Naturalness vs. predictability: a key debate in controlled languages

  • Authors:
  • Peter Clark;William R. Murray;Phil Harrison;John Thompson

  • Affiliations:
  • Boeing Research and Technology, Seattle, WA;Boeing Research and Technology, Seattle, WA;Boeing Research and Technology, Seattle, WA;Boeing Research and Technology, Seattle, WA

  • Venue:
  • CNL'09 Proceedings of the 2009 conference on Controlled natural language
  • Year:
  • 2009

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Abstract

In this paper we describe two quite different philosophies used in developing controlled languages (CLs): A "naturalist" approach, in which CL interpretation is treated as a simpler form of full natural language processing; and a "formalist" approach, in which the CL interpretation is "deterministic" (context insensitive) and the CL is viewed more as an English-like formal specification language. Despite the philosophical and practical differences, we suggest that a synthesis can be made in which a deterministic core is embedded in a naturalist CL, and illustrate this with our own controlled language CPL. In the second part of this paper we present a fictitious debate between an ardent "naturalist" and an ardent "formalist", each arguing their respective positions, to illustrate the benefits and tradeoffs of these different philosophies in an accessible way.