Backward chaining - artificial intelligence, Computer Engineering

Assignment Help:

Backward Chaining - Artificial intelligence

Given that we are just interested in constructing the path, we may set our initial state to be the theorem statement and search backwards until we find an axiom (or set of axioms). If we limited ourselves to only using equivalences as rewrite rules, then this approach is OK, because we may use equivalences in both ways, and any path from the theorem to axioms which is found will provide evidence. However, if we use inference rules to traverse from theorem to axioms, then we will have shown (proved) that, if the theorem is true, then the axioms are true. But already we know that the axioms are true. To get around this, we might invert our inference rules and try to work backwards. That is, the operators in the search really answer the question: what could be true in order to infer the state (logical sentence) we are at right now?

If our agent begins searching from the theorem statement and reaches the axioms, it has proved the theorem.  It is also problematic, because there are several answers to the inversion question, and the search space gets very high.

 


Related Discussions:- Backward chaining - artificial intelligence

Every sheet in a workbook in excel, Is there a way to apply the same format...

Is there a way to apply the same formatting to every  sheet in a workbook in Excel? Ans)  Yes. To do this, you will require to right click on one of the worksheet tabs and th

Explain pointers, Explain pointers We can have a pointer pointing to a ...

Explain pointers We can have a pointer pointing to a structure just the same way a pointer pointing to an int, such pointers are called as structure pointers

What are the benefits of electronic data interchange process, What are the ...

What are the benefits of electronic data interchange process? Advantages of Electronic Data Interchange: a. EDI replaces paper transactions along with electronic transac

draw the precedence diagram , The desired daily output for an assembly ...

The desired daily output for an assembly line is 360 units. This assembly line will operate 450 minutes per day. The following table have information on this product's task times a

What is the role of a controller in an mvc application, The controller resp...

The controller responds to user interactions, with the application, by selecting the act method to implement and also selecting the view to render.

Simplify the expressions using boolean postulates, Simplify the given expre...

Simplify the given expressions using Boolean postulates XY + X‾Z‾  + XY‾Z (XY + Z) Ans. XY + X‾Z‾ + XY‾Z (XY + Z) = XY + X‾Z‾ + XY‾Z (XY + Z) = XY + X‾Z‾  + XXYY‾Z

What is the use of inter process communication, What is the use of inter pr...

What is the use of inter process communication. Inter process communication gives a mechanism to allow the co-operating process to communicate with each other and synchronies t

Users to run programs at same time, A computer system that allows multiple ...

A computer system that allows multiple users to run programs at similar time   Multi tasking system

Data packets - universal serial bus, Data packets: A data packet consi...

Data packets: A data packet consists of the PID which is followed a 16-bit CRC and by 0-1023 bytes of data payload (up to 1024 in high speed and at most 8 at low speed) The

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