Page 75 - DCAP310_INTRODUCTION_TO_ARTIFICIAL_INTELLIGENCE_AND_EXPERT_SYSTEMS

Unit 4: LISP

When you evaluate a list, the LISP interpreter looks at the first symbol in the list and then Notes
at the function definition bound to that symbol. Then the instructions in the function
definition are carried out.
A single quotation mark, ‘, tells the LISP interpreter that it should return the following
expression as written, and not evaluate it as it would if the quote were not there.

Arguments are the information passed to a function. The arguments to a function are
computed by evaluating the rest of the elements of the list of which the function is the first
element.
A function always returns a value when it is evaluated (unless it gets an error); in addition,
it may also carry out some action called a “side effect”. In many cases, a function’s primary
purpose is to create a side effect.

4.6 Keywords

CMUCL: The CMUCL is a high-performance, free common LISP implementation.

Common LISP Implementation: It is licensed under a LISP-specific variant of the LGPL, and
derived from Digitool’s MCL product.
FORTRAN: It has been used for such projects as the design of bridges and aeroplane structures;
it is used for factory automation control, for storm drainage design, analysis of scientific data
and so on.
Functional Calculus: It is a theory allowing one to apply mathematical functions to mathematical
operators. It is now a branch (more accurately, several related areas) of the field of functional
analysis, connected with spectral theory.
Working Knowledge: It is a social enterprise dedicated to opening the eyes of business to young
talent available locally.

4.7 Review Questions

1. Define LISP?
2. What is the different syntax and numeric functions of LISP?
3. Explain manipulation functions.
4. Abbreviate and meaning of Car, Cdr, Cadr, Caddr.
5. Write the difference between Cadr and Caddr.

6. What are LISP functions? Describe the LISP functions.
7. Explain the procedures with examples.
8. Write the examples for the uses of syntax in the LISP.

Answers: Self Assessment

1. True 2. False

3. True 4. False
5. False 6. True
7. True 8. True

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