Highly robust analysis of keystroke dynamics measurements
| Title | Highly robust analysis of keystroke dynamics measurements |
| Publication Type | Conference Paper |
| Year of Publication | 2015 |
| Authors | Kalina, J., Schlenker, A., Kutílek, P. |
| Conference Name | 2015 IEEE 13th International Symposium on Applied Machine Intelligence and Informatics (SAMI) |
| Keywords | Atmospheric measurements, authentication method, Covariance matrices, implicit weight assignment, keystroke dynamics measurements, message authentication, minimum weighted covariance determinant estimator, MWCD-L2-LDA, Particle measurements, pattern classification, Pollution measurement, principal component analysis, pubcrawl170115, regularized linear discriminant analysis, robust classification performance analysis, statistical analysis, typing characteristics |
| Abstract | Standard classification procedures of both data mining and multivariate statistics are sensitive to the presence of outlying values. In this paper, we propose new algorithms for computing regularized versions of linear discriminant analysis for data with small sample sizes in each group. Further, we propose a highly robust version of a regularized linear discriminant analysis. The new method denoted as MWCD-L2-LDA is based on the idea of implicit weights assigned to individual observations, inspired by the minimum weighted covariance determinant estimator. Classification performance of the new method is illustrated on a detailed analysis of our pilot study of authentication methods on computers, using individual typing characteristics by means of keystroke dynamics. |
| DOI | 10.1109/SAMI.2015.7061862 |
| Citation Key | kalina_highly_2015 |
- Particle measurements
- typing characteristics
- statistical analysis
- robust classification performance analysis
- regularized linear discriminant analysis
- pubcrawl170115
- principal component analysis
- Pollution measurement
- pattern classification
- Atmospheric measurements
- MWCD-L2-LDA
- minimum weighted covariance determinant estimator
- message authentication
- keystroke dynamics measurements
- implicit weight assignment
- Covariance matrices
- authentication method