Browse Prior Art Database

Notes o n the Organization of the Environment of a Text Generation Grammar Disclosure Number: IPCOM000128667D
Original Publication Date: 1987-Dec-31
Included in the Prior Art Database: 2005-Sep-16
Document File: 25 page(s) / 80K

Publishing Venue

Software Patent Institute

Related People

Christian Matthiessen: AUTHOR [+2]


In this report, I have given a selective overview of what kinds of support the lexicogrammar of a text-generation system needs. I have focused on static distinctions that have to be made in the system, rather than on the processes involved in generating text, and have presented them in terms of Halliday's metafunctions. An account of the processes involved would have to include the selection of relevant information in the knowledge base, the planning of the speech acts to be performed, and the planning of the rhetorical organization of the text. Furthermore, I have focused on the content of the distinctions rather than on the notations or formalisms needed to deal with them.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 5% of the total text.

Page 1 of 25


Notes o n the Organization of the Environment of a Text Generation Grammar

Christian Matthiessen

ISI Reprint Series ISIIRS-87-177 April 1987 University of Southern California I - I Reprinted from Natural Language Generation: Recent Advances in Artificial Intelligence, Psychology, and Linguistics. INFORMATION SCIENCES INSTITUTE 213/822- I S I I

4675 Admiralty Way/hTarina del Rey/California 90292-6695 This research was supported by the Air Force Office of Scientific Research Contract No. F49620 84 C 0100. The views and conclusions m this report are those of the author and should not be interpreted as necessarily representing the official policies or endorsements, either explicit or implied, o the Air Force Office of Soentific Research of the US. Government.

ISl Reprint Series This report is one in a series of reprints of articles and papers written by ISI research staff and published in professional journals and conference proceedings. For a complete list of ISI reports, write to

Document Distribution USC/Information Sciences Institute

4676 Admiralty Way Marina del Rey, CA 90292-6695 USA


One of the many tasks in building a text-generation system is to design the environment in which the lexicogrammar (i.e. lexis and grammar) works. In this report, I will use English lexicogrammar to infer aspects of the organization of other parts of a text-generation system. The basic question is how the environment should be organized to support the lexicogrammar.

1.1 Lexicogrammar in generation

In the generation of text, there are a number of varied communicative demands on lexicogrammar, representing different kinds of considerations. We can think of these demands as being embodied in 'messages' given to lexicogrammar for expression. Consider just the 'messages' in a text that will be expressed as clauses. For any given 'message', three general tasks have to be accomplished. (1) An action or relation has to be represented together with one or more of the entities participating in it. (2) The reader (listener has to be told what to do with the representation (e.g. agree with it as say a description of past shared experience, supply some information requested by the speaker, treat the representation as an instruction to perform the action represented.) (3) The current 'message' has to be presented in such a way that the reader can relate it to its context, e.g. the entities participating in the action/relation have to be identified to the reader. These varied demands are integrated and represented as one wording,
i.e. one (linear) combination of structure and lexical items. -This integration and representation is the process of lexicogrammatical expression in text-generation, and the resource used is the lexicogrammar of the system.2

University of Southern California Page 1 Dec 31, 1987

Page 2 of 25

Notes o n the Organization of the Environment...