Numerical stability

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High Quality Content by WIKIPEDIA articles! In the mathematical subfield of numerical analysis, numerical stability is a desirable property of numerical algorithms. The precise definition of stability depends on the context, but it is related to the accuracy of the algorithm. A related phenomenon is instability. Typically, algorithms would approach the right solution in the limit, if there were no round-off or truncation errors, but depending on the specific computational method small errors can be magnified, instead of damped, leading to large errors. Sometimes a single calculation can be achieved in several ways, all of which are algebraically equivalent in terms of ideal real or complex numbers, but in practice when performed on digital computers yield different results. Some calculations might damp out approximation errors that occur; others might magnify such errors. Calculations that can be proven not to magnify approximation errors are called numerically stable. One of the common tasks of numerical analysis is to try to select algorithms which are robust that is to say, have good numerical stability among other desirable properties.

Weitere Informationen

  • Allgemeine Informationen
    • GTIN 09786130336264
    • Editor Lambert M. Surhone, Miriam T. Timpledon, Susan F. Marseken
    • Sprache Englisch
    • Größe H220mm x B150mm x T8mm
    • Jahr 2010
    • EAN 9786130336264
    • Format Fachbuch
    • ISBN 978-613-0-33626-4
    • Titel Numerical stability
    • Untertitel Mathematics, Numerical Analysis, Algorithm, Numerical Linear Algebra, Function, Round-off Error, Truncation Error, Data Error
    • Gewicht 219g
    • Herausgeber Betascript Publishers
    • Anzahl Seiten 136
    • Genre Mathematik

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