An algebraic complex event processing method for cyber-physical system

2018 ◽  
Vol 22 (S6) ◽  
pp. 15169-15177 ◽  
Author(s):  
Cheng Zhou ◽  
Youqian Feng ◽  
Zhonghai Yin
Keyword(s):  
Physical System ◽  
Complex Event Processing ◽  
Processing Method ◽  
Cyber Physical System ◽  
Event Processing

An Efficient Complex Event Processing Algorithm Based on NFA-HTBTS for Massive RFID Event Stream

2018 ◽  
Vol 11 (2) ◽  
pp. 18-30
Author(s):  
Jianhua Wang ◽  
Shilei Lu ◽  
Yubin Lan ◽  
Lianglun Cheng
Keyword(s):  
Detection Efficiency ◽  
Hash Table ◽  
Complex Event Processing ◽  
Processing Method ◽  
Tree Structure ◽  
Event Processing ◽  
Memory Consumption ◽  
Event Stream ◽  
Simulation Results ◽  
Nondeterministic Finite Automaton

This article describes how quickly picking up some valuable information from massive RFID event stream often faces with the problem of long detection time, high memory consumption and low detection efficiency due to its stream characteristics of volume, velocity, variety, value and veracity. Aim to solving the problems above, an efficient complex event processing method based on NFA-HTBTS (Nondeterministic Finite Automaton-Hash Table B+ Tree Structure) is presented in this article. The achievement of this article lies in that we successfully use the union of NFA and HTBTS to realize the detection of complex event in massive RFID event stream. Specially, in our scheme, after using NFA to match related primitive events from massive RFID event stream, we use hash table and B+ tree structure to successfully realize the detection of complex event from large matched results above, as a result, these problems existed in current methods above can be effectively solved by our scheme. The simulation results show that our proposed scheme outperforms some general methods for massive RFID event stream.

scholarly journals Complex Event Processing Methods for Greenhouse Control

Agriculture ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 811
Author(s):  
Yunsong Jia ◽  
Xiang Li
Keyword(s):  
Control System ◽  
Intelligent Control ◽  
High Efficiency ◽  
Complex Event Processing ◽  
Processing Method ◽  
Event Processing ◽  
Intelligent Control System ◽  
Complex Patterns ◽  
Domain Integration ◽  
Greenhouse Control

In the greenhouse environment, the application of complex event processing (CEP) technology can effectively tackle the problem of recognition of the complex patterns that appeared in greenhouse conditions. In the existing research, few scholars have proposed a scheme to integrate complicated scenes within the greenhouse environment with high efficiency, convenience, and low coupling. Therefore, in order to solve the problem of hard recognition and fusion of complex patterns in the greenhouse environment, based on the characteristics of the greenhouse, this paper proposes a complex event processing method for greenhouse control. Our method has high applicability and high expansibility, including 13 types of event processing agents and 21 types of typical events involved in greenhouse automatic control. This method has the advantages of low information coupling and multi-domain integration, which can be directly used by agricultural experts and related workers and is of great significance to promote the extensive application of CEP technology in the greenhouse field. Our experiment successfully realized a greenhouse intelligent control system based on CEP technology is successfully realized in our experiment. The experimental statistics shows that the structure of the control system was accessible and effective.

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