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pl:prolog:pllib:meta_interpreter_3 [2019/06/27 15:50] (aktualna) |
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| + | ====== Meta interpreter 3 ====== | ||
| + | {{tag>metainterpreter}} | ||
| + | ===== Description ===== | ||
| + | A meta-interpreter for reasoning with uncertainty | ||
| + | |||
| + | **Source**: The Art of Prolog | ||
| + | ===== Download ===== | ||
| + | Program source code: {{meta_interpreter_3.pl}} | ||
| + | ===== Listing ===== | ||
| + | <code prolog> | ||
| + | /* | ||
| + | solve(Goal,Certainty) :- | ||
| + | Certainty is our confidence that Goal is true. | ||
| + | */ | ||
| + | solve(true,1) :- !. | ||
| + | solve((A,B),C) :- !, | ||
| + | solve(A,C1), solve(B,C2), minimum(C1,C2,C). | ||
| + | solve(A,1) :- builtin(A), !, A. | ||
| + | solve(A,C) :- | ||
| + | clause_cf(A,B,C1), solve(B,C2), C is C1 * C2. | ||
| + | |||
| + | minimum(X,Y,X) :- X =< Y, !. | ||
| + | minimum(X,Y,Y) :- X > Y, !. | ||
| + | |||
| + | % Program 17.9 A meta-interpreter for reasoning with uncertainty | ||
| + | </code> | ||
| + | ===== Comments ===== | ||
