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دسته بندی:
داده های بزرگ - big data
سال انتشار:
2018
عنوان انگلیسی مقاله:
An intelligent non-optimality self-recovery method based on reinforcement learning with small data in big data era
ترجمه فارسی عنوان مقاله:
یک روش خود بازیابی غیر بهینه هوشمند مبتنی بر تقویت یادگیری با داده های کوچک در دوران داده های بزرگ
منبع:
Sciencedirect - Elsevier - Chemometrics and Intelligent Laboratory Systems, 176 (2018) 89-100: doi:10:1016/j:chemolab:2018:03:010
نویسنده:
Yan Qin a, Chunhui Zhao a,*, Furong Gao b
چکیده انگلیسی:
Batch processes have attracted extensive attention as a crucial manufacturing way in modern industries. Although
they are well equipped with control devices, batch processes may operate at a non-optimal status because of
process disturbances, equipment aging, feedstock variations, etc. As a result, the quality indices or economic
benefits may be undesirable using the pre-defined normal operation conditions. And this phenomenon is called
non-optimality here. Therefore, it is indispensable to timely remedy the process to its optimal status without
accurate models or amounts of data. To solve this problem, this study proposes an intelligent non-optimality self
recovery method based on reinforcement learning. First, the causal variables that lead to the non-optimality are
identified by developing a status-degraded Fisher discriminant analysis with consideration of sparsity. Second, on
the basis of self-learning mechanism, an intelligent self-recovery method is proposed using the reinforcement
learning to automatically adjust the set-points of the causal controlled variables. The self-recovery action is taken
iteratively through the Actor-Critic structure with two neural networks. In this way, effective actions are taken to
remedy the process to its expected status which only require small data. Finally, the efficacy of the proposed
method is illustrated by both numerical case and a typical batch-type manufacturing process, i.e., the injection
molding process.
Keywords: Intelligent non-optimality self-recovery ، Non-optimal diagnosis ، Reinforcement learning ، Actor-Critic structure ، Big data era
قیمت: رایگان
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