Artificial Intelligence and Automation
Artificial intelligence (AI) focuses on getting machines to do things that we would call intelligent behavior. Intelligence – whether artificial or otherwise – does not have a precise definition, but there are many activities and behaviors that are consid
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Artificial Inte 14. Artificial Intelligence and Automation
Dana S. Nau
Artificial intelligence (AI) focuses on getting machines to do things that we would call intelligent behavior. Intelligence – whether artificial or otherwise – does not have a precise definition, but there are many activities and behaviors that are considered intelligent when exhibited by humans and animals. Examples include seeing, learning, using tools, understanding human speech, reasoning, making good guesses, playing games, and formulating plans and objectives. AI focuses on how to get machines or computers to perform these same kinds of activities, though not necessarily in the same way that humans or animals might do them.
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14.2 Emerging Trends and Open Challenges ............................ 266 References .................................................. 266
necessary and sufficient means for general intelligent action and their heuristic search hypothesis [14.1]: The solutions to problems are presented as symbol structures. A physical-symbol system exercises its intelligence in problem solving by search – that is – by generating and progressively modifying symbol structures until it produces a solution structure. On the other hand, there are several important topics of AI research – particularly machine-learning techniques such as neural networks and swarm intelligence – that are subsymbolic in nature, in the sense that they deal with vectors of real-valued numbers without attaching any explicit meaning to those numbers. AI has achieved many notable successes [14.2]. Here are a few examples:
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Telephone-answering systems that understand human speech are now in routine use in many companies.
Part B 14
To most readers, artificial intelligence probably brings to mind science-fiction images of robots or computers that can perform a large number of human-like activities: seeing, learning, using tools, understanding human speech, reasoning, making good guesses, playing games, and formulating plans and objectives. And indeed, AI research focuses on how to get machines or computers to carry out activities such as these. On the other hand, it is important to note that the goal of AI is not to simulate biological intelligence. Instead, the objective is to get machines to behave or think intelligently, regardless of whether or not the internal computational processes are the same as in people or animals. Most AI research has focused on ways to achieve intelligence by manipulating symbolic representations of problems. The notion that symbol manipulation is sufficient for artificial intelligence was summarized by Newell and Simon in their famous physical-symbol system hypothesis: A physical-symbol system has the
14.1 Methods and Application Examples ........ 14.1.1 Search Procedures ........................ 14.1.2 Logical Reasoning ........................ 14.1.3 Reasoning About Uncertain Information ......... 14.1.4 Planning ..................................... 14.1.5 Games ...........................
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