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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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Journal ArticleDOI
TL;DR: This evaluation suggests that involving users and designers from the beginning improves the effectiveness of the VE in the context of the real world urban planning project, and demonstrates that appropriate levels of realism are significant for the design process and for communicating about designs.
Abstract: In this paper we present a user-centered design approach to the development of a Virtual Environment (VE), by utilizing an iterative, user-informed process throughout the entire design and development cycle. A preliminary survey was first undertaken with end users, that is, architects, chief engineers, and decision makers of a real-world architectural and urban planning project, followed by a study of the traditional workflow employed. We then determined the elements required to make the VE useful in the real-world setting, choosing appropriate graphical and auditory techniques to develop audiovisual VEs with a high level of realism. Our user-centered design approach guided the development of an appropriate interface and an evaluation methodology to test the overall usability of the system. The VE was evaluated both in the laboratory and, most importantly, in the users' natural work environments. In this study we present the choices we made as part of the design and evaluation methodologies employed, which successfully combined research goals with those of a real-world project. Among other results, this evaluation suggests that involving users and designers from the beginning improves the effectiveness of the VE in the context of the real world urban planning project. Furthermore, it demonstrates that appropriate levels of realism, in particular spatialized 3D sound, high-detail vegetation, and shadows, as well as the presence of rendered crowds, are significant for the design process and for communicating about designs; they enable better appreciation of overall ambience of the VE, perception of space and physical objects, as well as the sense of scale. We believe this study is of interest to VE researchers, designers, and practitioners, as well as professionals interested in using VR in their workplace.

125 citations

Journal ArticleDOI
TL;DR: A workflow and a few empirical case studies for Chinese word segmentation rules of the Conditional Random Fields model are presented, and the potential of leveraging natural language processing and knowledge graph technologies for geoscience is shown.

125 citations

Patent
30 Jan 2008
TL;DR: In this paper, the integration of workflow with a project management system that includes project segments, which are processes that can be defined and controlled by workflow routes, is discussed, where the relationship between the workflow routes can maintain the relationships between the project segments.
Abstract: The present invention relates to workflow systems and methods. In one embodiment, the invention relates to integration of a calendar system with a workflow system where a calendar event can initiate a workflow by sending a message to a form route manager. The completion of a workflow or step in the workflow can result in sending a message to a calendar system to generate an event. In another embodiment, the invention relates to the integration of workflow with a project management system that includes project segments, which are processes that can be defined and controlled by workflow routes. The project management system sends a message to the workflow system to initiate workflow and the workflow system sends a message to the project management system, for example, at the completion of the workflow route. The relationship between the workflow routes can maintain the relationship between the project segments. If the relationships between project segments change, the relationship between the workflow routes changes without added effort.

125 citations

Proceedings ArticleDOI
25 Mar 2016
TL;DR: The experiments on OpenStack, a popular open-source cloud infrastructure, show that CloudSeer's efficiency and problem-detection capability are suitable for online monitoring.
Abstract: Cloud infrastructures provide a rich set of management tasks that operate computing, storage, and networking resources in the cloud. Monitoring the executions of these tasks is crucial for cloud providers to promptly find and understand problems that compromise cloud availability. However, such monitoring is challenging because there are multiple distributed service components involved in the executions. CloudSeer enables effective workflow monitoring. It takes a lightweight non-intrusive approach that purely works on interleaved logs widely existing in cloud infrastructures. CloudSeer first builds an automaton for the workflow of each management task based on normal executions, and then it checks log messages against a set of automata for workflow divergences in a streaming manner. Divergences found during the checking process indicate potential execution problems, which may or may not be accompanied by error log messages. For each potential problem, CloudSeer outputs necessary context information including the affected task automaton and related log messages hinting where the problem occurs to help further diagnosis. Our experiments on OpenStack, a popular open-source cloud infrastructure, show that CloudSeer's efficiency and problem-detection capability are suitable for online monitoring.

124 citations

Journal ArticleDOI
TL;DR: A dynamic critical‐path‐based adaptive workflow scheduling algorithm for grids, which determines efficient mapping of workflow tasks to grid resources dynamically by calculating the critical path in the workflow task graph at every step is proposed.
Abstract: SUMMARY Effective scheduling is a key concern for the execution of performance-driven grid applications such as workflows. In this paper, we first define the workflow scheduling problem and describe the existing heuristic-based and metaheuristic-based workflow scheduling strategies in grids. Then, we propose a dynamic critical-path-based adaptive workflow scheduling algorithm for grids, which determines efficient mapping of workflow tasks to grid resources dynamically by calculating the critical path in the workflow task graph at every step. Using simulation, we compared the performance of the proposed approach with the existing approaches, discussed in this paper for different types and sizes of workflows. The results demonstrate that the heuristic-based scheduling techniques can adapt to the dynamic nature of resource and avoid performance degradation in dynamically changing grid environments. Finally, we outline a hybrid heuristic combining the features of the proposed adaptive scheduling technique with metaheuristics for optimizing execution cost and time as well as meeting the users requirements to efficiently manage the dynamism and heterogeneity of the hybrid cloud environment. Copyright © 2013 John Wiley & Sons, Ltd.

124 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20241
20234,414
20229,010
20211,461
20201,579
20191,702