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15 de may. de 2011 · Towards this goal, we compared accuracy of six different ML algorithms applied to neuroimaging data of persons engaged in a bivariate task, asserting their belief or disbelief of a variety of propositional statements.
15 de may. de 2011 · We apply pattern classifiers towards decoding belief cognitive states from fMRI. Independent Component (IC) Analysis was used for dimension reduction. Six ICs formed a diagnostic, parsimonious feature subset. Informative IC spatial masks were mapped forward. Classification accuracy of belief vs. disbelief was robust and varied by algorithm.
5 de may. de 2011 · We evaluated six machine learning algorithms over a range of complexity, each of which was implemented and automated using Perl, WEKA (University of Waikato, New Zealand), and MATLAB (v.7.6, Mathworks, Inc.) software. We describe each of these briefly here.
10 de nov. de 2010 · We performed unsupervised dimension reduction and automated feature extraction using independent component (IC) analysis and extracted IC time courses. Optimization of classification hyperparameters across each classifier occurred prior to assessment.
15 de may. de 2011 · Towards this goal, we compared accuracy of six different ML algorithms applied to neuroimaging data of persons engaged in a bivariate task, asserting their belief or disbelief of a variety of propositional statements. We performed unsupervised dimension reduction and automated feature extraction using independent component (IC) analysis and ...
1 de nov. de 2010 · Three Machine Learning algorithms: Random Forest (RF), Support Vector Machine (SVM) and Naïve Bayes Classifier (NBC) and two resample methods: under and over-sampling, were tested.
Whereas fMRI has been widely used to determine average activation in different brain regions, our problem of automatically decoding instantaneous cognitive states has received little attention. This problem is relevant to diagnosing cognitive processes in neurologically normal and abnormal subjects.
