In this work we present a preliminary study of the issues surrounding the development of Seach Engines for Grid environments. We discuss the need for Grid Search Engines, that would enable the provision of a variety of Grid information services, such as locating useful resources, learning about their capabilities, and expected conditions of use. The Chapter highlights the main requirements for ...

The Weibull distribution is widely employed in several areas of engineering because it is an extremely flexible distribution with different shapes. Moreover, it can include characteristics of several other distributions. However, successful usage of Weibull distribution depends on estimation accuracy for three parameters of scale, shape and location. This issue shifts the attentions to the requ...

Context: One of the black arts of data mining is learning the magic parameters that control the learners. In software analytics, at least for defect prediction, several methods, like grid search and differential evolution(DE), have been proposed to learn those parameters. They’ve been proved to be able to improve learner performance. Objective: We want to evaluate which method that can find bet...

This work introduces local search based algorithms as a new technique for the Grid scheduling problem. Specific algorithms based on dispatching rules and local search were proposed and implemented to generate schedule for dynamically arriving jobs. Algorithm performance was compared with typical queue-based algorithms on the basis of objective function optimisation and time required to generate...

We are developing a Grid Enabled Optimisation and Design Search system (GEODISE). It offers grid-based access to a state-of-the-art collection of optimisation and design search tools, industrial strength analysis codes, and distributed computing and data resources.

Encryption Key Search is a compute-intensive operation that consists of a brute-force search of a particular key in a given key space. Sequential execution time for a 56-bit encryption key search is approximately 200,000 years and therefore it is ideal to execute such operation in a grid environment. ALiCE (Adaptive and scaLable internet-based Computing Engine) is a grid middleware that offers ...

This paper is concerned with the use of grid search as a means of optimizing an objective function that can be evaluated only through simulation. We study the question of how rapidly the number of replications per grid point must grow relative to the number of grid points, in order to reduce the \noise" in the function evaluations and guarantee consistency. This question is studied in the conte...

The UK Department of Trade and Industry (DTI) funded BRIDGES project (Biomedical Research Informatics Delivered by Grid Enabled Services) has developed a Grid infrastructure to support cardiovascular research. This includes the provision of a compute Grid and a data Grid infrastructure with security at its heart. In this paper we focus on the BRIDGES data Grid. A primary aim of the BRIDGES data...

This paper presents a way of searching remote procedures in OGSAbased GridRPC systems. GGF recommends a grid-enabled, remote procedure call mechanism (GridRPC) to provide a low barrier to acceptance for grid by providing a well-known and established programming model that allows the full use of grid resources while hiding the tremendous amount of infrastructure necessary to make grids work. In ...

Search Engine for South-East Europe (SE4SEE) is a socio-cultural search engine running on the grid infrastructure. It offers a personalized, on-demand, country-specific, category-based Web search facility. The main goal of SE4SEE is to attack the page freshness problem by performing the search on the original pages residing on the Web, rather than on the previously fetched copies as done in the...