Results 21 to 30 of about 5,663 (257)
Rates and Rocks: Strengths and Weaknesses of Molecular Dating Methods
I present here an in-depth, although non-exhaustive, review of two topics in molecular dating. Clock models, which describe the evolution of the rate of evolution, are considered first.
Stéphane Guindon
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Monitoring multistage processes with autocorrelated observations
In multistage manufacturing processes, autocorrelations within stages over time are prevalent and the classical control charts are often ineffective in monitoring such processes. In this paper, we derive a linear state space model of an autocorrelated multistage process as a vector autoregressive process, and construct novel multivariate control charts,
Kim, Jinho +2 more
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Monitoring the Zero-Inflated Time Series Model of Counts with Random Coefficient
In this research, we consider monitoring mean and correlation changes from zero-inflated autocorrelated count data based on the integer-valued time series model with random survival rate.
Cong Li, Shuai Cui, Dehui Wang
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Subsampling Inference for the Autocorrelations of GARCH Processes*
AbstractWe provide self-normalization for the sample autocorrelations of power GARCH(p, q) processes whose higher moments might be infinite. To validate the studentization, whose goal is to match the growth rate dependent on the index of regular variation of the process, we substantially extend existing weak-convergence results.
McElroy, Tucker, Jach, Agnieszka
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Fitting a time series model to the process data before applying a control chart to the residuals is essential to fulfill the basic assumptions of statistical process control (SPC).
Siaw Li Lee +3 more
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Autocorrelated process monitoring using triggered cuscore charts [PDF]
Some of the most widely-investigated control charting techniques for autocorrelated data are based on time series residuals. If the mean shift in the autocorrelated process is a sudden step shift, the resulting mean shift in the residuals is time varying
Shu, Lianjie +5 more
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Because of the excellent performance on monitoring and controlling an autocorrelated process, the integration of statistical process control (SPC) and engineering process control (EPC) has drawn considerable attention in recent years.
Yuehjen E. Shao
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The GLRT for statistical process control of autocorrelated processes [PDF]
This paper presents an on-line Statistical Process Control (SPC) technique, based on a Generalized Likelihood Ratio Test (GLRT), for detecting and estimating mean shifts in autocorrelated processes that follow a normally distributed Autoregressive Integrated Moving Average (ARIMA) model.
Apley, Daniel W., Shi, Jianjun
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Autocorrelation of the susceptible-infected-susceptible process on networks [PDF]
In this paper, we focus on the autocorrelation of the susceptible-infected-susceptible (SIS) process on networks. The N-intertwined mean-field approximation (NIMFA) is applied to calculate the autocorrelation properties of the exact SIS process. We derive the autocorrelation of the infection state of each node and the fraction of infected nodes both in
Liu, Q. (author) +1 more
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A regression control chart for autocorrelated processes [PDF]
In this study, we present a new regression control chart which is able to detect the mean shift in a production process. This chart is designed for autocorrelated process observations having a linearly increasing trend.
Karaoglan, Aslan Deniz +1 more
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