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      A Quantum-inspired Evolutionary Algorithm with a competitive variation operator for Multiple-Fault Diagnosis

        , ,
      Applied Soft Computing
      Elsevier BV

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          Individual Comparisons by Ranking Methods

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            Rapid Solution of Problems by Quantum Computation

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              Is Open Access

              Quantum Mechanics helps in searching for a needle in a haystack

              Lov Grover (1997)
              Quantum mechanics can speed up a range of search applications over unsorted data. For example imagine a phone directory containing N names arranged in completely random order. To find someone's phone number with a probability of 50%, any classical algorithm (whether deterministic or probabilistic) will need to access the database a minimum of O(N) times. Quantum mechanical systems can be in a superposition of states and simultaneously examine multiple names. By properly adjusting the phases of various operations, successful computations reinforce each other while others interfere randomly. As a result, the desired phone number can be obtained in only O(sqrt(N)) accesses to the database.
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                Author and article information

                Journal
                Applied Soft Computing
                Applied Soft Computing
                Elsevier BV
                15684946
                December 2011
                December 2011
                : 11
                : 8
                : 4655-4666
                Article
                10.1016/j.asoc.2011.07.017
                65fd160f-4bbe-4730-8e62-c7dcaa52ce53
                © 2011

                http://www.elsevier.com/tdm/userlicense/1.0/

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