Extending LogicWeb via Hereditary Harrop Formulas

Keehang KWON  Dae-Seong KANG  

IEICE TRANSACTIONS on Information and Systems   Vol.E91-D   No.6   pp.1827-1829
Publication Date: 2008/06/01
Online ISSN: 1745-1361
DOI: 10.1093/ietisy/e91-d.6.1827
Print ISSN: 0916-8532
Type of Manuscript: LETTER
Category: Fundamentals of Software and Theory of Programs
prolog,  semantic Web,  interface,  

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We propose HHWeb, an extension to LogicWeb with hereditary Harrop formulas. HHWeb extends the LogicWeb of Loke and Davison by allowing goals of the form ( x1... xn D) G (or equivalently x1... xn(D G)) where D is a web page and G is a goal. This goal is intended to be solved by instantiating x1,...,xn in D by new names and then solving the resulting goal. The existential quantifications at the head of web pages are particularly flexible in controlling the visibility of names. For example, they can provide scope to functions and constants as well as to predicates. In addition, they have such simple semantics that implementation becomes more efficient. Finally, they provide a client-side interface which is useful for customizing web pages.