Network link prediction by global silencing of indirect correlations.
Network link prediction by global silencing of indirect correlations.
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DOI:
10.1038/nbt.2601
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发表时间:
2013-08
影响因子:
46.9
通讯作者:
中科院分区:
文献类型:
--
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Predicting physical and functional links between cellular components is a fundamental challenge of biology and network science. Yet, correlations, a ubiquitous input for biological link prediction, are affected by both direct and indirect effects, confounding our ability to identify true pairwise interactions. Here we exploit the fundamental properties of dynamical correlations in networks to develop a method to silence indirect effects. The method receives as input the observed correlations between node pairs and uses a matrix transformation to turn the correlation matrix into a highly discriminative silenced matrix, which enhances only the terms associated with direct causal links. Achieving perfect accuracy in model systems, we test the method against empirical data collected for the Escherichia coli regulatory interaction network, showing that it improves on the best preforming link prediction methods. Overall the silencing methodology helps translate the abundant correlation data into valuable local information, with applications ranging from link prediction to inferring the dynamical mechanisms governing biological networks.
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影响因子:
12.3
作者:
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DOI:
10.1016/j.physa.2004.05.018
发表时间:
2004-09-15
影响因子:
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作者:
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通讯作者:
Kauffman, S
DOI:
10.1073/pnas.0609152103
发表时间:
2006-12-12
影响因子:
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通讯作者:
Fedoroff, Nina V.