Unification algorithm, Computer Engineering

Assignment Help:

Unification Algorithm:

Here if notice for instance that to unify two sentences as we must find a substitution that makes the two sentences the same. Furthermore remember there that we write V/T to signify in which we have substituted term T for variable V as read the "/" sign as "is substituted by". So now here our purpose of this algorithm will be to produce a substitution as a set of pairs V/T for a given pair of sentences. Here notice for instance example like the output for the pair of sentences as: 

 knows(john,X) 

knows(john, mary) 

will be: {X/mary}. Whether for the two sentences above involving jack and the function should fail as there was no way to unify the sentences. 

  • Thus if notice for describe instance the algorithm we use to simplify some functions it calls internally as.

  There the function isa_variable(x) checks where x is a variable. 

  • And another function isa_compound(x) checks whether x is a compound expression:

Here if we considered for instance that either a predicate or type a function or a connective usually contains subparts. Hence the subparts of a predicate or function are the arguments. Now there subparts of a connective are the things it connects. In fact we write  args(x)  for the subparts of compound expression x. So always remember that args(x) outputs a list: as the list of subparts.


Related Discussions:- Unification algorithm

Propositional truth tables, Propositional truth tables: There {X\t} is...

Propositional truth tables: There {X\t} is a substitution that replaces all occurances of variable X with a term representing an object t as:  ∀X. A is true if and only

If the system is not booting what can we do, First we must go to bios and s...

First we must go to bios and should check boot sequence,local add statusOr we should check RAM & check h.d.d cable. check cd writer for cd or dvd

Create a complete mp3 player, Write a GUI/MP3 program called MP3Random that...

Write a GUI/MP3 program called MP3Random that reads all MP3 les in a directory and plays them in random order. The GUI should have a little window with: 1. A button Next that s

What is a null object in c++, It is an object of a number of classes whose ...

It is an object of a number of classes whose purpose is to indicate that a real object of that class does not exist. One common use for a null object is a return value from a membe

Realize x-nor gate using nand gate, Q. A. Which gates are called Universa...

Q. A. Which gates are called Universal Gates? Why? B. State and prove any one of the DeMorgen's Laws. Show that these theorems can be extended up to any number of variables.

C, Write a ‘C’ functions to arrange the elements of an integer array in suc...

Write a ‘C’ functions to arrange the elements of an integer array in such a way that all the negative elements are before the positive elements. The array is passed to it as an arg

What is collection objects in vb, Likewise to arrays but is preferred over ...

Likewise to arrays but is preferred over an array due to of the following reasons. 1. A collection objects uses less Memory than an array. 2. It gives methods to add and dele

Find the minimum sop and pos expression, Find the minimum SOP and POS expre...

Find the minimum SOP and POS expression for the following functions using Karnaugh Map and realize the expression using appropriate gates. Also realize SOP form using NAND-to-NAND

What is the use of ''using'' declaration in c++, A using declaration in C++...

A using declaration in C++ makes it likely to use a name from a namespace without the scope operator.

Difference between data warehousing and data mining, Difference between dat...

Difference between data warehousing and data mining The difference between data warehousing and data mining is that data warehousing shows to the data storage while data mining

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