We distinguish that Web query processing is composed of two phases: (a) retrieving information on documents related to the queries and ranking them, and (b) generating snippets, title, and URL information for the answer page. Using real data and a small cluster of index servers, we study four basic and key issues related to this first phase of query processing: load balance, broker behavior, pe...

Recent advances in computer technology will certainly have a great impact on the methodologies used in power system expansion and operational planning as well as in real-time control. Pa~allel a~d distributed processing are among the new technologies that present great potentllu for apphcatlon lU these areas. Parallel computers use multipie functional or processing units to speed up computation...

Wireless sensor networks (WSNs) are formed of tiny, highly energy-constrained sensor nodes that are equipped with wireless transceivers. They may be mobile and are usually deployed in large numbers in unfamiliar environments. The nodes communicate with one another by autonomously creating ad-hoc networks which are subsequently used to gather sensor data. WSNs also process the data within the ne...

Traditional solutions to large-scale signal processing involve massive supercomputers consisting of multiple processors. Data is processed in a pipelined fashion that can incorporate multiple machines and numerous computing stages. The limitations to this approach include flexibility, scalability, cost and fault tolerance. Our research is focused on a new approach to signal processing that util...

Over the last years, stream data processing has been gaining atten— tion both in industry and in academia due to its wide range of appli— cations. To fulfill the need for scalable and efficient stream analyt— ics, numerous open source stream data processing systems (SDPSs) have been developed, with high throughput and low latency being their key performance targets. In this paper, we propose a ...

Let {Wi}i∈I be a (redundant) sequence of subspaces each being endowed with a weight vi, and let H be the closed linear span of the Wi’s, a composite Hilbert space. Provided that {(Wi, vi)}i∈I satisfies a certain property which controls the weighted overlaps of the subspaces, it is called a fusion frame. These systems contain conventional frames as a special case, however they go far “beyond fra...

This paper examines several hyperspectral data processing algorithms designed for a distributed computing environment. Due to the large size, hyperspectral data requires long computational times to process. In a distributed environment, the processing can be split into several components, many of them being executed simultaneously, thus leading to increased time efficiency. The algorithms are d...

Digital's ACMSxp portable transaction processing (TP) monitor supports open TP standards and provides an environment for the development, execution, and administration of robust, distributed, client-server applications. The ACMSxp TP monitor supports the Structured Transaction Definition Language, a modular language that simplifies the development of transactional applications. ACMSxp software ...

Matrix Distributed Processing is a collection of classes and functions written in C++ for fast development of efficient parallel algorithms for the most general lattice/grid application. FermiQCD is an Object Oriented Lattice QCD application of MDP, under development at Fermilab.