Accession Number : ADA298420

Title :   A Note on Zipf's Law, Natural Languages, and Noncoding DNA Regions.

Descriptive Note : Memorandum rept.,

Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE ARTIFICIAL INTELLIGENCE LAB

Personal Author(s) : Niyogi, Partha ; Berwick, Robert C.

PDF Url : ADA298420

Report Date : MAR 1995

Pagination or Media Count : 6

Abstract : In Phys. Rev. Letiers, 73:2. 5 Dec. 94, Mantegna et al. conclude on the basis of Zipf rank frequency data that noncoding DNA sequence regions are more like natural languages than coding regions. We argue on the contrary that an empirical fit to Zipf's law" cannot be used as a criterion for similarity to natural languages. Although DNA is a presumably an organized system of signs" in Mandelbrot's (1961) sense, an observation of statistical features of the sort presented in the Mantegna et al. paper does not shed light on the similarity between DNA's "grammar" and natural language grammars, just as the observation of exact Zipf-like behavior cannot distinguish between the underlying processes of tossing an M sided die or a finite-state branching process. (AN)

Descriptors :   *DEOXYRIBONUCLEIC ACIDS, *NATURAL LANGUAGE, MATHEMATICAL MODELS, STATISTICAL INFERENCE, CORRELATION, WORDS(LANGUAGE), STATISTICAL PROCESSES, COMPUTATIONAL LINGUISTICS, RANK ORDER STATISTICS, GRAMMARS.

Subject Categories : Linguistics
      Biochemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE