Text classi cation (TC) has long been an important research topic in information retrieval (IR) related areas. In the literature, the bag-of-words (BoW) model has been widely used to represent a document in text classi cation and many other applications. However, BoW, which ignores the relationships between terms, o ers a rather poor document representation. Some previous research has shown tha...

This paper introduces JNCC2, the Java implementation of the Naive Credal Classifier 2 (NCC2). JNCC2 is open source; it is hence freely available together with manual, sources and javadoc documentation. NCC2 is an extension of Naive Bayes Classifier (NBC) to imprecise probabilities, designed so as to return robust classifications even on small and/or incomplete data sets. A peculiar feature of N...

This study in Alexandria, Egypt was conducted to investigate the distribution of different hepatitis B virus (HBV) markers in apparently healthy blood donors who were hepatitis B surface antigen (HBsAg) negative, and to determine the major independent risk factors. Evidence of past exposure to HBV was found in 148/508 screened donors (29.1%). The most prevalent marker was anti-NBc in 124/508 do...

: This paper presents cooperative path planning approach for multi UAVs to detect, model and track the shape of a contaminant cloud boundary. The objective of this research study is to manage the resources (airborne sensors) such as to determine the boundary of a cloud and track its motion with minimum information. The dispersing model of the contaminant cloud boundary is based on SCIPUFF. The ...

We describe plausible lattice-based constructions with properties that approximate the soughtafter multilinear maps in hard-discrete-logarithm groups, and show that some applications of such multi-linear maps can be realized using our approximations. The security of our constructions relies on seemingly hard problems in ideal lattices, which can be viewed as extensions of the assumed hardness o...

Packet error rate is one of the most important factors that determine the quality of service achieved over wireless networks. However, long term characteristics of the error process at the link-layer are not sufficient to guide decisions which may require short-term knowledge of the link state, such as, scheduling, and rate adaptation. We expect that transmitters will benefit from short term li...

This paper presents a case study about the applicability and usage of non blocking collective operations. These operations provide the ability to overlap communication with computation and to avoid unnecessary synchronization. We introduce our NBC library, a portable low-overhead implementation of non blocking collectives on top of MPI-1. We demonstrate the easy usage of the NBC library with th...