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2011 10th International Symposium on Parallel and Distributed Computing, ISPDC 2011

作者： Voros, András Szabo, Tamás Jámbor, Attila Darvas, Dániel Horváth, Akos Bartha, Tamás Department of Measurement and Information Systems Budapest University of Technology and Economics Budapest Hungary Computer and Automation Research Institute MTA SZTAKI Budapest Hungary

ISBN: (纸本)9780769545400

Formal verification is becoming a fundamental step of safety-critical and model-based software development. As part of the verification process, model checking is one of the current advanced techniques to analyze the behavior of a system. In this paper, we examine an existing parallel model checking algorithm and we propose improvements to eliminate some computational bottlenecks. Our measurements show that the resulting new algorithm has better scalability and performance than both the former parallel approach and the sequential algorithm. © 2011 IEEE.

关键词： Petri nets

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Single voice command recognition by finite element analysis 13

Single voice command recognition by finite element analysis

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13th International Conference on information Technology Based Higher Education and Training, ITHET 2014

作者： Todorov, T.D. Tsanev, G.S. Yordanov, S.Y. Department of Mathematics Technical University Gabrovo Bulgaria Department of Computer Systems and Technology Technical University Gabrovo Bulgaria Department of Automation Information and Control Systems Technical University Gabrovo Bulgaria

ISBN: (纸本)9781467367301

The paper deals with voice recognition systems. A new finite element signal processing method is obtained. Each input signal is processed by a particular frequency. Most authors analyse the cepstral coefficients in their classifiers. The logarithmic energy vector is used for recognising the input signal in the present paper. A new finite element criteria for closeness between voice commands and preliminary stored patterns is introduced. For this purpose a new Quasi-Hermite interpolation operator is obtained. The new ideas are computer implemented. Real life tests supporting the considered theory have been carried out. © 2014 IEEE.

关键词： Finite element method

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TDDet: A novel lightweight and efficient tea disease detector

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computers and Electronics in Agriculture 2025年 237卷

作者： Yange Sun Zhihao Li Huaping Guo Yan Feng Yongqiang Tang Wensheng Zhang Jingqiu Gu School of Computer and Information Technology Xinyang Normal University Xinyang 464000 China Henan Key Laboratory of Tea Plant Biology Xinyang Normal University Xinyang 464000 China State Key Laboratory of Multimodal Artificial Intelligence Systems Institute of Automation Chinese Academy of Sciences Beijing 100190 China National Engineering Research Center for Information Technology in Agriculture Beijing 100097 China

Tea diseases cause significant economic losses to the tea industry every year, and thus developing a rapid and accurate tea disease detector is of great significance for assisting farmers in preventing diseases and increasing their income. Therefore, this paper proposes a lightweight and efficient detector called TDDet to quickly and accurately detect tea diseases. TDDet is mainly composed of two key innovations: feature extraction and feature aggregation. For feature extraction, we use lightweight depthwise separable convolution to reduce the computational load and enhance the ability to extract key local features in images of tea diseases. In addition, attention mechanisms including channel-, spatial-, and self-attentions, are employed to enable the model to focus on the most important parts of tea diseases, thereby improving the performance of the model. For feature aggregation, we propose a novel Cross-scale Feature Fusion (CFF) module to focus on tea disease areas, boosting the model’s sensitivity to feature details. Based on CFF, TDDet repeatedly fuses multiscale features of different levels in a top-down and bottom-up manner, enhancing feature representation capability. Besides, a lightweight and efficient upsampling module, called Dysample, is used to reduce computational costs and improve model performance by dynamically adjusting the sampling rate of feature maps. Experimental results demonstrate that TDDet with fewer parameters outperforms other state-of-the-art object detection models, enabling fast and accurate identification of tea diseases. Our code and dataset are available at https://***/hpguo1982/TDDet .

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Automating CPPSs Analyses with SysML v2 and Lingua Franca in the Context of Industry 4.0 50

Automating CPPSs Analyses with SysML v2 and Lingua Franca in...

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50th Annual Conference of the IEEE Industrial Electronics Society, IECON 2024

作者： Gaiardelli, Sebastiano Wilch, Jan Fummi, Franco Vogel-Heuser, Birgit Industrial Computer Engineering Laboratory Department of Engineering for Innovation Medicine University of Verona Italy Institute of Automation and Information Systems Technical University of Munich Germany

ISBN: (纸本)9781665464543

The design of manufacturing systems requires exploring diverse component configurations for one that best satisfies the requirements of the target system. At the same time, manufacturing systems evolve continuously, increasing their complexity and that of the production line in which they are installed. Model-based System Engineering (MBSE) methodologies and modeling languages like System Modeling Language (SysML) are used to assist system engineers during the entire design process. Yet, MBSE methodologies mainly rely on manually composed models for requirements verification, incurring enormous cost and effort especially in larger, more complex systems. This paper proposes a methodology exploiting the knowledge enclosed in a SysML model to automate the execution of a set of analyses defined over the represented manufacturing system. The proposed approach relies on Lingua Franca (LF) to simulate the specified analysis and analyze the results. Moreover, the methodology supports chains of analyses to represent dependent requirements and tradeoffs imposed upon a manufacturing system. The proposed methodology has been evaluated on a manufacturing system demonstrator. Results show the proposed methodology’s applicability and scalability on diverse configurations of the manufacturing system. © 2024 IEEE.

关键词： Smart manufacturing

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Bounded saturation based CTL model checking

Bounded saturation based CTL model checking

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12th Symposium on Programming Languages and Software Tools, SPLST 2011

作者： Vörös, András Darvas, Dániel Bartha, Tamás Dept. of Measurement and Information Systems Budapest University of Technology and Economics Budapest Hungary Computer and Automation Research Institute MTA SZTAKI Budapest Hungary

ISBN: (纸本)9789949231782

Formal verification is becoming a fundamental step of safety-critical and model-based software development. As part of the verification process, model checking is one of the current advanced techniques to analyse the behaviour of a system. In this paper, we examine how the combination of two advanced model checking algorithms - namely bounded saturation and saturation based structural model checking - can be used to verify systems. Our work is the first attempt to combine these approaches, and this way we are able to handle and examine complex or even infinite state systems.

关键词： Model checking

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Fusing R Features and Local Features with Context-Aware Kernels for Action Recognition

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International Journal of computer Vision 2016年第2期118卷 151-171页

作者： Yuan, Chunfeng Wu, Baoxin Li, Xi Hu, Weiming Maybank, Stephen Wang, Fangshi National Laboratory of Pattern Recognition Institute of Automation CAS Beijing China College of Computer Science and Technology Zhejiang University Hangzhou China Department of Computer Science and Information Systems Birkbeck College London United Kingdom School of Software Engineering Beijing Jiaotong University Beijing China

The performance of action recognition in video sequences depends significantly on the representation of actions and the similarity measurement between the representations. In this paper, we combine two kinds of features extracted from the spatio-temporal interest points with context-aware kernels for action recognition. For the action representation, local cuboid features extracted around interest points are very popular using a Bag of Visual Words (BOVW) model. Such representations, however, ignore potentially valuable information about the global spatio-temporal distribution of interest points. We propose a new global feature to capture the detailed geometrical distribution of interest points. It is calculated by using the 3D R transform which is defined as an extended 3D discrete Radon transform, followed by the application of a two-directional two-dimensional principal component analysis. For the similarity measurement, we model a video set as an optimized probabilistic hypergraph and propose a context-aware kernel to measure high order relationships among videos. The context-aware kernel is more robust to the noise and outliers in the data than the traditional context-free kernel which just considers the pairwise relationships between videos. The hyperedges of the hypergraph are constructed based on a learnt Mahalanobis distance metric. Any disturbing information from other classes is excluded from each hyperedge. Finally, a multiple kernel learning algorithm is designed by integrating the l2 norm regularization into a linear SVM classifier to fuse the R feature and the BOVW representation for action recognition. Experimental results on several datasets demonstrate the effectiveness of the proposed approach for action recognition. © 2015, Springer Science+Business Media New York.

关键词： Principal component analysis

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Online Optimal Control for VTOL Aircraft System Based on DHP Algorithm 33

Online Optimal Control for VTOL Aircraft System Based on DHP...

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第三十三届中国控制会议

作者： TAN Fuxiao LIU Derong GUAN Xinping The School of Computer and Information Fuyang Teachers College The State Key Laboratory of Management and Control for Complex Systems Institute of Automation Chinese Academy of Sciences The School of Electronic Information and Electrical Engineering Shanghai Jiao Tong University

ISBN: (纸本)9781479947249

It is well known that vertical take-off and landing(VTOL) aircraft system is a complex multi-variable nonlinear system with large disturbances. In order to control the VTOL aircraft system ef ciently, it is necessary to explore new optimal control methods to stabilize the system states. In this paper, we apply dual heuristic programming(DHP) to design the optimal controller for VTOL aircraft system. As a framework of approximate dynamic programming(ADP) algorithm, DHP consists of three modules: model, critic and actor. The critic module output partial derivatives of cost function with respect to state. It has many advantages such as good dynamics, fast convergence rate, and high control resolution. Simulation and experimental results demonstrate the effectiveness of optimal controller for VTOL aircraft system based on the DHP algorithm.

关键词： VTOL aircraft,Dual heuristic programming,Adaptive critic designs,Optimal control

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On the reconfiguration of degradable VLSI/WSI arrays

On the reconfiguration of degradable VLSI/WSI arrays

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IEEE International Workshop on Defect and Fault Tolerance in VLSI systems, DFT 1993

作者： Low, C.P. Leong, H.W. Algorithms and Design Automation Laboratory Department of Information Systems and Computer Science National University of Singapore Lower Kent Ridge Road Singapore0511 Singapore

ISBN: (纸本)0818635029

This paper consider the problem of reconfiguring VLSI/WSI arrays via the degradation approach. In this approach, all elements are treated uniformly and no elements are dedicated as spares. The goal is to derive a fault-free subarray T from the defective host array such that the dimensions of T are larger than some specified minimum. This problem has been shown to be NP-complete under various switching and routing constraints. However, we show that a special case of the reconfiguration problem with row bypass and column rerouting capabilities, is solvable in polynomial time using network flows. Using this result, a new fast and efficient reconfiguration algorithm is proposed. Empirical study shows that the new algorithm indeed produce good results in terms of the percentages of harvest and degradation of VLSI/WSI arrays. © 1993 IEEE.

关键词： Polynomial approximation

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Extensions to the CEGAR approach on petri nets 13

Extensions to the CEGAR approach on petri nets

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13th Symposium on Programming Languages and Software Tools, SPLST 2013

作者： Hajdu, Ákos Vörös, András Bartha, Támas Mártonka, Zoltán Dept. of Measurement and Information Systems Budapest University of Technology and Economics Budapest Hungary Computer and Automation Research Institute MTA SZTAKI Budapest Hungary

ISBN: (纸本)9789633062289

Formal verification is becoming more prevalent and often compulsory in the safety-critical system and software development processes. Reachability analysis can provide information about safety and invariant properties of the developed system. However, checking the reachability is a computationally hard problem, especially in the case of asynchronous or infinite state systems. Petri nets are widely used for the modeling and verification of such systems. In this paper we examine a recently published approach for the reachability checking of Petri net markings. We give proofs concerning the completeness and the correctness properties of the algorithm, and we introduce algorithmic improvements. We also extend the algorithm to handle new classes of problems: submarking coverability and reachability of Petri nets with inhibitor arcs.

关键词： Petri nets

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Efficient saturation-based bounded model checking of asynchronous systems 13

Efficient saturation-based bounded model checking of asynchr...

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13th Symposium on Programming Languages and Software Tools, SPLST 2013

作者： Darvas, Dániel Vörös, András Bartha, Támas Dept. of Measurement and Information Systems Budapest University of Technology and Economics Budapest Hungary Computer and Automation Research Institute MTA SZTAKI Budapest Hungary

ISBN: (纸本)9789633062289

Formal verification is becoming a fundamental step in assuring the correctness of safety-critical systems. Since these systems are often asynchronous and even distributed, their verification necessitates methods that can deal with huge or even infinite state spaces. Model checking is one of the current techniques to analyse the behaviour of systems, as part of the verification process. The so-called saturation algorithm has an efficient iteration strategy combined with symbolic data structures, providing a powerful state space generation and model checking solution for asynchronous systems. In this paper we present the first approach to integrate two advanced saturation algorithms-namely bounded saturation and constrained saturation-based structural model checking-in order to improve on previous methods. Bounded saturation utilizes the efficiency of saturation in bounded state space exploration. Constrained saturation is an efficient structural model checking algorithm. Our measurements confirm that the new approach does not only offer a solution to deal with even infinite state spaces, but in many cases it even outperforms the original methods.

关键词： Model checking

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