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Nested Canalyzing Depth And Network Stability, Lori Layne, Elena Dimitrova, Matthew Macauley
Nested Canalyzing Depth And Network Stability, Lori Layne, Elena Dimitrova, Matthew Macauley
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We introduce the nested canalyzing depth of a function, which measures the extent to which it retains a nested canalyzing structure. We characterize the structure of functions with a given depth and compute the expected activities and sensitivities of the variables. This analysis quantifies how canalyzation leads to higher stability in Boolean networks. It generalizes the notion of nested canalyzing functions (NCFs), which are precisely the functions with maximum depth. NCFs have been proposed as gene regulatory network models, but their structure is frequently too restrictive and they are extremely sparse. We find that functions become decreasingly sensitive to input …