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Sparse Learning of Markovian Population Models in Random Environments 随机环境下马尔可夫种群模型的稀疏学习
IFAC Proceedings Volumes Pub Date : 2014-01-16 DOI: 10.3929/ETHZ-A-010362110
C. Zechner, Federico Wadehn, H. Koeppl
{"title":"Sparse Learning of Markovian Population Models in Random Environments","authors":"C. Zechner, Federico Wadehn, H. Koeppl","doi":"10.3929/ETHZ-A-010362110","DOIUrl":"https://doi.org/10.3929/ETHZ-A-010362110","url":null,"abstract":"Markovian population models are suitable abstractions to describe well-mixed interacting particle systems in situation where stochastic fluctuations are significant due to the involvement of low copy particles. In molecular biology, measurements on the single-cell level attest to this stochasticity and one is tempted to interpret such measurements across an isogenic cell population as different sample paths of one and the same Markov model. Over recent years evidence built up against this interpretation due to the presence of cell-to-cell variability stemming from factors other than intrinsic fluctuations. To account for this extrinsic variability, Markovian models in random environments need to be considered and a key emerging question is how to perform inference for such models. We model extrinsic variability by a random parametrization of all propensity functions. To detect which of those propensities have significant variability, we lay out a sparse learning procedure captured by a hierarchical Bayesian model whose evidence function is iteratively maximized using a variational Bayesian expectation-maximization algorithm.","PeriodicalId":13260,"journal":{"name":"IFAC Proceedings Volumes","volume":"14 1","pages":"1723-1728"},"PeriodicalIF":0.0,"publicationDate":"2014-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75908321","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Detectability in Stochastic Discrete Event Systems 随机离散事件系统的可检测性
IFAC Proceedings Volumes Pub Date : 2014-01-01 Epub Date: 2014-07-25 DOI: 10.3182/20140514-3-FR-4046.00067
Christoforos Keroglou , Christoforos N. Hadjicostis
{"title":"Detectability in Stochastic Discrete Event Systems","authors":"Christoforos Keroglou ,&nbsp;Christoforos N. Hadjicostis","doi":"10.3182/20140514-3-FR-4046.00067","DOIUrl":"https://doi.org/10.3182/20140514-3-FR-4046.00067","url":null,"abstract":"<div><p>In this paper we define and analyze notions of detectability in stochastic discrete event systems (SDES). More specifically, we introduce the notions of A-detectability and AA-detectability which focus on characterizing our ability to estimate the true current state of a given SDES with increasing certainty as we observe more output symbols. We discuss observer-based techniques that can be used to verify A-detectability, and provide associated necessary and sufficient conditions for this property to hold. We also present and discuss the notion of AA-detectability, which encompasses a broader class of SDES than A-detectability. Our approach is differentiated from the existing notion of stochastic detectability because it takes into account the probability of problematic observation sequences (that do not allow us to perfectly know the system state), whereas stochastic detectability considers each observation sequence that can be generated by the underlying system even if this observation sequence can only be generated with very small probability. The notions of A- and AA-detectability that are introduced are inspired by combining existing notions for detectability in deterministic discrete event systems and diagnosability in SDES.</p></div>","PeriodicalId":13260,"journal":{"name":"IFAC Proceedings Volumes","volume":"47 2","pages":"Pages 27-32"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3182/20140514-3-FR-4046.00067","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138180114","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
On Networked Evolutionary Games Part 1: Formulation 论网络进化博弈第1部分:公式
IFAC Proceedings Volumes Pub Date : 2014-01-01 Epub Date: 2014-10-08 DOI: 10.3182/20140824-6-ZA-1003.01461
Hongsheng Qi , Daizhan Cheng , Hairong Dong
{"title":"On Networked Evolutionary Games Part 1: Formulation","authors":"Hongsheng Qi ,&nbsp;Daizhan Cheng ,&nbsp;Hairong Dong","doi":"10.3182/20140824-6-ZA-1003.01461","DOIUrl":"10.3182/20140824-6-ZA-1003.01461","url":null,"abstract":"<div><p>This paper presents a comprehensive modeling technique for networked evolutionary games (NEG). Three kinds of network graphs are considered, which are (i) undirected graph for symmetric games; (ii) directed graph for asymmetric games, and (iii) d-directed graph for symmetric games with partial neighborhood information. Three kinds of fundamental evolutionary games (FEGs) are discussed, which are (i) two strategies and symmetric <em>(S-2);</em> (ii) two strategies and asymmetric <em>(A-2);</em> and (iii) three strategies and symmetric <em>(S-3).</em> Three strategy updating rules (SUR) are introduced, which are (i) Unconditional Imitation (UI); (ii) Fermi Rule (FR); (iii) Myopic Best Response Adjustment Rule (MBRA). Then we review the fundamental evolutionary equation (FEE), and give the detailed formulation for different models. Finally, the network profile dynamics (NPD) of NEGs are investigated via their FEE.</p></div>","PeriodicalId":13260,"journal":{"name":"IFAC Proceedings Volumes","volume":"47 3","pages":"Pages 275-280"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3182/20140824-6-ZA-1003.01461","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79194443","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Multi-Model Adaptive Regulation for a Family of Systems Containing Different Zero Structures 一类含不同零结构系统的多模型自适应调节
IFAC Proceedings Volumes Pub Date : 2014-01-01 Epub Date: 2014-10-08 DOI: 10.3182/20140824-6-ZA-1003.01867
Eric Peterson, Harry G. Kwatny
{"title":"Multi-Model Adaptive Regulation for a Family of Systems Containing Different Zero Structures","authors":"Eric Peterson,&nbsp;Harry G. Kwatny","doi":"10.3182/20140824-6-ZA-1003.01867","DOIUrl":"10.3182/20140824-6-ZA-1003.01867","url":null,"abstract":"<div><p>An adaptive regulator is proposed for parameter dependent families of linear systems subject to changes in the zero structure. Adaptation is required for the parameter dependent family of plants but continuous adaptive regulation is limited by relative degree and right half plane zeros. A form of adaptive regulation is presented that accommodates parameter induced changes in the zero structure. The conditions for regulation divide the parameter space into disjoint sets thereby defining subfamilies of plants. These plant subfamilies guide controller design. Controller stability is guaranteed by Linear Matrix Inequalities (LMI) and a switch logic based on Lyapunov functions.</p></div>","PeriodicalId":13260,"journal":{"name":"IFAC Proceedings Volumes","volume":"47 3","pages":"Pages 389-394"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3182/20140824-6-ZA-1003.01867","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89222274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Building Temperature Control by Simple MPC-like Feedback Laws Learned from Closed-Loop Data 基于闭环数据的简单类mpc反馈律的建筑温度控制
IFAC Proceedings Volumes Pub Date : 2014-01-01 Epub Date: 2014-10-08 DOI: 10.3182/20140824-6-ZA-1003.01633
Martin Klaučo , Ján Drgoňa , Michal Kvasnica , Stefano Di Cairano
{"title":"Building Temperature Control by Simple MPC-like Feedback Laws Learned from Closed-Loop Data","authors":"Martin Klaučo ,&nbsp;Ján Drgoňa ,&nbsp;Michal Kvasnica ,&nbsp;Stefano Di Cairano","doi":"10.3182/20140824-6-ZA-1003.01633","DOIUrl":"10.3182/20140824-6-ZA-1003.01633","url":null,"abstract":"<div><p>We show how to synthesize simple, yet well-performing feedback strategies that mimic the behavior of optimization-based controllers, such as those based on model predictive control (MPC). The approach is based on employing regression trees to derive dependence of real-valued control inputs on measurements. Quality of classical regression policies is improved by finding, simultaneously, optimal affine splits and optimal local affine regressors. We furthermore illustrate how to refine the local regressors such that the overal feedback strategy guarantees satisfaction of input constraints. The main advantage of the proposed regression-based control strategy stems from its fast implementation even on very simple hardware. The approach is demonstrated on a case study that assumes control of temperature in a one-zone building. Here, the data used in the learning process are generated by MPC. We show that the simple feedback law attains almost the same level of performance as the complex MPC controller.</p></div>","PeriodicalId":13260,"journal":{"name":"IFAC Proceedings Volumes","volume":"47 3","pages":"Pages 581-586"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3182/20140824-6-ZA-1003.01633","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85250590","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 16
An Observer with Measurement-triggered Jumps for Linear Systems with Known Input 已知输入线性系统的测量触发跳变观测器
IFAC Proceedings Volumes Pub Date : 2014-01-01 Epub Date: 2014-10-08 DOI: 10.3182/20140824-6-ZA-1003.01354
F. Ferrante , F. Gouaisbaut , R.G. Sanfelice , S. Tarbouriech
{"title":"An Observer with Measurement-triggered Jumps for Linear Systems with Known Input","authors":"F. Ferrante ,&nbsp;F. Gouaisbaut ,&nbsp;R.G. Sanfelice ,&nbsp;S. Tarbouriech","doi":"10.3182/20140824-6-ZA-1003.01354","DOIUrl":"10.3182/20140824-6-ZA-1003.01354","url":null,"abstract":"<div><p>This paper deals with the estimation of the state of linear time invariant systems for which measurements of the output are available sporadically. An observer with jumps triggered by the arrival of such measurements is proposed and studied in a hybrid systems framework. The resulting system is written in estimation error coordinates and augmented with a timer variable that triggers the event of new measurements arriving. The design of the observer is performed to achieve uniform global asymptotic stability (UGAS) of a closed set including the points for which the state of the plant and its estimate coincide. Furthermore, a computationally tractable design procedure for the proposed observer is presented and illustrated in an example.</p></div>","PeriodicalId":13260,"journal":{"name":"IFAC Proceedings Volumes","volume":"47 3","pages":"Pages 140-145"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3182/20140824-6-ZA-1003.01354","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85844019","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 22
Causality phenomenon and Compromise Technique for Predictive Control of Timed Event Graphs with Specifications Defined by P-time Event Graphs p时间事件图定义规范的时间事件图预测控制的因果现象及折衷技术
IFAC Proceedings Volumes Pub Date : 2014-01-01 Epub Date: 2014-07-25 DOI: 10.3182/20140514-3-FR-4046.00045
Philippe Declerck
{"title":"Causality phenomenon and Compromise Technique for Predictive Control of Timed Event Graphs with Specifications Defined by P-time Event Graphs","authors":"Philippe Declerck","doi":"10.3182/20140514-3-FR-4046.00045","DOIUrl":"https://doi.org/10.3182/20140514-3-FR-4046.00045","url":null,"abstract":"<div><p>An imperative condition of operation in Predictive Control is that a control must be applied after the end of its calculation. In this paper, we analyze and formalize this causality phenomenon which depends on both the computer time and the control problem. Two techniques are proposed. When the causality forbids the complete convergence of the algorithm, we propose a compromise technique which needs the analysis of the partial satisfaction of the specifications at each iteration of the algorithm. The plant is described by a Timed Event Graph while the specifications are defined by a P-time Event Graph.</p></div>","PeriodicalId":13260,"journal":{"name":"IFAC Proceedings Volumes","volume":"47 2","pages":"Pages 99-104"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3182/20140514-3-FR-4046.00045","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138179791","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Hybrid Synchronization of Lu and Bhalekar-Gejji Chaotic Systems Using Nonlinear Active Control 基于非线性主动控制的Lu和Bhalekar-Gejji混沌系统混合同步
IFAC Proceedings Volumes Pub Date : 2014-01-01 Epub Date: 2014-04-04 DOI: 10.3182/20140313-3-IN-3024.00069
Jay Prakash Singh , Piyush Pratap Singh , B.K. Roy
{"title":"Hybrid Synchronization of Lu and Bhalekar-Gejji Chaotic Systems Using Nonlinear Active Control","authors":"Jay Prakash Singh ,&nbsp;Piyush Pratap Singh ,&nbsp;B.K. Roy","doi":"10.3182/20140313-3-IN-3024.00069","DOIUrl":"10.3182/20140313-3-IN-3024.00069","url":null,"abstract":"<div><p>Hybrid synchronization based on the active control theory between two different chaotic systems, i.e. Lu and Bhalekar-Gejji is reported in this paper. Lu chaotic system is taken as master and Bhalekar-Gejji chaotic system as slave. Stabilization of error dynamics is achieved by satisfying the Lyapunov stability conditions. Control is designed by using the relevant variables of master and slave systems. Simulation is presented for verification of proposed scheme.</p></div>","PeriodicalId":13260,"journal":{"name":"IFAC Proceedings Volumes","volume":"47 1","pages":"Pages 292-296"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3182/20140313-3-IN-3024.00069","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90949371","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
Nonlinear observer and controller design for sensorless operation of a continuously rotating energy harvester 连续旋转能量采集器无传感器运行非线性观测器和控制器设计
IFAC Proceedings Volumes Pub Date : 2014-01-01 Epub Date: 2014-10-08 DOI: 10.3182/20140824-6-ZA-1003.02214
K. Nunna , T.T. Toh , P.D. Mitcheson , A. Astolfi
{"title":"Nonlinear observer and controller design for sensorless operation of a continuously rotating energy harvester","authors":"K. Nunna ,&nbsp;T.T. Toh ,&nbsp;P.D. Mitcheson ,&nbsp;A. Astolfi","doi":"10.3182/20140824-6-ZA-1003.02214","DOIUrl":"10.3182/20140824-6-ZA-1003.02214","url":null,"abstract":"<div><p>This paper presents the design of a nonlinear observer and a nonlinear feedback controller for sensorless operation of a continuously rotating energy harvester. A mathematical model of the harvester with its power electronic interface is discussed. This model is used to design an observer that estimates the mechanical quantities from the measured electrical quantities. The gains of the observer depend on the solution of a modified Riccati equation. The estimated mechanical quantities are used in a control law that sustains power generation across a range of source rotation speeds. The proposed scheme is assessed through simulations and experiments.</p></div>","PeriodicalId":13260,"journal":{"name":"IFAC Proceedings Volumes","volume":"47 3","pages":"Pages 55-60"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3182/20140824-6-ZA-1003.02214","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78383907","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Review of Five Sets of Piecewise Constant Orthogonal Functions for Function Approximation, Integration and Solution of First Order Differential Equation Using These Function Sets 五组分段常数正交函数在函数逼近、积分及一阶微分方程求解中的应用综述
IFAC Proceedings Volumes Pub Date : 2014-01-01 Epub Date: 2014-04-04 DOI: 10.3182/20140313-3-IN-3024.00176
A. Ganguly , H. Basu
{"title":"Review of Five Sets of Piecewise Constant Orthogonal Functions for Function Approximation, Integration and Solution of First Order Differential Equation Using These Function Sets","authors":"A. Ganguly ,&nbsp;H. Basu","doi":"10.3182/20140313-3-IN-3024.00176","DOIUrl":"10.3182/20140313-3-IN-3024.00176","url":null,"abstract":"<div><p>This paper reviews five types of piecewise constant orthogonal functions namely Walsh, block-pulse, sample-and-hold, triangular and hybrid functions. Approximation, integration of the functions are performed and compared with the actual result. By performing integration we get the operational matrix for each individual function set. With the help of integration operational matrices we can solve an nth order differential equation which is of importance for solving control engineering problems although a first order ordinary differential equation has been dealt with in this paper.</p></div>","PeriodicalId":13260,"journal":{"name":"IFAC Proceedings Volumes","volume":"47 1","pages":"Pages 386-393"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3182/20140313-3-IN-3024.00176","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74074055","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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