Topic
Workflow
About: Workflow is a research topic. Over the lifetime, 31996 publications have been published within this topic receiving 498339 citations.
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TL;DR: This study proposes a new approach for multi-objective workflow scheduling in clouds, and presents the hybrid PSO algorithm to optimize the scheduling performance, based on the Dynamic Voltage and Frequency Scaling (DVFS) technique to minimize energy consumption.
Abstract: We address the problem of scheduling workflow applications on heterogeneous computing systems like cloud computing infrastructures. In general, the cloud workflow scheduling is a complex optimization problem which requires considering different criteria so as to meet a large number of QoS (Quality of Service) requirements. Traditional research in workflow scheduling mainly focuses on the optimization constrained by time or cost without paying attention to energy consumption. The main contribution of this study is to propose a new approach for multi-objective workflow scheduling in clouds, and present the hybrid PSO algorithm to optimize the scheduling performance. Our method is based on the Dynamic Voltage and Frequency Scaling (DVFS) technique to minimize energy consumption. This technique allows processors to operate in different voltage supply levels by sacrificing clock frequencies. This multiple voltage involves a compromise between the quality of schedules and energy. Simulation results on synthetic and real-world scientific applications highlight the robust performance of the proposed approach.
133 citations
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08 Aug 2002
TL;DR: In this paper, a workflow is defined as a process that gets triggered in response to a predetermined event (1404) in a relationship management system, such as an incoming interaction like a phone call, a fax, an e-mail, or a web-form submission.
Abstract: The present invention relates to a workflow and workflow engine. A workflow in accordance with the present invention is a process that gets triggered in response to a predetermined event (1404) in a relationship management system. The event could be anything input into the system, such as an incoming interaction like a phone call, a fax, an e-mail, or a web-form submission. In addition an event (1404) could be a business events such as an overdue task, an inventory update, a merchandise sale, or an equipment order. A workflow is preferably characterized in terms of a set of steps the workflow is to perform (1406, 1400, 1402), such as creating or modifying a business object, creating and sending an email or fax, making a decision based on a query, scheduling a timed event, and so on.
133 citations
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TL;DR: This paper presents an approach on mining exact workflow models from workflow logs, outlines a model representation and specifies the mining input, and outlines evaluation results.
133 citations
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TL;DR: A novel approach to the preservation of scientific workflows through the application of research objects-aggregations of data and metadata that enrich the workflow specifications that support the creation of workflow-centric research objects.
133 citations
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TL;DR: This work discusses in detail advanced workflow recovery concepts which are necessary for the reliable and consistent execution of business processes in the presence of failures and exceptions.
Abstract: Workflow management systems (WFMSs) are becoming the basic technology for organizations to perform their daily business processes (workflows). A consistent and reliable execution of such processes is crucial for all organizations. The authors claim that this can only be achieved by integrating transactional features-especially "workflow transactions"-into WFMSs. Based on this idea, they discuss in detail advanced workflow recovery concepts which are necessary for the reliable and consistent execution of business processes in the presence of failures and exceptions. Additionally, they distinguish between different workflow types and present adequate recovery concepts for each of them.
132 citations