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Tabled logic programming information


Tabling is a technique first developed for natural language processing, where it was called Earley parsing. It consists of storing in a table (a.k.a. chart in the context of parsing) partial successful analyses that might come in handy for future reuse.

Tabling consists of maintaining a table of goals that are called during execution, along with their answers, and then using the answers directly when the same goal is subsequently called. Tabling gives a guarantee of total correctness for any (pure) Prolog program without function symbols.[1]

Tabling can be extended in various directions. It can support recursive predicates through SLG resolution or linear tabling. In a multi-threaded Prolog system tabling results could be kept private to a thread or shared among all threads. And in incremental tabling, tabling might react to changes.[2][3]

  1. ^ Körner, Philipp; Leuschel, Michael; Barbosa, Joao; Costa, Vitor Santos; Dahl, Veronica; Hermengildo, Manuel V.; Morales, Jose F.; Wielemaker, Jan; Diaz, Daniel; Abreu, Salvador; Ciatto, Giovanni (2022-05-17). "Fifty Years of Prolog and Beyond". Theory and Practice of Logic Programming. 22 (6): 776–858. doi:10.1017/s1471068422000102. hdl:10174/33387. ISSN 1471-0684.
  2. ^ Swift, T. (1999). "Tabling for non‐monotonic programming". Annals of Mathematics and Artificial Intelligence. 25 (3/4): 201–240. doi:10.1023/A:1018990308362. S2CID 16695800.
  3. ^ Zhou, Neng-Fa; Sato, Taisuke (2003). "Efficient Fixpoint Computation in Linear Tabling" (PDF). Proceedings of the 5th ACM SIGPLAN International Conference on Principles and Practice of Declarative Programming: 275–283.

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