If we are going to act rationally in our environment, then we must have some way of describing that environment and drawing inferences from that representation.
how do we describe what we know about the world ?
how do we describe it concisely ?
how do we describe it so that we can get hold of the right piece of knowledge when we need it ?
how do we generate new pieces of knowledge ?
how do we deal with uncertain knowledge ?
Knowledge
Declarative
Procedural
Declarative knowledge deals with factoid questions (what is the capital of India? Etc.)
Procedural knowledge deals with “How”
Procedural knowledge can be embedded in declarative knowledge
Planning
Given a set of goals, construct a sequence of actions that achieves those goals:
often very large search space
but most parts of the world are independent of most other parts
often start with goals and connect them to actions
no necessary connection between order of planning and order of execution
what happens if the world changes as we execute the plan and/or our actions don’t produce the expected results?
Learning
If a system is going to act truly appropriately, then it must be able to change its actions in the light of experience:
how do we generate new facts from old ?
how do we generate new concepts ?
how do we learn to distinguish different situations in new environments ?
Interacting with the Environment
In order to enable intelligent behaviour, we will have to interact with our environment.
Properly intelligent systems may be expected to:
accept sensory input
vision, sound, …
interact with humans
understand language, recognise speech, generate text, speech and graphics, …
