Adaptive Lévy walks can outperform composite Brownian walks in non-destructive random searching scenarios
Adaptive Lévy walks can outperform composite Brownian walks in non-destructive random searching scenarios
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在非破坏性随机搜索场景中,自适应 Lévy 游走的性能优于复合布朗游走
DOI:
10.1016/j.physa.2008.11.007
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发表时间:
2009
期刊:
影响因子:
--
通讯作者:
Reynolds A
中科院分区:
文献类型:
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作者:
Reynolds A
Recently it has been found that composite Brownian walk searches are more efficient than any Lévy walk when searching is non-destructive and when the Lévy walks are not responsive to conditions found in the search. Here a new class of adaptive Lévy walk searches is presented that encompasses composite Brownian walks as a special case. In these new models, bouts of Lévy walk searching alternate with bouts of more intensive Brownian walk searching. Switching from extensive to intensive searching is prompted by the detection of a target. And here, switching back to extensive searching arises if a target is not located after travelling a distance equal to the ‘giving-up distance’. It is found that adaptive Lévy walks outperform composite Brownian walks when searching for sparsely distributed resources. Consequently there is stronger selection pressures for Lévy processes when resources are sparsely distributed within unpredictable environments. The findings reconcile Lévy walk search theory with the ubiquity of two modes of searching by predators and with their switching search mode immediately after finding a prey.
DOI:
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发表时间:
1985
期刊:
影响因子:
--
作者:
P. Knoppien;J. Reddingius
通讯作者:
J. Reddingius
影响因子:
4.8
作者:
A. Reynolds
通讯作者:
A. Reynolds
DOI:
--
发表时间:
1988
期刊:
影响因子:
--
作者:
G. Ernsting;D. Werf
通讯作者:
D. Werf