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2017 ; 7
(1
): 5221
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A Robust Method for Inferring Network Structures
#MMPMID28701799
Yang Y
; Luo T
; Li Z
; Zhang X
; Yu PS
Sci Rep
2017[Jul]; 7
(1
): 5221
PMID28701799
show ga
Inferring the network structure from limited observable data is significant in
molecular biology, communication and many other areas. It is challenging,
primarily because the observable data are sparse, finite and noisy. The
development of machine learning and network structure study provides a great
chance to solve the problem. In this paper, we propose an iterative smoothing
algorithm with structure sparsity (ISSS) method. The elastic penalty in the model
is introduced for the sparse solution, identifying group features and avoiding
over-fitting, and the total variation (TV) penalty in the model can effectively
utilize the structure information to identify the neighborhood of the vertices.
Due to the non-smoothness of the elastic and structural TV penalties, an
efficient algorithm with the Nesterov's smoothing optimization technique is
proposed to solve the non-smooth problem. The experimental results on both
synthetic and real-world networks show that the proposed model is robust against
insufficient data and high noise. In addition, we investigate many factors that
play important roles in identifying the performance of ISSS.