High Level Thread-Based Competitive Or-Parallelism in Logtalk

• Type: Article in International Conference Proceedings Book
• Date: 2009

Authors

Paulo Moura (Author) Other; Ricardo Rocha (Author) FCUP; Sara C Madeira (Author) Other

Conference proceedings International

Title: PRACTICAL ASPECTS OF DECLARATIVE LANGUAGES

Pages: 107-121

11th International Symposium on Practical Aspects of Declarative Languages

Savannah, GA, JAN 19-20, 2009

Indexing

ISI Web of Knowledge - 2 Citations

Scopus - 2 Citations

Scientific classification

FOS: Natural sciences > Computer and information sciences

Other information

Authenticus ID: P-005-5NP

DOI: 10.1007/978-3-540-92995-6_8

Abstract (EN): This paper presents the logic programming concept of thread-based competitive or-parallelism, which combines the original idea of competitive or-parallelism with committed-choice nondeterminism and speculative threading. In thread-based competitive or-parallelism, an explicit; disjunction of subgoals is interpreted as a set of concurrent alternatives, each running in its own thread. The individual subgoals usually correspond to predicates implementing different procedures that, depending on the problem specifics, are expected to either fail or succeed with different performance levels. The subgoals compete for providing an answer and the first successful subgoal leads to the termination of the remaining ones. We discuss the implementation of thread-based competitive or-parallelism in the context of Logtalk, an object-oriented logic programming language, and present experimental results.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 15