Logic programs, Computer Engineering

Assignment Help:

Logic Programs:

A subset of first order logic is "Logic programs". However logic program having a set of Horn clauses that are implication conjectures when there is a conjunction of literals that imply a single literal. Thus a logic program consists of implications that look like this example as:

\/X, Y, Z ( b1(X,Y) ^ b2(X)^ ... ^ bn(X,Y,Z) → h(X,Y))

So remember also that there in Prolog we have turn the implication around by which the implication sign points from left to right and then the head of the clause comes first. However we also assume universal quantification over all our literals but that can be removed.

Thus we can write Horn clauses as:

h(x,y) ← b1(X,Y) ^ b2(X) ^ ... ^ bn(X,Y,Z)

So there everybody understands what we are saying. And in fact we will adopt the convention of writing a conjunction of literals with a capital letter or a single literal with a lower case letter also. Although if we were interested in the first literal in the body of the above Horn clause or not interested in the others so then we could write as:

h(X,Y) ← b1, B

However we see that the conjunction of literals b2(X)^ ... ^ bn(X,Y,Z) has been replaced by B so we have utilised a comma instead of a sign.


Related Discussions:- Logic programs

Explain the graphic display system, Q. Explain the graphic display system? ...

Q. Explain the graphic display system? The function of your graphic display system is to display bit-mapped graphics on your monitor.  The image displayed on your system so com

Syntax of $display and $strobe, Syntax of $display and $strobe -  $disp...

Syntax of $display and $strobe -  $display ("format_string", par_1, par_2, ... ); -  $strobe ("format_string", par_1, par_2, ... ); -  $monitor ("format_string", par_1, p

List the various file attributes, List the various file attributes. A f...

List the various file attributes. A file has certain other attributes, which differ from one operating system to another, but typically consist of these: Name, identifier, type

Define flash memory, Define Flash Memory. It is an approach same to EEP...

Define Flash Memory. It is an approach same to EEPROM technology. A flash cell is based on a one transistor controlled by trapped charge just like an EEPROM cell.

Explain priority encoder with an example, Explain Priority encoder with an ...

Explain Priority encoder with an example. Ans. Priority encoder- Basically an encoder is a combinational circuit which performs the inverse operation of a decoder. The inp

Mapping, what is transform mapping and transaction mapping?

what is transform mapping and transaction mapping?

Simplify the boolean expression, Simplify the Boolean expression F = C(B + ...

Simplify the Boolean expression F = C(B + C)(A + B + C). Ans. Simplification of the given Boolean Expression F = C (B +C) (A+B+C) given as F = C (B+C) (A+B+C) = CB + CC [(A+B+C

How physical addressing is performed in wan, How physical addressing is per...

How physical addressing is performed in WAN?  WAN networks operate as similar to a LAN. All WAN technology describes the specific frame format a computer uses while sending an

Appropriate name for the superclass, Suppose that your team is then asked t...

Suppose that your team is then asked to expand the system. The publisher now wishes to make other computer science publications. As a team member, you are asked to make a class tha

#, advantages of dda line algoritm

advantages of dda line algoritm

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd