Femtocell networks are about to be deployed for the improvements in the cellular coverage and capacity. However, this deployment is non trivial (mainly) because of the extra interference that they cause to the macrocell users that share the same portion of the spectrum. This paper proposes a non cooperative power control approach for interference mitigation in a mixed femtocell-macrocell enviro...

Clustering is an unsupervised learning problem whose objective is to find a partition of the given data. However, a major challenge in clustering is to define an appropriate objective function in order to to find an optimal partition that is useful to the user. To facilitate data clustering, it has been suggested that the user provide some supplementary information about the data (eg. pairwise ...

The diversity and complexity of modern data management applications have led to the extension relational paradigm with syntactic semantic support for User-Defined Functions (UDFs). Although well-established in traditional DBMS settings, UDFs become central many application contexts as well, such science, analytics, edge computing. Still, a critical limitation is impedance mismatch between their...

The aim is to facilitate the application of user defined constraints to the genetic clustering algorithm. This is achieved by presenting a general penalty function. The penalty function is defined as a normal distribution. The function is augmented to an extensible environment to assemble genetic clustering algorithms, called DAGC. The main idea behind the design of DAGC is to provide the resea...

In this paper a method is presented in details to solve a nonlinear partial differential equation which has many applications in engineering fields. The boundary condition is mixed to be able to define the value of function on its variation on the boundary. Examples are given to demonstrate the accuracy and efficiency of the method.

We define a new function-valued inner product on L2(G), called ?-bracket product, where G is a locally compact abelian group and ? is a topological isomorphism on G. We investigate the notion of ?-orthogonality, Bessel's Inequality and ?-orthonormal bases with respect to this inner product on L2(G).

Many modern applications require the evaluation of analytical queries on large amounts of data. Such queries entail joins and heavy aggregations that often include user-defined functions (UDF s). The most efficient way to process these specific type of queries is using tree execution plans. In this work, we develop an engine for analytical query processing and a suite of specialized techniques ...

in this paper a method is presented in details to solve a nonlinear partial differential equation which has many applications in engineering fields. the boundary condition is mixed to be able to define the value of function on its variation on the boundary. examples are given to demonstrate the accuracy and efficiency of the method.