29. APTITUDE INTERESTS FINANCIAL NEED RECOMMENDATION OF A MAJOR College Major Advisor: Initial Block Diagram

30. APTITUDE INTERESTS FINANCIAL NEED RECOMMENDATION OF A MAJOR College Major Advisor: Expanded Block Diagram math skills prog. skills manual dexterity computers problem solving repair things desk vs. field job at graduation

31. math? (yes, no) programming (yes, no) manual dexterity (yes, no) computers (yes, no) problem solving (yes, no) place (desk, field) repair (yes, no) finance (yes, no) APTITUDE INTERESTS SUGGESTED MAJOR College Major Advisor: Dependency Diagram

39. KR With Frames ANIMALS MAMMALS REPTILES BIRDS FISH DOG HUMAN WHALE PENGUIN LONG JOHN SILVER Reproduce: Yes Life-Form: Yes Scales: Yes Warmblooded: No Warmblooded: Yes Spinal Cord: Yes Legs: 4 Legs: 2 Legs: 1 Legs: 0 Fins: Yes Legs: 2 Wings: Yes Feathers: Yes Feathers: No Scales: Yes Fins: yes

41. KR With Semantic Networks LIGHT WORKING HEADLIGHT FUNCTIONAL LIGHT BULB FUNCTIONAL CIRCUIT IS-A HAS-A HAS-A

43. KR with Multiple Schemes IF Battery-Age < 5 and Battery_terminals are Uncorroded THEN Battery can work If Battery can work and Fuse is Functional and Wiring is Functional THEN Electric Circuit can work ELECTRIC SUBSYSTEM IGNITION HEADLIGHT LIGHT BULB ELECTRIC CIRCUIT Working Head Light Functional Light Bulb Functional Circuit Working Battery Functional Fuse Functional Wiring 5-Years Old Uncorroded Terminals HAS-A HAS-A HAS-A HAS-A NEEDS-A HAS-A NEEDS-A

50. Example Variables: A = have $10,000 B = younger than 30 C = education at college level D = annual income > = $40,000 E = invest in securities F = invest in growth stocks G = invest in IBM stocks Rules: R1: if A and C then E R2: if D and C then F R3: if B and E then F R4: if B then C R5: if F then G Initial Facts: A and B