The Partially Observable Hidden Markov Model with Application to Keystroke Biometrics

Robustness of keystroke-dynamics based biometrics against synthetic forgeries

Biometric systems including keystroke-dynamics based authentication have been well studied in the literature. The attack model in biometrics typically considers impersonation attempts launched by human imposters. However, this attack model is not adequate, as advanced attackers may utilize programs to forge data. In this paper, we consider the effects of synthetic forgery attacks in the context...

MHIDCA: Multi Level Hybrid Intrusion Detection and Continuous Authentication for MANET Security

Mobile ad-hoc networks have attracted a great deal of attentions over the past few years. Considering their applications, the security issue has a great significance in them. Security scheme utilization that includes prevention and detection has the worth of consideration. In this paper, a method is presented that includes a multi-level security scheme to identify intrusion by sensors and authe...

MDPs Semi - Markov decision processes Hidden Markov models Partially observable SMDPs Hierarchical HMMs

Performance of a Single Action Partially Observable Markov Decision Process in a Recognition Task

Partially Observable Markov Decision Processes (POMDPs) have been applied extensively to planning in environments where knowledge of an underlying process is confounded by unknown factors[3, 4, 7]. By applying the POMDP architecture to basic recognition tasks, we introduce a novel pattern recognizer that operates under partially observable conditions. This Single Action Partially Observable Mar...

Performance of a Single Action POMDP in a Recognition Task

Partially Observable Markov Decision Processes (POMDPs) have been applied extensively to planning in environments where knowledge of an underlying process is confounded by unknown factors[3, 4, 7]. By applying the POMDP architecture to a basic recognition task, we introduce a novel pattern recognizer that operates under partially observable conditions. This Single Action Partially Observable Ma...