Morphology

This chapter provides an overview of work on morphology within HPSG.
Following a brief discussion how morphology relates to the issue of lexical
redundancy, and in particular horizontal redundancy, I map out the historical transition
from meta-level lexical rules of derivational morphology and grammatical
function change towards theories that are more tighly integrated with the hierarchical
lexicon (Riehemann 1998; Koenig 1999). After a discussion of fundamental issues
of inflectional morphology and the kind of models these favour, the chapter
summarises previous HPSG approaches to the issue and finally provides an
introduction to Information-based Morphology (Crysmann & Bonami 2016), a realisational
model of morphology that systematically exploits HPSG-style underspecification
in terms of multiple inheritance hierarchies.