Workflow Based Service Composition Using Genetic Algorithms
Journal Title: Acta Technica Napocensis- Electronica-Telecomunicatii (Electronics and Telecommunications) - Year 2010, Vol 51, Issue 2
Abstract
One common direction in service oriented computing is to use predefined workflows to compose new services that combine the functionality of existing services. But the problem with this approach is that services can’t be composed for which workflows are not available. We propose a genetic algorithm that combines workflows in order to find the best solution that satisfies a set of objectives formulated using imperative natural language requests. The function that measures how close a solution is to what the user expects from the composed service is a semantic similarity function, called the conceptual distance.
Authors and Affiliations
Florin-Claudiu POP, Marcel CREMENE, Mircea-Florin VAIDA
A Derived Robust Statistics Approach For Adaptive Volterra Filters Applied In Nonlinear Acoustic Echo Cancellation Scenarios
The paper proposes a novel updating concept for adaptive Volterra kernels that relies on a robust statistics approach. The optimization of a certain cost function leads to the update equations for the linear and quadrati...
An Overview of Today's Multipath Routing
The increased number of applications with strict demands regarding throughput and delay (e.g. video streaming, VoIP, video conferencing) determines the need for more efficient routing procedures in the Internet. Multipat...
Defect detection and restoration of heritage images
One of the major problems of the old artworks is their degradation due to aging. As a result, the digitized artworks images exhibit a series of defects. Whereas scientific methods were applied to the analysis and restora...
Acoustic Echo Cancellation Using Wavelet Transform And Adaptive Filters
The paper proposes a new method for acoustic echo cancellation(AEC), in order to improve the performances of the normalized least-mean-square (NLMS) and non-parametric variable- step -size-NLMS (NPVSS-NLMS) algorithms. T...
An Affordable Approach For Extending The SDR Concept Over X Microwaves Radio Band
In this paper several technical solutions are proposed to extend SDR technology to X microwave band, at low cost. This extension requires a hardware combination of modules, most of them readily available on market from c...