We consider the problem of detecting known signals contaminated by additive noise with a completely unknown probability density function f: To this end, we propose a new adaptive detection rule. It is defined by plugging a kernel density estimator ^ f of f into the maximum a posteriori (MAP) detector. The estimate ^ f can either be computed off-line from a training sequence or on-line simultane...

There are several common conventions in use by the gravitational-wave community to describe the amplitude of sources and the sensitivity of detectors. These are frequently confused. We outline the merits of and differences between the various quantities used for parameterizing noise curves and characterizing gravitational-wave amplitudes. We conclude by producing plots that consistently compare...

This paper presents a novel generalized feature extraction method based on the Expansion Matching EXM method and the Karhunen Loeve KL transform This yields an e cient method to locate a large variety of features with reduced number of ltering operations The EXM method is used to design optimal detectors for di erent features The KL representation is used to de ne an optimal basis for represent...

We evaluate the ability of the BATSE spectroscopy detectors to detect the absorption lines observed by Ginga in gamma ray burst spectra. We find that BATSE can detect the 20.6 keV line in the S1 segment of GB870303 with a detection probability of ∼ 1/4 in nearly normally incident bursts, with the probability dropping off to nearly 0 at a burst angle of 50◦; the lines at 19.4 and 38.8 keV lines ...

Introduction: Iterative reconstruction techniques provide better image quality and have the potential for reconstructions with lower imaging dose than classical methods in computed tomography (CT). However, the computational speed is major concern for these iterative techniques. The system matrix calculation during the forward- and back projection is one of the most time- cons...

In the context of multimedia data analysis, it is often necessary to understand what happens in a scene, which can rely on detecting and tracking the different moving objects and by comparing their positions at a given time with their environment. In order to model the environment or the scene background, we consider straight lines as appropriate features. In this paper, we compare some classic...

Hardware-based malware detectors (HMDs) are a promising new approach to defend against malware. HMDs collect low-level architectural features and use them to classify malware from normal programs. With simple hardware support, HMDs can be always on, operating as a first line of defense that prioritizes the application of more expensive and more accurate software-detector. In this paper, our goa...

Introduction: Radon is a colorless inert gas which decay products are the main component of natural radioactive elements that are naturally produced in under layers of earth crust by decay of radium and uranium. It enters through buildings via gaps and cracks. Radon gas decay products like alpha particle can increase the incidence of lung cancer in human. Since every person sp...