<?xml version="1.0" standalone="yes"?>
<Paper uid="J94-3010">
  <Title>Steven Bird and Ewan Klein Phonological Analysis in Typed Feature Systems</Title>
  <Section position="8" start_page="487" end_page="487" type="concl">
    <SectionTitle>
7. Conclusion
</SectionTitle>
    <Paragraph position="0"> In this paper, we have tried to give the reader an impression of how two rather different phonological phenomena can be given a declarative encoding in a constraint-based grammar. Although we have focused on phonology, we have also placed our analyses within a morphological context as befits the multi-dimensional perspective of HPSG.</Paragraph>
    <Paragraph position="1"> The formal framework of HPSG is rather powerful; certainly powerful enough to capture many analyses in the style of classical generative phonology in which arbitrary mappings are allowed between underlying and surface representations. We have limited ourselves further by allowing only one phonological stratum in the grammar, and by adopting a notion of phonological compositionality that supports monotonicity.</Paragraph>
    <Paragraph position="2"> These restrictions make it much harder to carry over generalizations that depended on a procedural rule format. This is not a handicap, we contend, since it is heuristically valuable to view the data in a new light rather than just coercing traditional analyses into a modern grammar formalism.</Paragraph>
    <Paragraph position="3"> So what is a constraint-based style of phonological analysis? An important key, we claim, is the use of generalizations expressed at the level of prosodic types. Coupled with a systematic underspecification of lexical entries and a regime of type inheritance, this allows us to have different levels of linguistic abstraction while maintaining a 'concrete' relation between lexical and surface representations of phonology.</Paragraph>
    <Paragraph position="4"> We hope to have given enough illustration to show that our approach is viable. In future, we wish to extend these same techniques to a typologically diverse range of other linguistic phenomena. A second important goal is to show how the technology of finite-state automata can be invoked to deal with phonological information in HPSG.</Paragraph>
    <Paragraph position="5"> For although we have placed phonology within a general framework of linguistic constraints, the analyses we have presented only involve manipulation of regular expressions.</Paragraph>
  </Section>
class="xml-element"></Paper>