Semi-qualitative Temporal Episodes Prognosis for Process Supervision
نویسنده
چکیده
This paper deals with a prognosis method that is used in an operation support system. The role of prognosis in a supervisory system is analysed. Then, a supervision method based on trend analysis is explained. First the on line extraction of semi-qualitative episodes from a noisy signal is described. The method uses a segmentation algorithm, a classification of the segments into seven temporal shapes and a temporal aggregation of episodes. Discontinuities are preserved, which is important in case of failure. Then, the estimation of relevant variables future evolution is described, which is based on the last semi-qualitative episode. A two tanks system is used as a pedagogical example to illustrate the method potential. An industrial application is then described shortly. Copyright © 2005 IFAC
منابع مشابه
Learning from Clinical Judgments: Semi-Markov-Modulated Marked Hawkes Processes for Risk Prognosis
Critically ill patients in regular wards are vulnerable to unanticipated adverse events which require prompt transfer to the intensive care unit (ICU). To allow for accurate prognosis of deteriorating patients, we develop a novel continuoustime probabilistic model for a monitored patient’s temporal sequence of physiological data. Our model captures “informatively sampled” patient episodes: the ...
متن کاملA Semi-Supervised Approach for Kernel-Based Temporal Clustering
Temporal clustering refers to the partitioning of a time series into multiple nonoverlapping segments that belong to k temporal clusters, in such a way that segments in the same cluster are more similar to each other than to those in other clusters. Temporal clustering is a fundamental task in many fields, such as computer animation, computer vision, health care, and robotics. The applications ...
متن کاملAn Intelligent Alarm System Based on Temporal Episodes for Intensive Care Units
This paper presents an alarm system based on temporal episodes. A temporal episode is semi qualitative information that describes the signal trend. The system developed is a limit alarm system based on episodes extracted on line. It is able to recognize specific signal behaviours such as probe disconnection or steady state near the alarm limit threshold. The system is implemented to run on line...
متن کاملA qualitative inquiry into the challenges and complexities of research supervision: viewpoints of postgraduate students and faculty members
INTRODUCTION The supervision of academic theses at the Universities of Medical Sciences is one of the most important issues with several challenges. The aim of the present study is to discover the nature of problems and challenges of thesis supervision in Iranian universities of medical sciences. METHODS The study was conducted with a qualitative method using conventional content analysis app...
متن کاملIntelligent Process Supervision Using Renforcement Learning and Temporal Abstraction
Supervisory control usually involves timely switching among different courses of action over multiple time scales. In this work, intelligent process supervision is addressed in the context of semi-Markov decision processes and reinforcement learning. Temporally extended actions that represent a way of behaving together with a termination condition are used to achieve a set of operational goals/...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2005