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Construction of Sparse Weighted Directed Network (SWDN) from the Multivariate Time-Series

  • Rahilsadat Hosseini
  • Feng Liu
  • Shouyi Wang
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 11309)

Abstract

There are many studies focusing on network detection in multivariate (MV) time-series data. A great deal of focus have been on estimation of brain networks using functional Magnetic Resonance Imaging (fMRI), functional Near-Infrared Spectroscopy (fNIRS) and electroencephalogram (EEG). We present a sparse weighted directed network (SWDN) estimation approach which can detect the underlying minimum spanning network with maximum likelihood and estimated weights based on linear Gaussian conditional relationship in the MV time-series. Considering the brain neuro-imaging signals as the multivariate data, we evaluated the performance of the proposed approach using the publicly available fMRI data-set and the results of the similar study which had evaluated popular network estimation approaches on the simulated fMRI data.

Keywords

Multivariate time-series Sparse weighted directed network (SWDN) fMRI 

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Copyright information

© Springer Nature Switzerland AG 2018

Authors and Affiliations

  1. 1.University of Texas at ArlingtonArlingtonUSA

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