Control Chart for Monitoring Autocorrelated Process with Multiple Exogenous Inputs |
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| Authors: | Ma Sofia Criselda A Poblador |
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| Institution: | Department of Physical Sciences and Mathematics, University of the Philippines Manila, Manila, Philippines |
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| Abstract: | We propose to use AR-Sieve Bootstrap in the construction of a control chart of an autocorrelated process influenced by multiple exogenous inputs. The control charts are compared with Exponentially Weighted Moving Average (EWMA) control chart through a simulation study. AR-Sieve bootstrap control limits are narrower than EWMA control limits. While the proposed method yields a higher rate of false alarms, it is quick in detecting even minimal structural changes. |
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| Keywords: | AR-Sieve Bootstrap Autocorrelated process Control chart EWMA Model uncertainty |
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