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- W2914776719 abstract "We consider perturbation-based extremum seeking, which recovers an approximate gradient of an analytically unknown objective function through measurements. Using classical needle variation analysis, we are able to explicitly quantify the recovered gradient in the scalar case. We reveal that it corresponds to an averaged gradient of the objective function, even for very general extremum seeking systems. From this, we create a recursion which represents the learning dynamics along the recovered gradient. These results give rise to the interpretation that extremum seeking actually optimizes a function other than the original one. From this insight, a new perspective on global optimization of functions with local extrema emerges: because the gradient is averaged over a certain time period, local extrema might be evened out in the learning dynamics." @default.
- W2914776719 created "2019-02-21" @default.
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- W2914776719 date "2018-12-01" @default.
- W2914776719 modified "2023-09-26" @default.
- W2914776719 title "Characterizing the learning dynamics in extremum seeking: The role of gradient averaging and non-convexity" @default.
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- W2914776719 doi "https://doi.org/10.1109/cdc.2018.8619442" @default.
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