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Creative Commons
"... We describe a corpus 1 of provenance traces that we have collected by executing 120 real world scientific workflows. The workflows are from two different workflow systems: Taverna [5] and Wings [3], and 12 different application domains (see Figure 1). Table 1 provides a summary of this PROVcorpus. T ..."
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We describe a corpus 1 of provenance traces that we have collected by executing 120 real world scientific workflows. The workflows are from two different workflow systems: Taverna [5] and Wings [3], and 12 different application domains (see Figure 1). Table 1 provides a summary of this PROVcorpus
Why Workflows Break- Understanding and Combating Decay in Taverna Workflows
"... Abstract—Workflows provide a popular means for preserving scientific methods by explicitly encoding their process. However, some of them are subject to a decay in their ability to be reexecuted or reproduce the same results over time, largely due to the volatility of the resources required for workf ..."
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Cited by 2 (1 self)
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for workflow executions. This paper provides an analysis of the root causes of workflow decay based on an empirical study of a collection of Taverna workflows from the myExperiment repository. Although our analysis was based on a specific type of workflow, the outcomes and methodology should be applicable
RESEARCH Open Access Distilling structure in Taverna scientific workflows: a refactoring approach
"... Background: Scientific workflows management systems are increasingly used to specify and manage bioinformatics experiments. Their programming model appeals to bioinformaticians, who can use them to easily specify complex data processing pipelines. Such a model is underpinned by a graph structure, wh ..."
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, where nodes represent bioinformatics tasks and links represent the dataflow. The complexity of such graph structures is increasing over time, with possible impacts on scientific workflows reuse. In this work, we propose effective methods for workflow design, with a focus on the Taverna model. We argue
Expressive Reusable Workflow Templates
, 2009
"... Workflow systems can manage complex scientific applications with distributed data processing. Although some workflow systems can represent collections of data with very compact abstractions and manage their execution efficiently, there are no approaches to date to manage collections of application c ..."
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Cited by 14 (11 self)
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-ready workflows that enumerate all computations to be carried out. We implemented the proposed approach in the Wings workflow system. Our work is motivated by real-world complex scientific applications that require handling of nested collections of both components and data.
Scientific Workflow Reuse through Conceptual Workflows in
- 6th Workshop on Workflows in Support of Large-Scale Science(WORKS’11), ACM
, 2011
"... HAL is a multi-disciplinary open access archive for the deposit and dissemination of sci-entific research documents, whether they are pub-lished or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L’archive ouverte p ..."
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Cited by 4 (3 self)
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HAL is a multi-disciplinary open access archive for the deposit and dissemination of sci-entific research documents, whether they are pub-lished or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L’archive ouverte
Common Motifs in Scientific Workflows: An Empirical Analysis
"... in the last decade as a means for specifying and enacting computational experiments in modern science, reusing and repurposing existing workflows to build new scientific experiments is still a daunting task. This is partly due to the difficulty that scientists experience when attempting to understan ..."
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Cited by 4 (3 self)
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. As a first step towards abstractions, we report in this paper on the results of a manual analysis performed over a set of real-world scientific workflows from Taverna and Wings systems. Our analysis has resulted in a set of scientific workflow motifs that outline i) the kinds of data intensive
Humans In The Loop Of Scientific Workflows
, 2010
"... Abstract Due to their different target applications business and scientific workflow systems provide different sets of features to their users. Significant amount of research is currently being done to employ the business workflow technology in the scientific domain. This usually means extending the ..."
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of workflow execution. We present an approach and implementation based on BPEL and Pegasus and show that the approach can be beneficial to scientists.
Strengths and Weaknesses of Sub-Workflow
"... Abstract—Workflow orchestration tools have gained recognition for their role in scientific discovery. As the number of workflows proliferate, reuse and reproducibility become issues of importance. Reuse of a workflow is enhanced when the system on which it runs guarantees execution. An increasingly ..."
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Abstract—Workflow orchestration tools have gained recognition for their role in scientific discovery. As the number of workflows proliferate, reuse and reproducibility become issues of importance. Reuse of a workflow is enhanced when the system on which it runs guarantees execution. An increasingly
DYNAMIC WORKFLOWS FOR MULTIPHYSICS DESIGN
"... Summary. Large-scale multiphysics applications, e.g., aircraft flight simulation, require several layers for their effective implementation.The first layer includes the design of efficient methods for mathematical models, numeric problem solutions and data processing. This involves the optimization ..."
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to interact dynamically in explicit and coordinated ways to design new artefacts, e.g., workflow systems. This presentation is devoted to the third layer where sophisticated application codes are deployed and must be run cooperatively in heterogeneous, distributed and parallel environments. It is assumed here
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