Appendix A

Developing the Rules Component*

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A1 Understanding two-level rules

A2 Implementing two-level rules as finite state machines

A3 Compiling two-level rules into state tables

A4 Writing the rules file

This chapter describes in detail the rules component of PC-KIMMO. Section A1 describes the formalism and meaning of two-level rules. Section A2 explains the relationship between two-level phonological rules and finite state transducers. Section A3 describes how to translate (or compile) two-level rules into the finite state transition tables that are used by PC-KIMMO. Section A4 provides specific information on the format of the rules file.