Putting logic-based distributed systems on stable grounds. Issue 4 (20th August 2015)

• Record Type: Journal Article
• Authors: AMELOOT, TOM J.; VAN DEN BUSSCHE, JAN; MARCZAK, WILLIAM R.; ALVARO, PETER; HELLERSTEIN, JOSEPH M.
• Is Part Of: Theory and practice of logic programming. Volume 16:Issue 4(2016)
• Page Start: 378
• Page End: 417
• Publication Date: 2015-08-20
• Subjects: Dedalus, -- Datalog, -- stable model semantics, -- distributed system, -- asynchronous communication; Logic programming -- Periodicals; Artificial intelligence -- Computer programs -- Periodicals; Constraint programming (Computer science) -- Periodicals; 005.115
• DOI: 10.1017/S1471068415000381
• Languages: English
• ISSNs: 1471-0684

Abstract

Abstract: In the Declarative Networking paradigm, Datalog-like languages are used to express distributed computations. Whereas recently formal operational semantics for these languages have been developed, a corresponding declarative semantics has been lacking so far. The challenge is to capture precisely the amount of nondeterminism that is inherent to distributed computations due to concurrency, networking delays, and asynchronous communication. This paper shows how a declarative, model-based semantics can be obtained by simply using the well-known stable model semantics for Datalog with negation. We show that the model-based semantics matches previously proposed formal operational semantics.