Global ETD Search
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Showing 1 to 5 of 5 for “"EWMA charts"”.
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Adaptive Threshold Method for Monitoring Rates in Public Health Surveillance
… and exponentially weighted moving average (EWMA) charts. Our results indicate the adaptive threshold method gives more consistent statistical performance across different parameter sets and amounts of baseline historical data used for computing the statistics. For the power analysis, the …
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Fourier Series Applications in Multitemporal Remote Sensing Analysis using Landsat Data
… based on exponentially weighted moving average (EWMA) charts of harmonic residuals. In the process, a data-driven cloud filter is created, enabling use of partially clouded data. The approach is shown capable of detecting thins and subtle forest degradations in Alabama, USA, considerably finer …
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On Development and Performance Evaluation of Some Biosurveillance Methods
This study examines three applications of control charts used for monitoring syndromic data with different characteristics. The first part develops a seasonal autoregressive integrated moving average (SARIMA) based surveillance chart, and compares it with the CDC Early Aberration Reporting System …
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The Monitoring of Linear Profiles and the Inertial Properties of Control Charts
… and the exponentially weighted moving average (EWMA) chart, has an ability to detect process changes that varies over time depending on the past data observed. The chart statistics can take values such that some shifts in the parameters of the underlying probability distribution of the quality …
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Evaluation of Scan Methods Used in the Monitoring of Public Health Surveillance Data
… These metrics, in conjunction with control charts such as exponentially weighted moving average (EWMA) charts and cumulative sum (CUSUM) charts, are examined. Two new time-to-signal measures, the average time-between-signal events and the average signal event length, are introduced to better …