Representation of background knowledge
Influences: A single factor that makes an outcome more likely:
- (easier (strong-actor) (inflate balloon))
- (easier (more-elastic) (inflate balloon))
Inference Rules: How to recognize when factors are present
- (act stretch) ? (more-elastic)
- (old-actor) ? (strong-actor)
- (age adult) ? (old-actor)
Use of background knowledge
- Suggest hypotheses that are tested against further examples
- Suggest revisions to inaccurate hypotheses
- Multiple necessary causes
- Multiple sufficient causes