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Control

2011

© BarabásiLab (Albert-László Barabási, Yang-Yu Liu, Mauro Martino)
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Controlling complex systems

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    x

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    power control

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    driver node

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    self-organized network

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Control | video commentary by Albert-László Barabási

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Control | video commentary Albert-László Barabási

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In »Control«, the BarabásiLab addresses the question of how complex, self-organized networks control themselves. Albert-László Barabási’s work assumes that the control of a system does not require authority over each individual element, but that a few elements—called driver nodes—can guide the dynamics of the whole system. In Barabási’s theory, each driver node controls a »cactus.« This term, borrowed from mathematics, denotes the connected sub-graph that represents the elementary units of control.

The visualizations in the light boxes show the field of cacti that determines the controllability of specific real networks, such as a network model or a communication or metabolic network. By depicting the forces necessary to control the respective networks, the hidden order behind controllability is made visible.

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