---
title: "X2MORF: A Morphological Component Based on Augmented Two-Level Morphology"
authors:
  - "Harald Trost"
doi: ""
url: "https://ijcai.org/proceedings/1991/151"
pdf: "https://ijcai.org/proceedings/1991/0151.pdf"
venue: "Proceedings of the Twelfth International Joint Conference on Artificial Intelligence"
year: 1991
pages: "1024-1029"
track: "Natural Language"
keywords:
---

# X2MORF: A Morphological Component Based on Augmented Two-Level Morphology

Harald Trost

*Proceedings of the Twelfth International Joint Conference on Artificial Intelligence*, pages 1024-1029.

## Abstract

X2MORF1 is a language independent morphological component for the recognition and generation of word forms based on a lexicon of morphs. The approach is based on two-level morphology. Extensions are motivated by linguistic data which call into question an underlying assumption of standard two-level morphology namely the independence of morphophonology and morphology as exemplified by two-level rules and continuation classes. Accordingly, I propose a model which allows for interaction between these two parts. Instead of using continuation classes, word formation is described in a feature-based unification grammar. Twolevel rules are provided with a morphological context in the form of feature structures. Information contained in the lexicon and the word formation grammar guides the application of two-level rules by matching the morphological context against the morphs. I present an efficient implementation of that model where rules are compiled into automata (as in the standard model) and where processing of the feature-based grammar is enhanced using an automaton derived from that grammar as a filter.