Title
Identifiability of dynamical networks with partial node measurements.
Abstract
Much recent research has dealt with the identifiability of a dynamical network in which the node signals are connected by causal linear transfer functions and are excited by known external excitation signals and/or unknown noise signals. A major research question concerns the identifiability of the whole network—topology and all transfer functions—from the measured node signals and external excitation signals. So far all results on the identifiability of the whole network have assumed that all node signals are measured. This paper presents the first results for the situation where not all node signals are measurable, under the assumptions that, first, the topology of the network is known, and, second, each node is excited by a known external excitation. Using graph theoretical properties, we show that the transfer functions that can be identified depend essentially on the topology of the paths linking the corresponding vertices to the measured nodes. A practical outcome is that, under those assumptions, a network can often be identified using only a small subset of node measurements.
Year
DOI
Venue
2018
10.1109/tac.2018.2867336
IEEE Transactions on Automatic Control
Keywords
Field
DocType
Transfer functions,Network topology,Topology,Knowledge engineering,Computational complexity,Standards,Mathematical model
Excited state,Discrete mathematics,Graph,Topology,Vertex (geometry),Measure (mathematics),Identifiability,Excitation,Transfer function,Mathematics
Journal
Volume
Issue
ISSN
abs/1803.05885
6
0018-9286
Citations 
PageRank 
References 
1
0.35
2
Authors
3
Name
Order
Citations
PageRank
Julien M. Hendrickx177277.11
Michel Gevers2506106.82
Alexandre S. Bazanella3347.63