knowledge representation

Knowledge representation is an essential problem of symbolic-based artificial intelligence

In symbolic functionalism we represent intelligence via manipulation of our beliefs about the surrounding world and knowledge we know.
Therefore we have to address two fundamental issues
How to represent knowledge ?
How to implement the process of reasoning ?
State space is a space of possible courses of inference when combining
actual beliefs about current world
general knowledge
rules of inference
Three levels of the Knowledge-based System conceptualization:
system engineering level – physical realization of the system
symbol level – symbol system (program ) specification
knowledge level – knowledge (to be represented) specification

Knowledge Level Hypothesis
There is a distinct computer level lying immediately above the program (symbol level), which is characterized by knowledge as the medium and principle of rationality as the law of behavior.
Three levels of the Knowledge-based System conceptualization:
system engineering level – physical realization of the system
symbol level – symbol system (program ) specification
knowledge level – knowledge (to be represented) specification

Knowledge Level Hypothesis
There is a distinct computer level lying immediately above the program (symbol level), which is characterized by knowledge as the medium and principle of rationality as the law of behavior.