Four components of a Well-defined problems

Four components

•Initial state.

•Successor function.

•Goal test.

•Path cost.

 

Initial state:

   The agent starts in.

Successor function:

   Given a state x,SUCCESSOR-FN(x)Returns a set of < action,successor> ordered pairs.

•The initial state and successor function define the state space.

 Goal test :

   Whether the given state is a goal state?

Path cost:

  Assigns numeric cost to each path.Step cost for taking action a from state x to y-denoted by c(x,a,y).

Solution:

  A path from initial to a goal state.

Solution quality:

   measured by cost.

Optimal solution:

   Lowest path cost among all solutions.

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