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Ranjitha M
Department of Computer Science [PG]
Kristu Jayanti College[Autonomous]
Bengaluru
AI-Knowledge Representation
The importance of knowledge representation
 Contrary to the beliefs of early workers in AI, experience has shown that Intelligent
Systems cannot achieve anything useful unless they contain a large amount of
real-world - probably domain-specific - knowledge.
 Humans almost always tackle difficult real-world problems by using their resources
of knowledge - "experience", "training" etc.
 This raises the problem of how knowledge can be represented inside a computer,
in such a way that an AI program can manipulate it.
Definition and importance of knowledge
What is knowledge representation?
Humans are best at understanding, reasoning, and interpreting knowledge.
Human knows things, which is knowledge and as per their knowledge they perform various actions in
the real world.
But how machines do all these things comes under knowledge representation and reasoning.
Hence we can describe Knowledge representation as following:
Knowledge representation and reasoning (KR, KRR) is the part of Artificial intelligence which concerned
with AI agents thinking and how thinking contributes to intelligent behavior of agents.
It is responsible for representing information about the real world so that a computer can understand
and can utilize this knowledge to solve the complex real world problems such as diagnosis a medical
condition or communicating with humans in natural language.
It is also a way which describes how we can represent knowledge in artificial intelligence.
Knowledge representation is not just storing data into some database, but it also enables an
intelligent machine to learn from that knowledge and experiences so that it can behave
intelligently like a human.
What kind of knowledge to Represent:
 Object: All the facts about objects in our world domain. E.g., Guitars contains
strings, trumpets are brass instruments.
 Events: Events are the actions which occur in our world.
 Performance: It describe behavior which involves knowledge about how to do
things.
 Meta-knowledge: It is knowledge about what we know.
 Facts: Facts are the truths about the real world and what we represent.
 Knowledge-Base: The central component of the knowledge-based agents is the
knowledge base. It is represented as KB. The Knowledgebase is a group of the
Sentences (Here, sentences are used as a technical term and not identical with
the English language).
Types of knowledge

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ARtificial Intelligence Knowledge Representation.pptx

  • 1. Ranjitha M Department of Computer Science [PG] Kristu Jayanti College[Autonomous] Bengaluru AI-Knowledge Representation
  • 2.
  • 3.
  • 4.
  • 5. The importance of knowledge representation  Contrary to the beliefs of early workers in AI, experience has shown that Intelligent Systems cannot achieve anything useful unless they contain a large amount of real-world - probably domain-specific - knowledge.  Humans almost always tackle difficult real-world problems by using their resources of knowledge - "experience", "training" etc.  This raises the problem of how knowledge can be represented inside a computer, in such a way that an AI program can manipulate it.
  • 6. Definition and importance of knowledge What is knowledge representation? Humans are best at understanding, reasoning, and interpreting knowledge. Human knows things, which is knowledge and as per their knowledge they perform various actions in the real world. But how machines do all these things comes under knowledge representation and reasoning. Hence we can describe Knowledge representation as following: Knowledge representation and reasoning (KR, KRR) is the part of Artificial intelligence which concerned with AI agents thinking and how thinking contributes to intelligent behavior of agents. It is responsible for representing information about the real world so that a computer can understand and can utilize this knowledge to solve the complex real world problems such as diagnosis a medical condition or communicating with humans in natural language. It is also a way which describes how we can represent knowledge in artificial intelligence. Knowledge representation is not just storing data into some database, but it also enables an intelligent machine to learn from that knowledge and experiences so that it can behave intelligently like a human.
  • 7. What kind of knowledge to Represent:  Object: All the facts about objects in our world domain. E.g., Guitars contains strings, trumpets are brass instruments.  Events: Events are the actions which occur in our world.  Performance: It describe behavior which involves knowledge about how to do things.  Meta-knowledge: It is knowledge about what we know.  Facts: Facts are the truths about the real world and what we represent.  Knowledge-Base: The central component of the knowledge-based agents is the knowledge base. It is represented as KB. The Knowledgebase is a group of the Sentences (Here, sentences are used as a technical term and not identical with the English language).