'Relative error' diaporamas de présentation

Answering Approximate Queries Efficiently

Chen Li Department of Computer Science Joint work with Liang Jin, Nick Koudas, Anthony Tung, and Rares Vernica. Answering Approximate Queries Efficiently. 30,000-Foot View of Info Systems. Data Repository (RDBMS, Search Engines, etc.). Answers matching conditions. Query. Tom.

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Bitmap Algorithms for Counting Active Flows on High Speed Links

Bitmap Algorithms for Counting Active Flows on High Speed Links. Cristian Estan, George Varghese, Mike Fisk Computer Science and Engineering Department, University of California, San Diego. Why count flows?. Detect port/IP scans Identify DoS attacks Estimate spreading rate of a worm

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Rare-Event Simulation for Many-Server Queues

Rare-Event Simulation for Many-Server Queues. Henry Lam Department of Mathematics and Statistics, Boston University Joint work with J. Blanchet, X. Chen and P. W. Glynn. Many-Server Loss System. Customer. Server 1. Server 2. Server 3. Server 4. Server . Many-Server Loss System.

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MATHEMATICS THE LANGUAGE OF SCIENCE

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One-Pass Wavelet Synopses for Maximum-Error Metrics

One-Pass Wavelet Synopses for Maximum-Error Metrics. Panagiotis Karras Trondheim, August 31st, 2005. Research at HKU with Nikos Mamoulis. Outline. Preliminaries & Motivation Usefulness of Synopses Haar wavelet decomposition, conventional wavelet synopses The maximum error guarantee problem

498 views • 35 slides

Personalized Privacy Protection in Social Networks

Personalized Privacy Protection in Social Networks. Speaker : XuBo. Privacy Protection. Privacy Protection in Social Networks. more and more people join multiple social networks on the Web

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Physics of Transducers Definitions

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Virtual Crack Closure Technique Based on Meshless Shepard Interpolation Method (MSIM )

Virtual Crack Closure Technique Based on Meshless Shepard Interpolation Method (MSIM ). Ph.D. Feng Su 1,2 , Jie Wu 1,2,* , Prof. Yongchang Cai 1 ,2. 1 State Key Laboratory for disaster reduction in Civil Engineering

757 views • 22 slides

Uncertainty in eddy covariance flux measurements

Uncertainty in eddy covariance flux measurements. Andrew Richardson, University of New Hampshire David Hollinger, USDA Forest Service NSF Workshop on Data-Model Assimilation in Ecology: Techniques and Applications Norman, Oklahoma, October 22-24, 2007

448 views • 18 slides

Relative Network Positioning via CDN Redirections

Relative Network Positioning via CDN Redirections. A. Su, D. Choffnes , F. Bustamante, A. Kuzmanovic ICDCS 2008 Presented by: Imranul Hoque. Relative Network Positioning. Replica 2. Replica 1. Replica 3. How to calculate RTT?. Which one to choose?. Relative Position. 1. Replica 2

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Topics in Random Processes

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Introduction to error analysis

"The purpose of computing is insight, not numbers", R. H. Hamming. Introduction to error analysis. Class II. Last time:. We discussed what the course is and is not The place of computational science among other sciences Class web site, computer setup, etc. . Also last time:.

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Assessment of the Potential of Observations from TES to Constrain Emissions of Carbon Monoxide

Assessment of the Potential of Observations from TES to Constrain Emissions of Carbon Monoxide. Dylan B. A. Jones, Paul I. Palmer, Daniel J. Jacob Division of Engineering and Applied Sciences, and Department of Earth and Planetary Sciences, Harvard University, Cambridge, MA.

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Calculating Uncertainties

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CCS: A-CED.1, A-CED.3 Do Now:

MEN 11 11/26/12 Mrs.Cabanero / Ms.Saffer Goal : Students will be able to calculate relative error in measurement . CCS: A-CED.1, A-CED.3 Do Now:

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Accuracy and Precision

Accuracy and Precision. Measurements are qualitative or quantitative. Qualitative measurements give results that are descriptive and non-numerical. Example: Quantitative measurements give results that are definite, usually as numbers and units. Example:. Accuracy and Precision.

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Error Measurement and Iterative Methods

Error Measurement and Iterative Methods. Absolute & Forward Error Relative Error Cauchy Error. Errors and Estimates

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Engineering Computation

Engineering Computation. Part 2: Exercises. Bisection Method. function [res]=f(x) res=7500-1000.*(1-(1+x).^(-20))./x;. % This is the MainBisection program xl=0.0000001; xu=1; es=0.00002; imax=50; xx=linspace(xl,xu,20); yy=f(xx); plot(xx,yy); hold on

217 views • 7 slides

Propagated and Relative Error

Propagated and Relative Error. Propagated Error. First identify a formula that represents the situation given. Make sure your formula is written in terms of the variables that are being measured.

311 views • 6 slides