Automatic Cognitive Load Classification Using High-Frequency Interaction Events

Autor: Ningjiu Tang, Zhiming Wu, Xiao Li, Tao Lin
Rok vydání: 2013
Předmět:
Zdroj: International Journal of Technology and Human Interaction. 9:73-88
ISSN: 1548-3916
1548-3908
DOI: 10.4018/jthi.2013070106
Popis: There is still a challenge of creating an evaluation method which can not only unobtrusively collect data without supplement equipment but also objectively, quantitatively and in real-time evaluate cognitive load of user based the data. The study explores the possibility of using the features extracted from high-frequency interaction events to evaluate cognitive load to respond to the challenge. Specifically, back-propagation neural networks, along with two feature selection methods (nBset and SFS), were used as the classifier and it was able to use a set of features to differentiate three cognitive load levels with an accuracy of 74.27%. The main contributions of the research are: (1) demonstrating the use of combining machine learning techniques and the HFI features in automatically evaluating cognitive load; (2) showing the potential of using the HFI features in discriminating different cognitive load when suitable classifier and features are adopted.
Databáze: OpenAIRE