Machine Learning for Cognitive Load Classification – A Case Study on Contact-Free Approach - Inria - Institut national de recherche en sciences et technologies du numérique Accéder directement au contenu
Communication Dans Un Congrès Année : 2020

Machine Learning for Cognitive Load Classification – A Case Study on Contact-Free Approach

Mobyen Uddin Ahmed
  • Fonction : Auteur
  • PersonId : 1242573
Shahina Begum
  • Fonction : Auteur
  • PersonId : 1242574
Hamidur Rahman
  • Fonction : Auteur
  • PersonId : 1242575

Résumé

The most common ways of measuring Cognitive Load (CL) is using physiological sensor signals e.g., Electroencephalography (EEG), or Electrocardiogram (ECG). However, these signals are problematic in situations e.g., in dynamic moving environments where the user cannot relax with all the sensors attached to the body and it provides significant noises in the signals. This paper presents a case study using a contact-free approach for CL classification based on Heart Rate Variability (HRV) collected from ECG signal. Here, a contact-free approach i.e., a camera-based system is compared with a contact-based approach i.e., Shimmer GSR+ system in detecting CL. To classify CL, two different Machine Learning (ML) algorithms, mainly, Support Vector Machine (SVM) and k-Nearest-Neighbor (k-NN) have been applied. Based on the gathered Inter-Beat-Interval (IBI) values from both the systems, 13 different HRV features were extracted in a controlled study to determine three levels of CL i.e., S0: low CL, S1: normal CL and S2: high CL. To get the best classification accuracy with the ML algorithms, different optimizations such as kernel functions were chosen with different feature matrices both for binary and combined class classifications. According to the results, the highest average classification accuracy was achieved as 84% on the binary classification i.e. S0 vs S2 using k-NN. The highest F1 score was achieved 88% using SVM for the combined class considering S0 vs (S1 and S2) for contact-free approach i.e. the camera system. Thus, all the ML algorithms achieved a higher classification accuracy while considering the contact-free approach than contact-based approach.
Fichier principal
Vignette du fichier
497040_1_En_3_Chapter.pdf (687.73 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-04050591 , version 1 (29-03-2023)

Licence

Paternité

Identifiants

Citer

Mobyen Uddin Ahmed, Shahina Begum, Rikard Gestlöf, Hamidur Rahman, Johannes Sörman. Machine Learning for Cognitive Load Classification – A Case Study on Contact-Free Approach. 16th IFIP International Conference on Artificial Intelligence Applications and Innovations (AIAI), Jun 2020, Neos Marmaras, Greece. pp.31-42, ⟨10.1007/978-3-030-49161-1_3⟩. ⟨hal-04050591⟩
11 Consultations
6 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More