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
AUTOMATIC SYNCHRONISING: Automatic Synchronisation uses engine driven synchronising alternators to detect electrically any increase or decrease in a slave engine's speed.  Ea

Design, Construction and Type Certificate The following chapter covers the initial design, construction, registration and test flying of the first prototype of a new aircraft.


Control Surfaces  As with a flight control system, a guidance algorithm uses control surfaces to control the behaviour of an airframe.         - Rudder, ailerons, elev


Exhaust duct arrangement in Aircraft: Exhaust ducts are invariably positioned to ensure that on the ground as the hot gases are directed away from the maintenance crews and air

Machine molding is suitable for the faster and uniform quality moulds, needed for mass production of castings. For preparing the moulds, various moulding machines are used. Majorit

apply equations to solve problems for specified aerodynamic applications. Need some inputs regarding this.

are retail investors or traders permitted to naked short a stock? who is permitted to naked short a stock assuming there has been no suspension of this practice and following the f

Would you be able to assit me with a 40 question, multiple chioice quiz today ?