Nonparametric Supervised Learning for Enhancing BCI Performance

Pei Lun Wu, Cory Stevenson, Li Wei Ko*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Improving the function and reliability of brain-computer interfaces (BCIs) is an important factor in facilitating their usage to impact human wellbeing. This research developed a BCI system that utilized nonparametric feature extraction and dimension reduction and supervised learning as a framework for improving accuracy. A BCI experiment using steady-state visually evoked potentials (SSVEP) was conducted as a test basis for our framework. Typical unsupervised learning BCI techniques were tested and found to be improved when harmonic frequencies were included as inputs. Nonparametric weighted feature extraction (NWFE) and physiologically relevant input features were found to improve supervised learning classifiers in our BCI framework, which could outperform the comparable unsupervised methods. This framework presents a novel basis for enhancing BCIs which take into account known physiological information and NWFE to perform better.

Original languageEnglish
Title of host publication2021 International Automatic Control Conference, CACS 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781665444125
DOIs
StatePublished - 2021
Event2021 International Automatic Control Conference, CACS 2021 - Chiayi, Taiwan
Duration: 3 Nov 20216 Nov 2021

Publication series

Name2021 International Automatic Control Conference, CACS 2021

Conference

Conference2021 International Automatic Control Conference, CACS 2021
Country/TerritoryTaiwan
CityChiayi
Period3/11/216/11/21

Keywords

  • Brain-computer interface (BCI)
  • Electroencephalography
  • Nonparametric weighted feature extraction
  • SSVEP
  • Supervised learning

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