Integrating Logic Rules with Everything Else, Seamlessly

This paper presents a language, Alda, that supports all of logic rules, sets, functions, updates, and objects as seamlessly integrated built-ins. The key idea is to support predicates in rules as set-valued variables that can be used and updated in any scope, and support queries using rules as eithe...

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Bibliographic Details
Published in:Theory and practice of logic programming Vol. 23; no. 4; pp. 678 - 695
Main Authors: LIU, YANHONG A., STOLLER, SCOTT D., TONG, YI, LIN, BO
Format: Journal Article
Language:English
Published: Cambridge Cambridge University Press 01.07.2023
Subjects:
Access control
Hypotheses
Interfaces
Logic
Logic programming
Object oriented programming
Object-oriented languages
Programming languages
Semantics
Variables
ISSN:1471-0684, 1475-3081
Online Access:Get full text
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Summary:This paper presents a language, Alda, that supports all of logic rules, sets, functions, updates, and objects as seamlessly integrated built-ins. The key idea is to support predicates in rules as set-valued variables that can be used and updated in any scope, and support queries using rules as either explicit or implicit automatic calls to an inference function. We have defined a formal semantics of the language, implemented a prototype compiler that builds on an object-oriented language that supports concurrent and distributed programming and on an efficient logic rule system, and successfully used the language and implementation on benchmarks and problems from a wide variety of application domains. We describe the compilation method and results of experimental evaluation.
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ISSN:1471-0684
1475-3081
DOI:10.1017/S1471068423000108