This paper presents a multi-objective approach to Web space partitioning, aimed to improve distributed crawling efficiency. The investigation is supported by the construction of two different weighted graphs. The first is used to model the topological communication infrastructure between crawlers and Web servers and the second is used to represent the amount of link connections between servers’...

This paper describes the implementation of Distributed Active Filters (DAFs). To share the workload of harmonic filtering, several Active Filter Units (AFUs) are placed on different locations which can perform the harmonic filtering without a direct communication. Different configurations of DAFs are described and are implemented using MATLAB /Simpower system Toolbox environment to observe thei...

Many applications that consist of streams of data are inherently distributed. Since input stream rates and other system parameters such as the amount of available computing resources can fluctuate significantly, a stream query plan must be able to adapt to these changes. Routing tuples between operators of a distributed stream query plan is used in several data stream management systems as an a...

Grid computing is defined as geographically distributed, heterogeneity (different hardware, software and networks), resource sharing, multiple administrators, dependable access, and Pervasive access within dynamic organizations. In grid computing, the rate of failure is much greater than in traditional parallel computing. Therefore, the fault tolerance is an important property in order to achie...

We present a model of parallel search in theorem proving for forward-reasoning strategies, with contraction and distributed search. We extend to parallel search the bounded-search-spaces approach to the measurement of infinite search spaces, capturing both the advantages of parallelization, e.g., the subdivision of work, and its disadvantages, e.g., the cost of communication, in terms of search...

The complex structure of the Web requires decentralised, adaptive mechanisms efficiently providing access to local and global capacities. To facilitate the development of such mechanisms, it seems reasonable to build clusters of machines with similar structures and interests. In such a manner, communities of machines can be built. In a community, every machine contributes to the overall success...