Communicating with Databases in Natural Language. by Wallace M.

By Wallace M.

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1,1]. For the actual execution time of each task we adopt the approach in [6], and we use the notion of Quality of Information (QoI). This represents an upper bound on the percentage of error that the static estimate may have with respect to the actual execution time. So, for example, a percentage error of 10% would indicate that the (simulated) run-time execution time of a task will be within 10% (plus or minus) of the static estimate for the task. In our experiments we consider an error of up to 50%.

3 shows snapshot of a small Montage workflow that consists of 1200 executable jobs. In the case of Montage, the application scien- 16 E. Deelman et al. tists produce their own abstract workflows without using Chimera, because they need to tailor the workflow to individual requests [6]. The Galaxy morphology application [13] is used to investigate the dynamical state of galaxy clusters and to explore galaxy evolution inside the context of large-scale structure. Galaxy morphologies are used as a probe of the star formation and stellar distribution history of the galaxies inside the clusters.

Molina; and for CMS: A. Arbree and R. Cavanaugh. 20 E. Deelman et al. References 1. org 2. A. Abramovici et al. LIGO: The Laser Interferometer Gravitational- Wave Observatory (in Large Scale Measurements). Science, 256(5055), 1992. 3. E. Akarsu et al. Webflow - high-level programming environment and visual authoring toolkit for high performance distributed computing. In Sc’98, 1998. 4. B. Allcock et al. Data management and transfer in high performance computational grid environments, Parallel Computing Journal, 28, 5, 2002a, 749-771, 2002.

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