Chains of inference, Other Engineering

Chains of Inference

Now we look at how to get an agent to verify a given theorem using several search strategies. In previous lectures we have noted that, to specify a search problem, we have to describe the representation language for the artifacts being searched for, the starting state, the goal state (or some information regarding what a goal should look like?), and the operators- how to go from one state to another?.

We may state the problem of proving a given theorem from some axioms as a search problem. 3 different specifications give rise to 3 different ways to answer the problem, namely backward and forward chaining and proof by contradiction. In all of these provisions the representation language is predicate logic (not surprisingly), and operators are the rules of inference, which let us to rewrite a set of sentences as another set. We may think of each state in our search space as a sentence in first order logic.  For searching new sentences the operators will traverse this space. However, we are actually interested in searching a path from the start states to the goal state, as this path will constitute evidence. (Note that there are other ways to verify theorems such as exhausting the search for a counterexample and finding none - in this case we do not have a deductive evidence for the truth of the theorem, but we know this is true).

Posted Date: 10/2/2012 8:24:29 AM | Location : United States







Related Discussions:- Chains of inference, Assignment Help, Ask Question on Chains of inference, Get Answer, Expert's Help, Chains of inference Discussions

Write discussion on Chains of inference
Your posts are moderated
Related Questions

PROPELLER SHAFTS Most modern engines, both reciprocating and turbine, have flanged propeller shafts. Some of these flanges have integral internally threaded bushings that fit

Application of Vector and Scalar quantities in Vector Analysis subject

3. Earthway Corporation has target capital structure of 60 percent common stock, 5 percent preferred stock and 35 percent debt. Its cost of equity is 12.5 percent, the cost of pr

PEME5451/3451 SUSTAINABLE ENERGY PROCESSES Assignment 5: Transport fuels VLE submission deadline is Friday 24th February PART 1: (worth 40%, all parts marked equally) 1. Using the

Can you guys Solve Unit Operations Problems in Chemical engineering

Design Features of Supercritical Aerofoil • Blunt nose- rapid p pressure reduction around leading edge • Flat top- Reduce the flow acceleration on upper surface toreduc

Q. Describe the four main methods of strengthen crystalline materials against plastic yield. Ans. (1) Work Hardening: Strain hardening or work hardening is a phenomenon which

How to decouple complex variable matrix

how to decode arinc 429 words and send result to pc by rs232 bus