Conditional homodyne detection of quadrature squeezing is compared with standard nonconditional detection. Whereas the latter identifies nonclassicality in a quantitative way, as a reduction of the noise power below the shot noise level, conditional detection makes a qualitative distinction between vacuum state squeezing and squeezed classical noise. Implications of this comparison for the real...

We experimentally analyze the accuracy of the System Z+ qualitative probability scheme of Goldszmidt and Pearl when used for diagnosis and information fusion. The Intrusion Detection System (IDS) fusion system Scyllarus, and its successor MIFD, use Z+ to assess the likelihood of various cyber attack events based on reports from IDSes. Z+ provides an order of magnitude approximation of conventio...

Application and development of specialized machine learning techniques is gaining increasing attention in the intrusion detection community. A variety of learning techniques proposed for different intrusion detection problems can be roughly classified into two broad categories: supervised (classification) and unsupervised (anomaly detection and clustering). In this contribution we develop an ex...