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1. What is Computation?
1. What is Computation?
Published: 2017/02/15
Channel: MIT OpenCourseWare
Computation -CXC/CSEC Maths Past Paper questions and solutions
Computation -CXC/CSEC Maths Past Paper questions and solutions
Published: 2011/09/27
Channel: Duet Lewis FLN
CXC CSEC Exam Questions - Computation Part 1 (includes multiple choice)
CXC CSEC Exam Questions - Computation Part 1 (includes multiple choice)
Published: 2014/11/09
Channel: CXC Math Mr Lennon
Lecture 2: What is Meant by Computation?
Lecture 2: What is Meant by Computation?
Published: 2012/08/08
Channel: Allen Institute
Computation of Income Tax by Vijay Adarsh | Stay Learning | (HINDI)
Computation of Income Tax by Vijay Adarsh | Stay Learning | (HINDI)
Published: 2016/12/27
Channel: StayLearning
Teaching Computation in Math : Math Tips & Calculations
Teaching Computation in Math : Math Tips & Calculations
Published: 2013/06/25
Channel: eHowEducation
TEDxCaltech - Tony Hey - Feynman and Computation
TEDxCaltech - Tony Hey - Feynman and Computation
Published: 2011/03/04
Channel: TEDx Talks
Dismantle - Computation
Dismantle - Computation
Published: 2011/09/12
Channel: SouthCoastVibes
Computation of Income - How to Prepare | आयकर संगणना चार्ट कैसे बनाएँ
Computation of Income - How to Prepare | आयकर संगणना चार्ट कैसे बनाएँ
Published: 2016/12/24
Channel: Dr. Pawan Jaiswal
Theory Of Computation 61 -- Examples of Regular expressions
Theory Of Computation 61 -- Examples of Regular expressions
Published: 2014/06/28
Channel: Gate Lectures by Ravindrababu Ravula
What is Computation -- Dr. Leslie Lamport, Microsoft
What is Computation -- Dr. Leslie Lamport, Microsoft
Published: 2011/06/12
Channel: Technion
Computation of Total Income by prof. Harish Ojha
Computation of Total Income by prof. Harish Ojha
Published: 2017/01/23
Channel: CA kart
Theory Of Computation 1,Introduction to TOC and DFA
Theory Of Computation 1,Introduction to TOC and DFA
Published: 2014/05/21
Channel: Gate Lectures by Ravindrababu Ravula
13th Month Pay: Computation and Spending
13th Month Pay: Computation and Spending
Published: 2014/12/11
Channel: UNTV News and Rescue
2. Models of Computation, Document Distance
2. Models of Computation, Document Distance
Published: 2013/01/14
Channel: MIT OpenCourseWare
SSS Retirement Benefit / Pension Computation I Public Service
SSS Retirement Benefit / Pension Computation I Public Service
Published: 2017/02/10
Channel: BuzzScoopBlog
Decidable | Undecidable | Complexity Theory | NP Completeness | TOC | THEORY OF COMPUTATION | part-3
Decidable | Undecidable | Complexity Theory | NP Completeness | TOC | THEORY OF COMPUTATION | part-3
Published: 2016/12/07
Channel: KNOWLEDGE GATE
DILEMMACHINE - Snake Eyes (Computation Remix)
DILEMMACHINE - Snake Eyes (Computation Remix)
Published: 2013/03/22
Channel: Computation
SSS Monthly Pension Computation
SSS Monthly Pension Computation
Published: 2015/03/04
Channel: zulu zulu
Theory Of Computation lecture 65
Theory Of Computation lecture 65
Published: 2014/07/18
Channel: Gate Lectures by Ravindrababu Ravula
Theory Of Computation 60
Theory Of Computation 60
Published: 2013/07/25
Channel: Gate Lectures by Ravindrababu Ravula
Evolutionary computation: Keith Downing at TEDxTrondheim
Evolutionary computation: Keith Downing at TEDxTrondheim
Published: 2013/11/04
Channel: TEDx Talks
Math Computation
Math Computation
Published: 2013/11/06
Channel: Michael Ivey
Lisp at the Frontier of Computation, by Robert Smith at Rigetti Computing
Lisp at the Frontier of Computation, by Robert Smith at Rigetti Computing
Published: 2017/12/08
Channel: Arthur Gleckler
Theory Of Computation 2, Construction of minimal DFA and problems
Theory Of Computation 2, Construction of minimal DFA and problems
Published: 2013/07/19
Channel: Gate Lectures by Ravindrababu Ravula
Quantum Computation for Quantum Chemistry: Status, Challenges, and Prospects - Session 1
Quantum Computation for Quantum Chemistry: Status, Challenges, and Prospects - Session 1
Published: 2016/07/28
Channel: Microsoft Research
Lec-1 Errors in Computation and Numerical Instability
Lec-1 Errors in Computation and Numerical Instability
Published: 2010/10/18
Channel: nptelhrd
How to compute income tax using BIR
How to compute income tax using BIR's Tax Table
Published: 2015/05/14
Channel: AnsweringHowTo.com
28c3: The coming war on general computation
28c3: The coming war on general computation
Published: 2011/12/28
Channel: 28c3
Theory Of Computation lecture 68
Theory Of Computation lecture 68
Published: 2014/07/21
Channel: Gate Lectures by Ravindrababu Ravula
Computation and the Future of Mathematics
Computation and the Future of Mathematics
Published: 2013/01/25
Channel: University of Oxford
Introduction to Theory of Computation
Introduction to Theory of Computation
Published: 2016/12/15
Channel: Neso Academy
Theory Of Computation 33,Introduction to NFA
Theory Of Computation 33,Introduction to NFA
Published: 2013/07/23
Channel: Gate Lectures by Ravindrababu Ravula
Multi-Party Computation: From Theory to Practice
Multi-Party Computation: From Theory to Practice
Published: 2013/01/10
Channel: GoogleTechTalks
Q&A Series: How to Compute for your Maternity Benefit
Q&A Series: How to Compute for your Maternity Benefit
Published: 2013/01/11
Channel: Philippine Social Security System
Mod-01 Lec-01 What is theory of computation?
Mod-01 Lec-01 What is theory of computation?
Published: 2014/06/27
Channel: nptelhrd
Theory Of Computation lecture 67
Theory Of Computation lecture 67
Published: 2014/07/21
Channel: Gate Lectures by Ravindrababu Ravula
Achim Menges: Rethinking Materiality Through Computation in Architecture
Achim Menges: Rethinking Materiality Through Computation in Architecture
Published: 2014/04/10
Channel: Stockholms Arkitektförening / The Stockholm Association of Architects
Theory of Computation: What is Theory of Computation
Theory of Computation: What is Theory of Computation
Published: 2011/08/31
Channel: vkedco
Theory Of Computation 4, DFA and problem
Theory Of Computation 4, DFA and problem
Published: 2014/05/08
Channel: Gate Lectures by Ravindrababu Ravula
Designing PDA | Pushdown Automata | Theory of Computation(TOC)
Designing PDA | Pushdown Automata | Theory of Computation(TOC)
Published: 2016/12/17
Channel: Last Minute Tutorials
Theory Of Computation 6, DFA construction of binary no which is divisible by 2 and number system
Theory Of Computation 6, DFA construction of binary no which is divisible by 2 and number system
Published: 2013/07/19
Channel: Gate Lectures by Ravindrababu Ravula
Secure Computation - Applied Cryptography
Secure Computation - Applied Cryptography
Published: 2015/02/23
Channel: Udacity
23. Computational Complexity
23. Computational Complexity
Published: 2013/01/14
Channel: MIT OpenCourseWare
Step-by-Step Computation of BMI : Exercising at the Gym
Step-by-Step Computation of BMI : Exercising at the Gym
Published: 2012/08/20
Channel: ehowhealth
Beyond Computation: The P vs NP Problem - Michael Sipser
Beyond Computation: The P vs NP Problem - Michael Sipser
Published: 2011/11/23
Channel: PoincareDuality
Studying Adaptive Architecture and Computation at The Bartlett
Studying Adaptive Architecture and Computation at The Bartlett
Published: 2014/01/21
Channel: The Bartlett, UCL Faculty of the Built Environment
7. Capital Gains Computation
7. Capital Gains Computation
Published: 2012/10/07
Channel: corporateeducation
Secure Multiparty Computation I
Secure Multiparty Computation I
Published: 2015/05/28
Channel: Simons Institute
Theory Of Computation 5,DFA construction
Theory Of Computation 5,DFA construction
Published: 2014/05/08
Channel: Gate Lectures by Ravindrababu Ravula
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WIKIPEDIA ARTICLE

From Wikipedia, the free encyclopedia
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Computation is any type of calculation[1][2] that includes both arithmetical and non-arithmetical steps and follows a well-defined model understood and described as, for example, an algorithm.

The study of computation is paramount to the discipline of computer science.

Physical phenomenon[edit]

A computation can be seen as a purely physical phenomenon occurring inside a closed physical system called a computer. Examples of such physical systems include digital computers, mechanical computers, quantum computers, DNA computers, molecular computers, microfluidics-based computers, analog computers or wetware computers. This point of view is the one adopted by the branch of theoretical physics called the physics of computation as well as the field of natural computing.

An even more radical point of view is the postulate of digital physics that the evolution of the universe itself is a computation - pancomputationalism.

Accounts of computation[edit]

The mapping account[edit]

A classic account of computation is found throughout the works of Hilary Putnam and others. Peter Godfrey-Smith has dubbed this the “simple mapping account.”[3] Gualtiero Piccinini's summary of this account states that a physical system can be said to perform a specific computation when there is a mapping between the state of that system to the computation such that the “microphysical states [of the system] mirror the state transitions between the computational states.”[4]

The semantic account[edit]

Philosophers such as Jerry Fodor[5] have suggested various accounts of computation with the restriction that semantic content is a necessary condition for computation (that is, that what differentiates an arbitrary physical system from a computing system is that the operands of the computation represent something). This notion attempts to prevent the logical abstraction of the mapping account of pancomputationalism, or the idea that everything can be said to be computing everything.

The mechanistic account[edit]

Gualtiero Piccinini proposes an account of computation based in mechanical philosophy. It states that physical computing systems are types of mechanisms that, by design, perform physical computation, or “the manipulation (by a functional mechanism) of a medium-independent vehicle according to a rule.” Medium-independence allows for the use of physical variables with traits other than voltage (as in typical digital computers); this is imperative in considering other types of computation, such as that occurs in the brain or in a quantum computer. A rule, in this sense, provides a mapping among inputs, outputs, and internal states of the physical computing system. [6]

Mathematical models[edit]

In the theory of computation, a diversity of mathematical models of computers has been developed. Typical mathematical models of computers are the following:

Giunti (1997[7], ch. 1) calls the models studied by computation theory computational systems and he argues that all of them are mathematical dynamical systems with discrete time and discrete state space. Giunti (2017[8], pp. 179-80) maintains that a computational system is a complex object which consists of three parts. First, a mathematical dynamical systems DS with discrete time and discrete state space; second, a computational setup H = (F, BF), which is made up of a theoretical part F, and a real part BF; third, an interpretation IDS, H, which links the dynamical system DS with the setup H.

See also[edit]

References[edit]

  1. ^ Computation from the Free Merriam-Webster Dictionary
  2. ^ "Computation: Definition and Synonyms from Answers.com". Answers.com. Archived from the original on 22 February 2009. Retrieved 26 April 2017. 
  3. ^ Godfrey-Smith, P. (2009), "Triviality Arguments against Functionalism", Philosophical Studies, 145 (2): 273–95, doi:10.1007/s11098-008-9231-3 
  4. ^ Piccinini, Gualtiero (2015). Physical Computation: A Mechanistic Account. Oxford: Oxford University Press. p. 17. ISBN 9780199658855. 
  5. ^ Fodor, J. A. (1981), "The Mind-Body Problem", Scientific American, 244 (January 1981) 
  6. ^ Piccinini, Gualtiero (2015). Physical Computation: A Mechanistic Account. Oxford: Oxford University Press. p. 10. ISBN 9780199658855. 
  7. ^ Giunti, Marco (1997). Computation, Dynamics, and Cognition. New York: Oxford University Press. ISBN 978-0-19-509009-3. 
  8. ^ Giunti, Marco (2017), "What is a Physical Realization of a Computational System?", Isonomia -- Epistemologica, 9: 177–92, ISSN 2037-4348 

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