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Conference papers
Nonnegative matrix factorization to find features in temporal networks
Abstract : Temporal networks describe a large variety of systems having a temporal evolution. Characterization and visualization of their evolution are often an issue especially when the amount of data becomes huge. We propose here an approach based on the duality between graphs and signals. Temporal networks are represented at each time instant by a collection of signals, whose spectral analysis reveals connection between frequency features and structure of the network. We use nonnegative matrix factorization (NMF) to find these frequency features and track them along time. Transforming back these features into subgraphs reveals the underlying structures which form a decomposition of the temporal network.
Cited literature [17 references]
https://hal-ens-lyon.archives-ouvertes.fr/ensl-00989760
Contributor : Ronan Hamon Connect in order to contact the contributor
Submitted on : Monday, May 12, 2014 - 1:56:31 PM
Last modification on : Tuesday, June 1, 2021 - 2:08:09 PM
Long-term archiving on: : Tuesday, August 12, 2014 - 11:45:12 AM
Contributor : Ronan Hamon Connect in order to contact the contributor
Submitted on : Monday, May 12, 2014 - 1:56:31 PM
Last modification on : Tuesday, June 1, 2021 - 2:08:09 PM
Long-term archiving on: : Tuesday, August 12, 2014 - 11:45:12 AM
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abstract_icassp14.pdf
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