36 Questions
What logic is Prolog based on?
Predicate logic
In Prolog, what are the formulas represented as?
Horn clauses
What does a Prolog program primarily describe?
The problem
How is the programming style of Prolog characterized?
Declarative programming
What type of computations is Prolog well suited for?
Recursive computations
In a Prolog program, what are the two types of information included?
Facts and rules
What is the connective used to represent AND in Prolog?
Comma
How are OR statements represented in Prolog?
Semicolon
What technique does Prolog use to solve requests?
Depth-first search
In Prolog, what happens if a particular path in the tree of potential solutions is not successful?
It rebuilds the solution step-by-step with backtracking
What can depth-first searches in Prolog potentially lead to?
An infinite loop
How are parent-child relationships represented in Prolog programs?
As trees
What happens if the order of the recursion base and the recursion step is switched in a Prolog program?
It changes the final result
In a recursive predicate definition in Prolog, what is the recursion base?
mother_of(ida,anna)
What does the Prolog error 'Stack limit (1.0Gb) exceeded' likely indicate?
An infinite loop in the program
What is the purpose of backtracking in Prolog?
To search exhaustively for solutions
What is the purpose of the request '?-street_wet' in Prolog?
To test if the formula can be derived from the facts and rules
What does the symbol ':-' represent in a Prolog rule?
The separation between positive and negative literals
What is the purpose of the command 'File/Consult' in Prolog?
To load a program
What is the significance of starting a variable with an uppercase letter in Prolog?
It indicates a variable
What is the purpose of adding '/n' at the end of a predicate in Prolog?
To indicate the number of arguments
What is the result of the request '?-student(X),sporty(X)' in the given example?
X=anna; false
What is the closed-world assumption in Prolog?
Everything that cannot be derived from true statements is false
What is recursion in Prolog?
The definition of a function or procedure that calls itself
What is the purpose of the request '?-student(john)' in the given example?
To test if john is a student
What is the purpose of the command 'File/New' in Prolog?
To create a new file
What causes the observed memory overflow in the given scenario?
The presence of an infinite loop in the Prolog program
What is the main difference between predicate logic and Prolog?
Prolog uses Horn clauses, while predicate logic does not
Which of the following is true about predicate logic?
It extends the expressive power of propositional logic
What is the purpose of the new variable Y1 introduced in the given scenario?
To provide a variable distinct from the existing Y
What happens when the order of rules or conditions is changed in a Prolog program?
The operational semantics change, but the declarative semantics do not
What is the primary reason for the observed memory overflow in the given scenario?
The application of the recursion rule before checking the recursion conditions
What is the purpose of the recursion base in the given scenario?
To provide a solution to the first condition
What is the difference between the declarative and operational semantics in Prolog?
The declarative semantics describe the meaning of a Prolog program, while the operational semantics describe the execution of the program
What is the role of Horn clauses in Prolog?
They allow Prolog to use a restricted version of predicate logic
What is the primary cause of the infinite loop in the given scenario?
The application of the recursion rule before checking the recursion conditions
Learn about how to use Prolog, a programming language introduced in the 1970s. Prolog is based on a subset of predicate logic and works with certain restricted clauses known as Horn clauses.
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