Accession Number:

ADA066897

Title:

An Alphard Specification of a Correct and Efficient Transformation on Data Structures.

Descriptive Note:

Interim rept.,

Corporate Author:

CARNEGIE-MELLON UNIV PITTSBURGH PA DEPT OF COMPUTER SCIENCE

Personal Author(s):

Report Date:

1978-12-01

Pagination or Media Count:

30.0

Abstract:

In this paper we study standard program components applicable to a wide variety of design tasks we choose for this study the specific problem domain of data structures for general search problems. Within this domain transformations for converting solutions of simple searching problems to solutions of more complex problems have been developed. We discuss one of those transformations, specify precisely the transformation and its conditions of applicability, and prove its correctness we accomplish this by casting it in terms of abstract data types -- specifically by using the Alphard form mechanism. We also demonstrate that the costs of the structures derived by this transformation are only slightly greater than the costs of the original solutions. The transformation we describe has already been used to develop a number of new algorithms, and it represents a new level of generality in software engineering tools.

Subject Categories:

  • Theoretical Mathematics
  • Computer Programming and Software

Distribution Statement:

APPROVED FOR PUBLIC RELEASE