Harmony Search

In computer science and operations research, harmony search (HS) is a phenomenon-mimicking algorithm (also known as metaheuristic algorithm, soft computing algorithm or evolutionary algorithm) inspired by the improvisation process of musicians. In the HS algorithm, each musician (= decision variable) plays (= generates) a note (= a value) for finding a best harmony (= global optimum) all together. The Harmony Search algorithm has the following merits:

  • HS does not require differential gradients, thus it can consider discontinuous functions as well as continuous functions.
  • HS can handle discrete variables as well as continuous variables.
  • HS does not require initial value setting for the variables.
  • HS is free from divergence.
  • HS may escape local optima.
  • HS may overcome the drawback of GA's building block theory which works well only if the relationship among variables in a chromosome is carefully considered. If neighbor variables in a chromosome have weaker relationship than remote variables, building block theory may not work well because of crossover operation. However, HS explicitly considers the relationship using ensemble operation.
  • HS has a novel stochastic derivative applied to discrete variables, which uses musician's experiences as a searching direction.
  • Certain HS variants do not require algorithm parameters such as HMCR and PAR, thus novice users can easily use the algorithm.

Read more about Harmony SearchBasic Harmony Search Algorithm, Other Related Algorithms

Other articles related to "harmony search":

Harmony Search - Other Related Algorithms
... Harmony search lies in the fields of Evolutionary computing Metaheuristics Stochastic optimization Optimization Other evolutionary computing methods include Evolutionary algorithms, including Genetic ...

Famous quotes containing the words search and/or harmony:

    A way of certifying experience, taking photographs is also a way of refusing it—by limiting experience to a search for the photogenic, by converting experience into an image, a souvenir. Travel becomes a strategy for accumulating photographs.
    Susan Sontag (b. 1933)

    To place oneself in the position of God is painful: being God is equivalent to being tortured. For being God means that one is in harmony with all that is, including the worst. The existence of the worst evils is unimaginable unless God willed them.
    Georges Bataille (1897–1962)