The Case for NL: More Intuitive and Expressive for Complex Constraints

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5.2 The Case for NL: More Intuitive and Expressive for Complex Constraints

Respondents found natural language easier for specifying complex constraints than GUIs, especially for extended background contexts or numerous choices that wouldn’t reasonably fit into a GUI. Natural language was also preferred for expressing vague, nuanced, or open-ended constraints, like “don’t include offensive words” or “respond in a cheerful manner.” At a high level, respondents emphasized that natural language provides a more natural, familiar, and expressive way to communicate (potentially multiple) complex constraints, and, “trying to figure out how to use a GUI might be more tedious.”

Additionally, some respondents noted that, despite their preference for using GUIs to define constraints from time to time, they ultimately have to use natural language prompts due to API limitations. Moreover, some wished to reference “external resources” in constraints that are not feasible to directly include in prompts (e.g., “a large database / vocabulary”). These suggest that a dedicated “output-constraints” API field for specifying constraints could be advantageous, potentially through the use of a formal language or notation.

This paper is available on arxiv under CC BY-NC-SA 4.0 DEED license.

Authors:

(1) Michael Xieyang Liu, Google Research, Pittsburgh, PA, USA (lxieyang@google.com);

(2) Frederick Liu, Google Research, Seattle, Washington, USA (frederickliu@google.com);

(3) Alexander J. Fiannaca, Google Research, Seattle, Washington, USA (afiannaca@google.com);

(4) Terry Koo, Google, Indiana, USA (terrykoo@google.com);

(5) Lucas Dixon, Google Research, Paris, France (ldixon@google.com);

(6) Michael Terry, Google Research, Cambridge, Massachusetts, USA (michaelterry@google.com);

(7) Carrie J. Cai, Google Research, Mountain View, California, USA (cjcai@google.com).