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2013 ; 14 Suppl 19
(Suppl 19
): S2
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iVUN: interactive Visualization of Uncertain biochemical reaction Networks
#MMPMID24564335
Vehlow C
; Hasenauer J
; Kramer A
; Raue A
; Hug S
; Timmer J
; Radde N
; Theis FJ
; Weiskopf D
BMC Bioinformatics
2013[]; 14 Suppl 19
(Suppl 19
): S2
PMID24564335
show ga
BACKGROUND: Mathematical models are nowadays widely used to describe biochemical
reaction networks. One of the main reasons for this is that models facilitate the
integration of a multitude of different data and data types using parameter
estimation. Thereby, models allow for a holistic understanding of biological
processes. However, due to measurement noise and the limited amount of data,
uncertainties in the model parameters should be considered when conclusions are
drawn from estimated model attributes, such as reaction fluxes or transient
dynamics of biological species. METHODS AND RESULTS: We developed the visual
analytics system iVUN that supports uncertainty-aware analysis of static and
dynamic attributes of biochemical reaction networks modeled by ordinary
differential equations. The multivariate graph of the network is visualized as a
node-link diagram, and statistics of the attributes are mapped to the color of
nodes and links of the graph. In addition, the graph view is linked with several
views, such as line plots, scatter plots, and correlation matrices, to support
locating uncertainties and the analysis of their time dependencies. As
demonstration, we use iVUN to quantitatively analyze the dynamics of a model for
Epo-induced JAK2/STAT5 signaling. CONCLUSION: Our case study showed that iVUN can
be used to perform an in-depth study of biochemical reaction networks, including
attribute uncertainties, correlations between these attributes and their
uncertainties as well as the attribute dynamics. In particular, the linking of
different visualization options turned out to be highly beneficial for the
complex analysis tasks that come with the biological systems as presented here.