Semantic Metadata Generation for Large Scientific Workflows
نویسندگان
چکیده
In recent years, workflows have been increasingly used in scientific applications. This paper presents novel metadata reasoning capabilities that we have developed to support the creation of large workflows. They include 1) use of semantic web technologies in handling metadata constraints on file collections and nested file collections, 2) propagation and validation of metadata constraints from inputs to outputs in a workflow component, and through the links among components in a workflow, and 3) sub-workflows that generate metadata needed for workflow creation. We show how we used these capabilities to support the creation of large workflows in an earthquake science application.
منابع مشابه
Intelligent Workflow Systems and Provenance-Aware Software
Workflows are increasingly used in science to manage complex computations and data processing at large scale. Intelligent workflow systems provide assistance in setting up parameters and data, validating workflows created by users, and automating the generation of workflows from high-level user guidance. These systems use semantic workflows that extend workflow representations with semantic con...
متن کاملBest Practices for Workflow Design: How to Prevent Workflow Decay
In this position paper we present a set of best practices for workflow design to prevent workflow decay and increase reuse and re-purposing of scientific workflows. MyExperiment provides access to a large number of scientific workflows. However, scientists find it difficult to reuse or re-purpose these workflows for mainly two reasons: workflows suffer from decay over time and lack sufficient m...
متن کاملWings for Pegasus: Creating Large-Scale Scientific Applications Using Semantic Representations of Computational Workflows
Scientific workflows are being developed for many domains as a useful paradigm to manage complex scientific computations. In our work, we are challenged with efficiently generating and validating workflows that contain large amounts (hundreds to thousands) of individual computations to be executed over distributed environments. This paper describes a new approach to workflow creation that uses ...
متن کاملAHP Techniques for Trust Evaluation in Semantic Web
The increasing reliance on information gathered from the web and other internet technologies raise the issue of trust. Through the development of semantic Web, One major difficulty is that, by its very nature, the semantic web is a large, uncensored system to which anyone may contribute. This raises the question of how much credence to give each resource. Each user knows the trustworthiness of ...
متن کاملA Semantic Model of Computation for Natural System Modelling
This contribution is a reflection on the often mentioned idea of declarative modelling, linking it to the most recent advances in knowledge representation science and to the semantic web initiative. I will present a next-generation approach to modelling that has the potential of unifying representations of data and metadata, their use in the chain of processing in scientific workflows, and the ...
متن کامل