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When large data repositories are coupled with geographic distribution of data, users and systems, it is necessary to combine different technologies for implementing high-performance distributed knowledge discovery systems. On the other hand, computational grid is emerging as a very promising infrastructure for high-performance distributed computing. Grid applications such as astronomy, chemistry,...
In a mobile database environment, multiple mobile hosts may access the similar data items independent of their physical locations. This may result in inconsistency of data items. Several Concurrency control techniques have been proposed to eliminate the inconsistency of data items. However because of the mobility and disconnections, the traditional concurrency control strategies are not suitable in...
The new elitist multi-objective genetic algorithm PPNRGA have been used for solving engineering design problems with multiple objectives. Although there exists a number of classical techniques, evolutionary algorithms (EAs) have an edge over the classical methods where they can find multiple Pareto optimal solutions in one single simulation run. The new proposed algorithm is a parameterless penalty...
A criticism of evolutionary algorithms might be the lack of efficient and robust generic methods to handle constraints. The most widespread approach for constrained search problems is to use penalty methods, because of their simplicity and ease of implementation. Nonetheless, the most difficult aspect of the penalty function approach is to find an appropriate penalty parameters. In this paper, a method...
Concept hierarchies are important for generalization across database/data mining applications. From store catalogs and news services, to community classifieds, hierarchies are ubiquitous. We introduce a new variation of tree encoding with nested intervals by leveraging ldquocarry-along sortrdquo to generate hierarchies dynamically. ldquoCarry-along sortrdquo is an algorithm to build a generational...
A criticism of evolutionary algorithms might be the lack of efficient and robust generic methods to handle constraints. The most widespread approach for constrained search problems is to use penalty methods, because of their simplicity and ease of implementation. The penalty function approach is generic and applicable to any type of constraint (linear or nonlinear). Nonetheless, the most difficult...
The grid is an emerging technology for enabling resource sharing and coordinated problem solving in dynamic multi-institutional virtual organizations. The resource-matching problem in the grid involves assigning resources to tasks in order to satisfy task requirements and resource policies. Just as the World Wide Web has changed the way that society deals with information, researchers and educators...
This paper studies the latest research concept in Database Tree Encoding namely leveraging Carry-long Sort in nested set. To start with, the paper gives an introduction to the concept called ldquoCarry-along Sortrdquo and then applies this concept in Nested Set for generating hierarchies dynamically. There is no algorithm provides a flexibility to generate Nested Set as well materialized path together...
Concept hierarchies are important for generalization across database/data mining applications. Hierarchy generation has witnessed a booming interest with the exponential growth of information and the ever increasing needs for organizations. The underlying hierarchical structure identifies the relationships of dependence between different data categories and provides valuable sources of information...
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