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Artificial Intelligence

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Artificial Intelligence

  1. 1. Artificial Intelligence
  2. 2. Contents Overview Applications Languages A.I. Introduction
  3. 3. IntroductionClaiming to be able to recreate the capabilities ofthe human mind, is both a challenge and aninspiration for philosophy.• It is the science and engineering of making intelligent machines, especially intelligent computer programs.
  4. 4. Are there limits to how intelligentmachines can be? Intelligence:“the capacity to learn and solve problems” Artificial Intelligence: ◦ Artificial intelligence (AI) is the intelligence of machines and robots and the branch of computer science that aims to create it  the ability to solve problems  the ability to act rationally  the ability to act like humans
  5. 5. Philosophy of A.I. Searles strong AI hypothesis: "The appropriately programmed computer with the right inputs & outputs would thereby have a mind in exactly the same sense human beings have minds." The artificial brain argument: The brain can be simulated. Technologically feasible to copy the brain directly into hardware and software, and that such a simulation will be essentially identical to the original.
  6. 6. History of artificial intelligence Classical philosophers Programmable Digital Computers (1940) 1943-1956:• McCulloch & Pitts: Boolean circuit model of brain• Dartmouth meeting: "Artificial Intelligence“ name adopted The golden years 1956−1974
  7. 7.  1986-- Rise of machine learning ◦ Neural networks return to popularity ◦ Major advances in machine learning algorithms and applications 1995-- AI as Science ◦ Integration of learning, reasoning, knowledge representation ◦ AI methods used in vision, language, data mining, etc
  8. 8.  2006: face recognition software available in consumer cameras 2003-2007 Robot driving: DARPA grand challenge Feb 2011 there came question answering robot.
  9. 9. Can AI SystemWork AsEfficient AsHuman
  10. 10.  How complicated is our brain? ◦ Neuron ◦ 10 12 neurons in a human brain ◦ many more synapses (10 14) connecting these neurons ◦ cycle time: 10 -3 seconds (1 millisecond) Howcomplex can we make computers? ◦ 108 or more transistors per CPU ◦ supercomputer: hundreds of CPUs, 1012 bits of RAM ◦ cycle times: order of 10 - 9 seconds Conclusion YES
  11. 11. LanguagesArtificial intelligence researchers have developed severalspecialized programming languages for artificial intelligencewhich include IPL, Lisp, Prolog, STRIPS, Planner, POP-11 etc.
  12. 12. LISP (Introduction)Lisp is a family of computerprogramming languages with a longhistory and a distinctive, fullyparenthesized Polish prefixnotation.The name LISP derives from "ListProcessing". Linked lists are one ofLisp languages major datastructures, and Lisp source code isitself made up of lists. As a result,Lisp programs can manipulatesource code as a data structure,giving rise to the macro systemsthat allow programmers to createnew syntax or even new domain-specific languages embedded in
  13. 13. LISP (Syntax & Semantics) Lisp is an expression-oriented language. Unlike most other languages, no distinction is made between "expressions" and "statements"; all code and data are written as expressions. McCarthys 1958 paper introduced two types of syntax:  S-expressions (Symbolic expressions) (car (cons A B))  M-expressions (Meta Expressions) car[cons[A,B]]
  14. 14. LISP connection to A.I.  LISP is an important language for artificial Intelligence programming.  LISP programs define how to perform an algorithm on the expressions.  Frames, networks and objects are responsible for LISP’s popularity in the AI community.  Lisp is widely used in implementing the tools of Artificial Intelligence.
  15. 15. PROLOG (Introduction)Prolog is a general purpose logic programming languageassociated with AI and computational linguistics. Prolog has its roots in first-order and formal logic. Itis declarative and expressed in terms of relations,represented as facts and rules.
  16. 16. PROLOG (Syntax &Semantics)In Prolog, program logic is expressed in terms ofrelations, and a computation is initiated by running aquery over these relations.In syntax and semantics following are considered: Data types Rules and facts Evaluation Loops Negation
  17. 17. PROLOG (Data Types) An atom, whose meanings is not defined. Numbers can be floats or integers. Variables are strings consisting of letters, numbers and underscore characters, and beginning with an upper-case letter or underscore(_).
  18. 18. Comparison LISP PROLOGFunctional language Logical languageGeneral purpose Specific usesHandles wide variety of tasks, easier Smaller language, easier to learnto useDn’t support compared to prolog Supports multidirectional reasoning
  19. 19. Parent disciplines of AI:It is a broad field with so many subareas.
  20. 20. Applications of AI: Natural Language Understanding Expert Systems Planning and Robotics Machine Learning Game Playing
  21. 21. Natural Language Processing To design and build software that will analyze understand and generate languages that human use naturally.
  22. 22. Modes of communication Text based. Dialogue based.
  23. 23. Speech Recognition Process of converting sound signal captured by microphone or mobile/telephone to a set of words. 70-100 words / min with accuracy of 90%
  24. 24. Computer Vision Ability of a machine to extract information from an image that is necessary to solve a task Image Acquisition Image Processing Image Analysis Image understanding
  25. 25. Intelligent Robot Tend to mimic human sensing and decision making abilities so that they can adopt themselves to certain conditions and modify their actions.
  26. 26. Expert Systems These are Softwares used for decision making . Automated Reasoning and Theorem Proving. Troubleshooting Expert Systems. Stock Market Expert System.
  27. 27. Artificial Intelligence the need ofhour "Many thousands of AI applications are deeply embedded in the infrastructure of every industry." The late 90s and early 21st century, AI technology became widely used as elements of larger systems, but the field is rarely credited for these successes.
  28. 28. Fields of AI Computer science: Graphical User Interface Automatic Storage management Object Oriented Programming Data miming computer gaming Telecommunication: Automated Online Assistants Voice dialing Speech Recognization
  29. 29. Fields of AI Aviation & Automation: NASAs fight research centre Voice recognition in fighter jets Directions to A.I pilots through air traffic controllers Automatic Gearing System in Cars
  30. 30. Fields of AIRobotics: Assembling Robots Welding Robots Behavior based robotics Dancing Robots Robot navigation
  31. 31. Daily life applications Home Security  News and Bank publishing Post office  Financial trades Websites  Health and Digital cameras medicine  Games and toys
  32. 32. How AI is different????????Artificial Intelligence Natural IntelligenceNon Creative CreativePrecise May Contain ErrorConsistency Non ConsistentMultitasking Can’t Handle
  33. 33. Drawbacks of A.I Limited Ability Slow Real Time Response Can’t Handle Emergency Situation Difficult code High Cost
  34. 34. AnyQuestions
  35. 35. Thanks
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