---
title: "A Two Level Modular System for Natural Language Understanding"
authors:
  - "Giovanni Guida"
  - "Marco Somalvico"
doi: ""
url: "https://ijcai.org/proceedings/1979/76"
pdf: "https://ijcai.org/proceedings/1979/0076.pdf"
venue: "Proceedings of the Sixth International Joint Conference on Artificial Intelligence"
year: 1979
pages: ""
track: ""
keywords:
---

# A Two Level Modular System for Natural Language Understanding

Giovanni Guida, Marco Somalvico

*Proceedings of the Sixth International Joint Conference on Artificial Intelligence*.

## Abstract

This paper is intended to propose a new methodological approach to the conception of natural 1guage understanding systems. This contribution is supported by the design and implementation of DONAU. The system is based on a two level modular architecture. The horizontal level allows an independent and parallel development of the single segments of the system (syntactic analyser, semantic analyser, information extractor, legality controller). ·rhe vertical level ensures the possibility of changing the definition of the semantic domain on which particular versions of the system can be oriented and specialized in a simple, incremental, an~ user-oriented way. DONAU is written in LISP and is available from the authors.