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pl:prolog:pllib:belief_network_specification [2019/06/27 15:50] (aktualna) |
| ====== Belief network specification ====== |
| {{tag>networks}} |
| ===== Description ===== |
| A specification of the belief network |
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| **Source**: PROLOG programming for artificial intelligence, 3rd Edition, Harlow, 2001, ISBN 0-201-40375-7. |
| ===== Download ===== |
| Program source code: {{belief_network_specification.pl}} |
| ===== Listing ===== |
| <code prolog> |
| % Figure 15.12 A specification of the belief network of Fig. 15.10 as |
| % expected by the program of Fig. 15.11. |
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| % Belief network "sensor" |
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| parent( burglary, sensor). % Burglary tends to trigger sensor |
| parent( lightning, sensor). % Strong lightning may trigger sensor |
| parent( sensor, alarm). |
| parent( sensor, call). |
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| p( burglary, 0.001). |
| p( lightning, 0.02). |
| p( sensor, [ burglary, lightning], 0.9). |
| p( sensor, [ burglary, not lightning], 0.9). |
| p( sensor, [ not burglary, lightning], 0.1). |
| p( sensor, [ not burglary, not lightning], 0.001). |
| p( alarm, [ sensor], 0.95). |
| p( alarm, [ not sensor], 0.001). |
| p( call, [ sensor], 0.9). |
| p( call, [ not sensor], 0.0). |
| </code> |
| ===== Comments ===== |
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