Accession Number:

ADA159821

Title:

The RAND-ABEL Programming Language: History, Rationale, and Design.

Descriptive Note:

Interim rept.,

Corporate Author:

RAND CORP SANTA MONICA CA

Report Date:

1985-08-01

Pagination or Media Count:

54.0

Abstract:

This report describes the motivations behind the development of the RAND-ABLE programming language and some of its novel features. RAND-ABEL was designed to meet the needs of the Rand Strategy Assessment Center, which is building a large system for automated war gaming in which separate rule-based models represent U.S., Soviet, and third-country behavior. To satisfy the requirements for speed and transparency, the language was designed to be 1 rapidly compilable and executable 2 self-documenting 3 understandable by nonprogrammer domain experts after modest instruction 4 reasonably easy to learn and use, especially for modifying or incrementally extending existing code 5 portable across different computers and 6 well suited to development of large and complex rule-based simulations. Certain of its features are unique the ability to express directly in RAND-ABEL source code such natural structures as decision tables isomorphic with decision trees and order tables, which lay out orders to be executed sequentially, and its novel declaration-by-example feature, which is useful for rule-based programs with enumerated variables and many distinct data types. RAND-ABEL has built-in support for a data dictionary for communication between separate modules. Author

Subject Categories:

  • Computer Programming and Software
  • Computer Hardware

Distribution Statement:

APPROVED FOR PUBLIC RELEASE