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PROGOL
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PROGOL : ウィキペディア英語版
PROGOL
Progol is Stephen Muggleton's implementation of Inductive Logic Programming used in computer science that combines "Inverse Entailment" with "general-to-specific search" through a refinement graph. 〔(Progol page at Imperial College )〕 "Inverse Entailment" is used with mode declarations to derive the most-specific clause within the mode language which entails a given example. This clause is used to guide a refinement-graph search.
Unlike the searches of Ehud Shapiro's Model Inference System (MIS) and J. Ross Quinlan's FOIL Progol's search is efficient and has a provable guarantee of returning a solution having the maximum "compression" in the search-space. To do so it performs an admissible A
*
-like search, guided by compression, over clauses which subsume the most specific clause.
Progol deals with noisy data by using the "compression measure" to trade-off the description of errors against the hypothesis description length. Progol allows arbitrary Prolog programs as background knowledge and arbitrary definite clauses as examples. Despite this bench-tests show that the efficiency of Progol compares favourably with FOIL.
==References==



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