CLIPS usrguide.pdf

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Microsoft Word - CLIPS User's Guide 6.20
User’s Guide
Version 6.20
March 31st 2002
by
Joseph C. Giarratano, Ph.D.
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CLIPS User’s Guide
Table of Contents
Chapter 1 Just the Facts ...................................................................1
Introduction ............................................................................................................1
The Beginning and the End .....................................................................................2
Making a List ..........................................................................................................2
And Checking It Twice.............................................................................................3
Clearing Up the Facts .............................................................................................5
Sensitive Fields and Slurping...................................................................................6
A Matter of Style .....................................................................................................13
Getting Spaced Out ................................................................................................14
Retract that Fact .....................................................................................................16
Watch that Fact ......................................................................................................18
With a Little Help ....................................................................................................19
Chapter 2 Following the Rules ..........................................................21
Making Good Rules ................................................................................................21
Let's Get Quacking .................................................................................................24
Kick your Duck .......................................................................................................25
Show Me the Rules.................................................................................................27
Write to Me.............................................................................................................28
Other Features .......................................................................................................29
Chapter 3 Adding Details..................................................................31
Stop And Go...........................................................................................................31
Take a Walk ...........................................................................................................32
A Question of Strategy ............................................................................................32
Gimme Deffacts......................................................................................................33
Selective Elimination...............................................................................................35
Watch It!.................................................................................................................35
A Good Match ........................................................................................................36
Other Features .......................................................................................................37
Chapter 4 Variable Interests..............................................................41
Let's Get Variable ...................................................................................................41
Be Assertive ...........................................................................................................42
What the Duck Said ................................................................................................43
The Happy Bachelor ...............................................................................................44
It's Not Important ....................................................................................................45
Going Wild .............................................................................................................47
The Ideal Bachelor..................................................................................................49
The Lucky Duck......................................................................................................51
Chapter 5 Doing It Up In Style ............................................................53
Mr. Wonderful.........................................................................................................53
Bye-Bye .................................................................................................................55
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Ain't No Strings on Me.............................................................................................58
What's in a Name ...................................................................................................59
Chapter 6 Being Functional ..............................................................63
Not My Constraint ...................................................................................................63
Be Cautious............................................................................................................64
And Away We Go ...................................................................................................65
It's Elementary........................................................................................................66
Extensive Arguments ..............................................................................................67
Mixed Results.........................................................................................................68
Bound Bachelors ....................................................................................................69
Doing Your Own Thing ............................................................................................71
Other Features .......................................................................................................72
Chapter 7 How to Be in Control .........................................................75
Let's Start Reading .................................................................................................75
Being Efficient ........................................................................................................77
Other Features .......................................................................................................78
Chapter 8 Matters of Inheritance .........................................................83
How to be Objective................................................................................................83
The Class Stuff.......................................................................................................84
How the UPPIES Get Theirs....................................................................................86
The Illegitimate YUKKIE..........................................................................................91
Show Me................................................................................................................94
Other Features .......................................................................................................99
Chapter 9 Meaningful Messages .........................................................101
The Birds and the Bees...........................................................................................101
Dorky Duck ............................................................................................................103
Much Ado About Instances......................................................................................106
The Disappearing Duck...........................................................................................107
What Did You Have For Breakfast ...........................................................................108
Class Etiquette .......................................................................................................111
Other Features .......................................................................................................113
Chapter 10 Fascinating Facets............................................................115
A Slot Named Default..............................................................................................115
Cardinal Properties .................................................................................................118
Other Features .......................................................................................................119
Chapter 11 Handling Handlers ............................................................121
Your Primitive Self ..................................................................................................121
Make 'Em Pay Through the Nose.............................................................................125
Getting Around .......................................................................................................126
Primary Considerations ...........................................................................................127
The Power of Belief.................................................................................................129
The Truthful Daemon ..............................................................................................131
Get the Point ..........................................................................................................134
Treasure Maps .......................................................................................................140
Other Features .......................................................................................................145
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Chapter 12 Questions and Answers.....................................................147
Object Lessons.......................................................................................................147
Objects in the Database ..........................................................................................148
I'll Take Any............................................................................................................150
Design Decisions....................................................................................................151
Other Features .......................................................................................................154
Support Information ..........................................................................155
Index ...............................................................................................159

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