The Dichotomy Model was created by Dr. Cha (although some have claimed its earlier existance) and we have been using it in most of our biometric work.
For background information on this model, see
and Associated Experiments
Biometric and keystroke system background:
- Dr. Cha's Dissertation: "Use of Distance Measures in Handwriting Analysis"
- On the Individuality of the Iris Biometric
- BTAS2010 Conference Paper
R.S. Zack, C.C. Tappert, and S. Cha,
"Performance of a Long-Text-Input Keystroke Biometric Authentication System Using an Improved k-Nearest-Neighbor Classification Method,"
Proc. IEEE 4th Int. Conf. Biometrics, Washington D.C., September 2010.
- IJCB2011 Conference Paper
John C. Stewart, John V. Monaco, Sung-Hyuk Cha, and Charles C. Tappert,
"An Investigation of Keystroke and Stylometry Traits for Authenticating Online Test Takers,"
Proc. IEEE Int. Joint Conf. Biometrics, Washington D.C., October 2011.
This project has two aims:
- Do a literature search to determine the novelty of the Dichotomy Model and compare it with related models
- Explore the power of the dichotomy model - primarily by running additional weak versus strong training experiments with the PKBS