An increased anxiety in security in modern ages has primarily resulted in vast attention being given to biometric-based authentication techniques. Biometrics refers to the automatic authentication of human beings based on their physiological and/or behavioral characteristics. This paper proposes a newborn footprint matching system based on the extraction of texture features using LBP. Newborn a...

We focus on the definition and identification of “Web user-sessions”, an aggregation of several TCP connections generated by the same source host on the basis of TCP connection opening time. The identification of a user session is non trivial; traditional approaches rely on threshold based mechanisms, which are very sensitive to the value assumed for the threshold, which may be difficult to cor...

Measuring a path performance according to one or several metrics, such as delay or bandwidth, is becoming more and more popular for applications. However, constantly probing the network is not suitable. To make measurements more scalable, the notion of clustering has emerged. In this paper, we demonstrate that clustering can limit the measurement overhead in such a context without loosing too m...

Article history: Received 27 February 2008 Received in revised form 16 July 2008 Accepted 22 July 2008 Available online 29 August 2008 The ecological footprint is a measure of the resources necessary to produce the goods that an individual or population consumes. It is also used as a measure of sustainability, though evidence suggests that it falls short. The assumptions behind footprint calcul...

The wide deployment of 802.11 WLANs has led to the coexistence of wired and wireless clients in a network environment. This paper presents a robust technique to detect 802.11 wireless hosts through passive observation of client traffic streams at the edge of the network. It is based on the estimation of entropy of packet interarrival times and on the analysis of variation in the measured entrop...

In this paper, we review ICARUS, a cognitive architecture that utilizes hierarchical skills and concepts for reactive execution in physical environments. In addition, we present two extensions to the framework. The first involves the incorporation of means-ends analysis, which lets the system compose known skills to solve novel problems. The second involves the storage of new skills that are ba...

We develop and test algorithms for assessing the similarity of a person’s days based on location traces recorded from GPS. An accurate similarity measure could be used to find anomalous behavior, to cluster similar days, and to predict future travel. We gathered an average of 46 days of GPS traces from 30 volunteer subjects. Each subject was shown random pairs of days and asked to assess their ...