Programming in PROLOG: Using the ISO Standard (Paperback, 5)

1 Tutorial Introduction.- Gives the student a feel for what it is like to program in Prolog. Introduces objects, relationships, facts, rules, variables.- 1.1 Prolog.- 1.2 Objects and Relationships.- 1.3 Programming.- 1.4 Facts.- 1.5 Questions.- 1.6 Variables.- 1.7 Conjunctions.- 1.8 Rules.- 1.9 Summary and Exercises.- 2 A Closer Look.- More detailed presentation of Prolog syntax and data structures.- 2.1 Syntax.- 2.1.1 Constants.- 2.1.2 Variables.- 2.1.3 Structures.- 2.2 Characters.- 2.3 Operators.- 2.4 Equality and Unification.- 2.5 Arithmetic.- 2.6 Summary of Satisfying Goals.- 2.6.1 Successful satisfaction of a conjunction of goals.- 2.6.2 Consideration of goals in backtracking.- 2.6.3 Unification.- 3 Using Data Structures.- Representing objects and relationships by using trees and lists. Developing several standard Prolog programming techniques.- 3.1 Structures and Trees.- 3.2 Lists.- 3.3 Recursive Search.- 3.4 Mapping.- 3.5 Recursive Comparison.- 3.6 Joining Structures Together.- 3.7 Accumulators.- 3.8 Difference Structures.- 4 Backtracking and the "Cut".- How a set of clauses generates a set of solutions. Using "cut" to modify the control sequence of running Prolog programs.- 4.1 Generating Multiple Solutions.- 4.2 The "Cut".- 4.3 Common Uses of the Cut.- 4.3.1 Confirming the Choice of a Rule.- 4.3.2 The "cut-fail" Combination.- 4.3.3 Terminating a "generate and test".- 4.4 Problems with the Cut.- 5 Input and Output.- Facilities available for the input and output of characters and structures. Developing a program to read sentences from the user and represent the structure as a list of words, which can be used with the Grammar Rules of Chapter.- 5.1 Reading and Writing Terms.- 5.1.1 Reading Terms.- 5.1.2 Writing Terms.- 5.2 Reading and Writing Characters.- 5.2.1 Reading Characters.- 5.2.2 Writing Characters.- 5.3 Reading English Sentences.- 5.4 Reading and Writing Files.- 5.4.1 Opening and closing streams.- 5.4.2 Changing the current input and output.- 5.4.3 Consulting.- 5.5 DeclaringOperators.- 6 Built-in Predicates.- Definition of the "core" built-in predicates, with sensible examples of how each one is used. By this point, the reader should be able to read reasonably complex programs, and should therefore be able to absorb the built-in predicates by seeing them in use.- 6.1 EnteringNew Clauses.- 6.2 Success and Failure.- 6.3 Classifying Terms.- 6.4 Treating Clauses as Terms.- 6.5 Constructing and Accessing Components of Structures.- 6.6 Affecting Backtracking.- 6.7 Constructing Compound Goals.- 6.8 Equality.- 6.9 Input and Output.- 6.10 Handling Files.- 6.11 Evaluating Arithmetic Expressions.- 6.12 Comparing Terms.- 6.13 Watching Prolog atWork.- 7 More Example Programs.- Many example programs are given, covering a wide range of interests. Examples include list processing, set operations, symbolic differentiation and simplification of formula.- 7.1 A Sorted Tree Dictionary.- 7.2 Searching a Maze.- 7.3 The Towers of Hanoi.- 7.4 Parts Inventory.- 7.5 List Processing.- 7.6 Representing andManipulating Sets.- 7.7 Sorting.- 7.8 Using the Database.- 7.8.1 Random.- 7.8.2 Gensym.- 7.8.3 Findall.- 7.9 SearchingGraphs.- 7.10 Sift the Two's and Sift the Three's.- 7.11 Symbolic Differentiation.- 7.12 Mapping Structures and Transforming Trees.- 7.13 Manipulating Programs.- 7.14 Bibliographic Notes.- 8 Debugging Prolog Programs.- By this point, the reader will be able to write reasonable programs, and so the problem of debugging will be relevant. Flow of control model, hints about common bugs, techniques of debugging..- 8.1 Laying out Programs.- 8.2 Common Errors.- 8.3 The Tracing Model.- 8.4 Tracing and Spy Points.- 8.4.1 Examining the Goal.- 8.4.2 Examining the Ancestors.- 8.4.3 Altering the Degree of Tracing.- 8.4.4 Altering the Satisfaction of the Goal.- 8.4.5 Other Options.- 8.4.6 Summary.- 8.5 Fixing Bugs.- 9 Using Prolog Grammar Rules.- Applications of existing techniques. Using Grammar Rules. Examining the design decision