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67:. It was proposed by David Ackley in his 1987 PhD dissertation. The function is commonly used as a minimization function with global minimum value 0 at 0,.., 0 in the form due to Thomas Bäck. While Ackley gives the function as an example of "fine-textured broadly unimodal space" his thesis does not actually use the function as a test.
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267:{\displaystyle {\begin{aligned}f(x,y)=-20&{}\exp \left\\&{}-\exp \left+e+20\end{aligned}}}
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Function used as a performance test problem for optimization algorithms
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Bäck, Thomas (1996-02-15). "Artificial
Landscapes".
352:", Kluwer Academic Publishers, Boston MA. p. 13-14
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350:A connectionist machine for genetic hillclimbing
364:Evolutionary Algorithms in Theory and Practice
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70:On a 2-dimensional domain it is defined by:
44:Contour surfaces of Ackley's function in 3D
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63:used as a performance test problem for
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314:{\displaystyle f(0,0)=0.}
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348:Ackley, D. H. (1987) "
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59:is a non-
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325:See also
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55:, the
337:Notes
376:ISBN
368:doi
224:cos
206:cos
198:0.5
187:exp
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130:0.2
116:exp
51:In
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309:0.
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