AI 08226 Prolog (PROgramming in LOGic) - Department of ...

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input(_Agent, [], spacefree): ):- !. input(Agent, [Thing | _rest], spaceblock): ):- spaceblock(Agent, , Thing), !. input(Agent, [_head|Rest], Input):- input(Agent, Rest, Input). spaceblock(Agent, , Thing):- agent(Agent,Xagent, Yagent,_state, , Direction), object(Thing, Xobject, Yobject), block(Xagent, Yagent, , Direction, Xobject, Yobject). spaceblock(Agent, , Thing):- agent(Agent,Xagent, Yagent,_state, , Direction), agent(Thing, Xobject, Yobject, , _state2, _direction), block(Xagent, Yagent, , Direction, Xobject, Yobject). 108
When is a thing a block 109 % block/5 % block(Xagent, Yagent, , Direction, Xobject, Yobject). % Only need to define spaceblock cases % Top left is origin in this world block(X, Y1, up, X, Y2):- Y2 is Y1-1, 1, !. block(X, Y1, down, X, Y2):- Y2 is Y1+1, !. block(X1, Y, left, X2, Y):- X2 is X1-1, 1, !. block(X1, Y, right, X2, Y):- X2 is X1-1, 1, !.
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AI 08226 1 Prolog (PROgramming in L
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Introduction 3 Prolog is a declara
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Predicates and Functors 5 Prolog p
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Terms and variables 7 NO such thin
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Hints 9 Which prolog available for
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Use Comments in Code 11 Use Commen
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Prolog Syntax Constant Integer: 0,
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Prolog Syntax 15 Operators many bu
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Example Facts - greek.pl 17 male(c
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More on the use of not 19 female(a
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Prolog and logic (in later lectures
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The use of the Semi-colon - or 23
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Prolog programs 25 Consist of clau
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Querying the program in swi-prolog
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Program Execution 29 Prolog tries
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Example Prolog Execution I 31 - ru
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Example Prolog Execution III 33 Loo
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Example Prolog Execution V 35 Look
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On Prolog Execution 37 Prolog expl
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Tree1 39 rule(A) fact(X, , Color),
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Tree3 - first of the succeeds rule(
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Modelling Automata 43 A Finite Sta
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FSM as prolog - state change functi
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THE Full FSM in prolog : fsm1.pl 47
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Matching 49 General rules for matc
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Matching of Variables 51 Order of
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Matching 53 Matching in prolog alw
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Unification & The occurs check 55
Page 57 and 58: Testing data 57 valid(day, Day):-
Page 59 and 60: Example :Month Conversion program 5
Page 61 and 62: Arithmetic Program 61 run:-
Page 63 and 64: Unacceptable Prolog! The following
Page 65 and 66: Programming Techniques : Recursion
Page 67 and 68: Prolog So Far L1 - Prolog basics a
Page 69 and 70: Example of Recursion* 69 factorial
Page 71 and 72: Lists in Prolog* 71 List: an order
Page 73 and 74: Lists, characters and “strings”
Page 75 and 76: Handling Lists* 75 The [Head | Tai
Page 77 and 78: Building a List from Input* 77 bui
Page 79 and 80: Testing for a list - is_list/1 (bui
Page 81 and 82: Useful List Predicates* 81 Testing
Page 83 and 84: Useful List Predicates 83 Appendin
Page 85 and 86: Deleting the elements of a list 85
Page 87 and 88: - trace, permutation([a, b, c], L).
Page 89 and 90: More Built-in List Predicates* 89
Page 91 and 92: Asserting Predicates 91 assert/1 -
Page 93 and 94: Static and Dynamic Clauses 93 Cann
Page 95 and 96: Retracting Predicates 95 retract/1
Page 97 and 98: Retracting Predicates 97 Can use r
Page 99 and 100: Does a clause exist - listing. 99
Page 101 and 102: Combining clause and retract - list
Page 103 and 104: More on Findall 103 - assert( fish(
Page 105 and 106: Compound Terms via Findall 105 fish
Page 107: Prolog for Senses for FSM-Agent 107
Page 111 and 112: How is an agent run 111 % run_agent
Page 113 and 114: Compound Terms 113 Can use simple
Page 115 and 116: Alternative is to use compound term
Page 117 and 118: Alternative: Structure it yourself
Page 119 and 120: Tracing Frequency 119 trace, freque
Page 121 and 122: Variation 2 on Frequency with Cut (
Page 123 and 124: Goals and Cut Suppose rule p with
Page 125 and 126: Running the two versions - input1.
Page 127 and 128: So what happens 127 - same_rule(X,Y
Page 129 and 130: Run Time 129 member1 will succeed f
Page 131 and 132: The use of cut in negation - versio
Page 133 and 134: Negation as failure 133 - animal(X)
Page 135 and 136: Principles of Good Programming 135
Page 137 and 138: Thinking about prolog programs 137
Page 139 and 140: Consider intersection of sets probl
Page 141 and 142: Test cases: Set UNION without not 1
Page 143 and 144: Testing setunion with The CUT - set
Page 145 and 146: Set Intersection using not 145 Set
Page 147 and 148: Generalisation 147 The idea is to
Page 149 and 150: Example of structuralisation 149 C
Page 151 and 152: Some rules of good Prolog style 151
Page 153 and 154: merge - better style 153 merge2([ ]
Page 155 and 156: - trace, merge2([1,2],[1],L). Call
Page 157 and 158: Bubble Sort 157 bubblesort(List, ,
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Running swap.pl - with time/1 159
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Manipulating Characters atom_chars
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Manipulating Characters 163 name/2
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Manipulating Characters 165 Input
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- var(X), X = 2. - nonvar(X), X = 2
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What does the following code do 169
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Getting a listing 171 listing/0 li
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