Chinese number-names, tree adjoining languages, and mild context-sensitivity

  • Authors:
  • Daniel Radzinski

  • Affiliations:
  • Brown University

  • Venue:
  • Computational Linguistics
  • Year:
  • 1991

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Abstract

The Tree Adjoining Grammar formalism, both its single- as well as multiple-component versions, has recently received attention as a basis for the description and explication of natural language. We show in this paper that the number-name system of Chinese is generated neither by this formalism nor by any other equivalent or weaker ones, suggesting that such a task might require the use of the more powerful Indexed Grammar formalism. Given that our formal results apply only to a proper subset of Chinese, we extensively discuss the issue of whether they have any implications for the whole of that natural language. We conclude that our results bear directly either on the systax of Chinese or on the interface between Chinese and the cognitive component responsible for arithmetic reasoning. Consequently, either Tree Adjoining Grammars, as currently defined, fail to generate the class of natural languages in a way that discriminates between linguistically warranted sublanguages, or formalisms with generative power equivalent to Tree Adjoining Grammar cannot serve as a basis for the interface between the human linguistic and mathematical faculties.