific Data System 940 computer. The rule application facility described in detail later was implemented by translating the linguistic rules to rules in FLIP Teitelman, 1967, a format directed list processor embedded in LISP. This made the system construction easy while providing very sophisticated capabilities for the linguist. The system is designed to be used on-line in interactive fashion, with control returned to the user after each command is executed.