Skip to main content

Data stream synchronisation for defining meaningful fMRI classification problems.

Budka, M., 2014. Data stream synchronisation for defining meaningful fMRI classification problems. Applied Soft Computing, 24, 212-221.

This is the latest version of this eprint.

Full text available as:

1-s2.0-S156849461400341X-main.pdf - Published Version
Available under License Creative Commons Attribution Non-commercial No Derivatives.


DOI: 10.1016/j.asoc.2014.07.011


Application of machine learning techniques to the functional Magnetic Resonance Imaging (fMRI) data is recently an active field of research. There is however one area which does not receive due attention in the literature – preparation of the fMRI data for subsequent modelling. In this study we focus on the issue of synchronization of the stream of fMRI snapshots with the mental states of the subject, which is a form of smart filtering of the in- put data, performed prior to building a predictive model. We demonstrate, investigate and thoroughly discuss the negative effects of lack of alignment between the two streams and propose an original data-driven approach to efficiently address this problem. Our solution involves casting the issue as a constrained optimization problem in combination with an alternative classification accuracy assessment scheme, applicable to both batch and on-line scenarios and able to capture information distributed across a number of input samples lifting the common simplifying i.i.d. assumption. The proposed method is tested using real fMRI data and experimentally compared to the state-of-the-art ensemble models reported in the literature, outperforming them by a wide margin.

Item Type:Article
Uncontrolled Keywords: Pattern recognition; Machine learning; Classification; fMRI; Data stream synchronization; Smart filtering
Group:Faculty of Science & Technology
ID Code:22862
Deposited By: Symplectic RT2
Deposited On:09 Nov 2015 11:55
Last Modified:14 Mar 2022 13:54

Available Versions of this Item


Downloads per month over past year

More statistics for this item...
Repository Staff Only -