 | Terence C. Fogarty - Computers - 1996 - 324 pages
...step sizes Two approaches have been taken to this problem :1/5 success rule - Rechenberg postulated that the ratio of successful mutations to all mutations should be 1/5 : if greater than this fraction, the variance should be increased. However this method can only be... | |
 | Witold Pedrycz - Computers - 1997 - 298 pages
...upon a success level achieved in the previous "p" generations. The 1/5 success rule (Rechenberg, 1973) states that the ratio of successful mutations to all mutations should be 1/5. If the value of this ratio is higher than 1/5 increase a, otherwise reduce it. The rationale behind... | |
 | Mitsuo Gen, Runwei Cheng - Technology & Engineering - 1999 - 520 pages
...Rechenberg's 3- success rule in evolution strategies, which was used to vary the step size of mutation [530]. The rule states that the ratio of successful mutations to all mutations should be j; hence, if the ratio is greater than j, the step size should be increased. and if the ratio is less... | |
 | D. Dumitrescu, Beatrice Lazzerini, Lakhmi C. Jain, A. Dumitrescu - Computers - 2000 - 424 pages
...rule Rechenberg's '1/5 success rule' incorporates feedback from the search process. The 1/5 success rule states that • The ratio of successful mutations to all mutations should be 1/5. • If this ratio is greater than 1/5, then the standard deviation should be increased. • If the... | |
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This rule states that the ratio of successful mutations to all mutations should be 1/5, hence if the ratio is greater than 1/5 then increase the step size, and if the ratio is less than 1/5 then decrease the step size. 