مشخصات پژوهش

خانه /استنباط نقطه تغییر در کنترل ...
عنوان استنباط نقطه تغییر در کنترل کیفیت
نوع پژوهش پایان‌نامه
کلیدواژه‌ها Quality control , change point estimation , control chart , maximum likelihood estimator , special cause identification , process improvementQuality control , change point estimation , control chart , maximum likelihood estimator , special cause identification , process improvement
چکیده In this thesis, we discuss the problem of change point estimation in quality control. When the control chart makes a signal which shows that the process is out of control, and the process mean has been changed if we can find a good estimate of the change point, the main cause of disturbances can be identified more quickly. Last studies usually assume that the change in the process mean is a step change, and under this assumption, using Bayesian and Classical methods, the change point is estimated. In this thesis it is assumed that the change. In the process mean has a linear trend. Under this condition the change point is estimated. In addition, a new criteria for evaluating the estimate of the change point is introduced. Then, using this criteria, the efficiency of the estimators is evaluated in different conditions.
پژوهشگران معصومه زلقی (دانشجو)، محمداسماعیل دهقان منفرد (استاد راهنما)، فضل الله لک (استاد مشاور)