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### Pseudorandomness

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### Ackley Function

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Wikis

May 2, 2022 - Reading time: ~1 minute

There is no randomness on fundamental sciences like statics, physics, math etc. That sciences always searching for a reason. But we're need values which them looking like random in cryptography, tests, analysis, simulation etc. So, A pseudorandom sequence of numbers is one that appears to be statistically random, despite having been produced by a completely deterministic and repeatable process. In computer science we can describe it as a algorithm which is generating a **Pseudo random values**.

Wikis

April 29, 2022 - Reading time: 2 minutes

The Ackley function is widely used for testing optimization algorithms. In its two-dimensional form, as shown in the plot above, it is characterized by a nearly flat outer region, and a large hole at the centre. The function poses a risk for optimization algorithms, particularly hillclimbing algorithms, to be trapped in one of its many local minima.

Recommended variable values are: `a = 20, b = 0.2 and c = 2π`

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