Algorithm
hideIn mathematics, computing, linguistics, and related subjects, an algorithm is a finite sequence of instructions, an explicit, step-by-step procedure for solving a problem, often used for calculation and data processing. It is formally a type of effective method in which a list of well-defined instructions for completing a task, will when given an initial state, proceed through a well-defined series of successive states, eventually terminating in an end-state. The transition from one state to the next is not necessarily deterministic; some algorithms, known as probabilistic algorithms, incorporate randomness.
A partial formalization of the concept began with attempts to solve the Entscheidungsproblem (the "decision problem") posed by David Hilbert in 1928. Subsequent formalizations were framed as attempts to define "effective calculability" (Kleene 1943:274) or "effective method" (Rosser 1939:225); those formalizations included the Gödel-Herbrand-Kleene recursive functions of 1930, 1934 and 1935, Alonzo Church's lambda calculus of 1936, Emil Post's "Formulation 1" of 1936, and Alan Turing's Turing machines of 1936–7 and 1939.
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News tagged with algorithm
Researchers develop virtual streams to help restore real ones
Nov 24, 2009 |
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Researchers at the University of Minnesota have developed a unique new computer model called the Virtual StreamLab, designed to help restore real streams to a healthier state. The Virtual StreamLab, which demonstrates the ...
Visual assistance for cosmic blind spots
Nov 23, 2009 |
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A bit of imagination on the part of a measuring instrument wouldn't be a bad thing. It could help to add data from areas where the instrument is unable to measure. However, it must do so constructively. In ...
Technique finds gene regulatory sites without knowledge of regulators
Nov 19, 2009 |
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A new statistical technique developed by researchers at the University of Illinois allows scientists to scan a genome for specific gene-regulatory regions without requiring prior knowledge of the relevant transcription factors. ...
Researchers patent enabling technology for spread-spectrum systems
Nov 17, 2009 |
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If you've ever gotten the dreaded "network busy" message while trying to make a cell phone call, you've experienced the complication of sharing a single network with numerous other users.
There's no business like Grid business (w/ Video)
Technology / Computer Sciences
Nov 17, 2009 |
3 / 5 (1) |
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(PhysOrg.com) -- Scientists have embraced the Grid, but businesses have held back, concerned about complexity and security. Now a European research team has built a platform opening the Grid's vast resources ...
NASA 'Drops' Next Generation Robotic Lander During Autonomous Tests
Space & Earth / Space Exploration
Nov 16, 2009 |
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(PhysOrg.com) -- NASA has successfully completed a series of autonomous "drop" tests of a robotic lander test article - in a record 10 months - to demonstrate the ability to perform a controlled landing on ...
Analyzing structural brain changes in Alzheimer's disease
Nov 16, 2009 |
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In a study that promises to improve diagnosis and monitoring of Alzheimer's disease, scientists at the University of California, San Diego have developed a fast and accurate method for quantifying subtle, ...
Solving big problems with new quantum algorithm
Nov 09, 2009 |
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(PhysOrg.com) -- In a recently published paper, Aram Harrow at the University of Bristol and colleagues from MIT in the United States have discovered a quantum algorithm that solves large problems much faster ...
Deepening the search for clues to rheumatoid arthritis
Nov 09, 2009 |
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(PhysOrg.com) -- The gnawing pain of rheumatoid arthritis is a signal that the body’s immune system has hit the wrong target: its own cartilage and bone.
A new computer simulator allows to design military strategies based on ants' movements
Technology / Computer Sciences
Nov 06, 2009 |
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A researcher of the University of Granada, Spain, has designed a new system for the mobility of military troops within a battlefield based on the mechanisms used by ant colonies to move using a commercial ...
Spacesuits with artificial intelligence may look for life on Mars
Space & Earth / Space Exploration
Nov 04, 2009 |
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(PhysOrg.com) -- Astronauts may in future be wearing spacesuits equipped with artificial intelligence (AI) and digital eyes, turning them into what the researchers call cyborg astrobiologists.
NIST test proves 'the eyes have it' for ID verification
Technology / Computer Sciences
Nov 04, 2009 |
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The eyes may be the mirror to the soul, but the iris reveals a person's true identity—its intricate structure constitutes a powerful biometric. A new report by computer scientists at the National Institute ...
Web site help for students applying to college
Nov 03, 2009 |
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Two of my best friends are named Pete. We went to the same high school and the same university, Cal State Fullerton, which has been described as "the Harvard of north Orange County" -- by me, at least.
Microsoft Researchers Developing Muscle-Based PC Interface (w/ Video)
Technology / Computer Sciences
Oct 30, 2009 |
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(PhysOrg.com) -- Microsoft researches have teamed up with the University of Washington and the University of Toronto to develop a muscle-controlled interface that allows for hands-free, gesture-driven interaction ...
P vs. NP -- The most notorious problem in theoretical computer science remains open
Technology / Computer Sciences
Oct 29, 2009 |
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In the 1995 Halloween episode of The Simpsons, Homer Simpson finds a portal to the mysterious Third Dimension behind a bookcase, and desperate to escape his in-laws, he plunges through. He finds himself wander ...
