Дисертації з теми "Multiple robustness"
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Miller, Charles W. "Familywise Robustness Criteria Revisited for Newer Multiple Testing Procedures." Diss., Temple University Libraries, 2009. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/40501.
Повний текст джерелаPh.D.
As the availability of large datasets becomes more prevalent, so does the need to discover significant findings among a large collection of hypotheses. Multiple testing procedures (MTP) are used to control the familywise error rate (FWER) or the chance to commit at least one type I error when performing multiple hypotheses testing. When controlling the FWER, the power of a MTP to detect significant differences decreases as the number of hypotheses increases. It would be ideal to discover the same false null hypotheses despite the family of hypotheses chosen to be tested. Holland and Cheung (2002) developed measures called familywise robustness criteria (FWR) to study the effect of family size on the acceptance and rejection of a hypothesis. Their analysis focused on procedures that controlled FWER and false discovery rate (FDR). Newer MTPs have since been developed which control the generalized FWER (gFWER (k) or k-FWER) and false discovery proportion (FDP) or tail probabilities for the proportion of false positives (TPPFP). This dissertation reviews these newer procedures and then discusses the effect of family size using the FWRs of Holland and Cheung. In the case where the test statistics are independent and the null hypotheses are all true, the Type R enlargement familywise robustness measure can be expressed as a ratio of the expected number of Type I errors. In simulations, positive dependence among the test statistics was introduced, the expected number of Type I errors and the Type R enlargement FWR increased for step-up procedures with higher levels of correlation, but not for step-down or single-step procedures.
Temple University--Theses
Gu, Wei. "Robustness against interference in Internet of Things." Thesis, Lille 1, 2012. http://www.theses.fr/2012LIL10195/document.
Повний текст джерелаInternet of Things brought great interests in recent years for its attractive applications and intelligent structure. However, the implementation of sensor networks still presents important challenges such as the generation of Multiple-Access-Interference (MAI) with impulsive nature and the relatively high energy consumption. Both the MAI and the thermal noise should be considered due to their strong impairments each may cause on the communication quality. We employ the stable and Gaussian distributions to model the MAI and the thermal noise respectively. Firstly we study the performance of turbo codes in the direct link and we propose the p-norm as a decoding metric. This metric allows a considerable error correction performance improvement which is close to the optimal decoder. Then we investigate cooperative communications. The probability densities in the decision statistic of the optimal receiver are estimated using importance sampling approach when both the stable and Gaussian noises are present. Such a method is computationally expensive. Hence we develop an approximation approach based on the Normal Inverse Gaussian (NIG) distribution. This solution is efficient for calculation and is proximate to the optimal receiver. In addition we show that the p-norm receiver has robust performance no matter what kind of noise is dominant. At last we combine the channel coding and cooperative communication works to establish a distributed channel coding strategy. Through some simulation assessments, the energy saving strategy can be realized by choosing an appropriate distributed channel coding scheme based on the direct link quality and target bit error rate
Sandsveden, Li. "Evaluation of the Robustness of the Brain Parenchymal Fraction for Brain Atrophy Measurements." Thesis, Linköpings universitet, Medicinsk informatik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-105801.
Повний текст джерелаManzano, Castro Marc. "New robustness evaluation mechanism for complex networks." Doctoral thesis, Universitat de Girona, 2014. http://hdl.handle.net/10803/295713.
Повний текст джерелаLa ciència de les xarxes (o network science) ha avançat significativament en l'última dècada, proporcionant coneixement sobre l'estructura subjacent i la dinàmica de les xarxes complexes (o complex networks). Infraestructures crítiques com xarxes de telecomunicacions, juguen un paper fonamental per garantir el bon funcionament de la vida moderna. Aquestes xarxes han de lidiar constantment amb fallades dels seus components. En escenaris de fallades múltiples, on els esquemes de protecció i restauració tradicionals no són adequats degut a la gran quantitat de recursos que serien necessaris, el concepte de robustesa (o robustness) s'utilitza per tal de quantificar com de bona és una xarxa quan es produeix una fallada a gran escala. L'objectiu d'aquesta tesi és, en primer lloc, investigar les amenaces actuals de les xarxes d'avui en dia que poden portar a escenaris de fallades múltiples i, en segon lloc, proposar nous indicadors capaços de quantificar la robustesa d'aquestes xarxes.
Zhang, Yao. "Load Frequency Control of Multiple-Area Power Systems." Cleveland State University / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=csu1250196894.
Повний текст джерелаJoo, Seang-Hwane. "Robustness of the Within- and Between-Series Estimators to Non-Normal Multiple-Baseline Studies: A Monte Carlo Study." Scholar Commons, 2017. http://scholarcommons.usf.edu/etd/6715.
Повний текст джерелаLiang, Xiyin. "Security and robustness of a modified parameter modulation communication scheme." Thesis, Pretoria : [s.n.], 2009. http://upetd.up.ac.za/thesis/available/etd-04072009-204834/.
Повний текст джерелаXu, Guoqing. "Assessment of risk of disproportionate collapse of steel building structures exposed to multiple hazards." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/41079.
Повний текст джерелаHajian-Tilaki, Karimollah. "Methodologic contributions to ROC analysis : a study of the robustness of the binormal model for quantitative data and methods for studies involving multiple signals." Thesis, McGill University, 1995. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=29034.
Повний текст джерелаMetz et al (1990) adapted the binormal model, used previously for rating data only, for ROC analysis of quantitative diagnostic tests. Their investigation of its performance was limited to data generated from the bi-normal model itself. Part (i) of this thesis describes a broader numerical investigation to assess how it performs in various configurations of non-binormal pairs of distributions, where one or both pair members were mixtures of Gaussian (MG) distributions. We also investigated the effects of sample size and the number of data categories used. Three criteria, bias in estimates of the area under the curve (AUC), bias in estimated true positive fraction (TPF's) at specific false positive fraction (FPF) points, and discrepancies between the estimated and true TPF over the wider portion of the ROC curve, were used to assess the impact of departures from binormality. The bias in the estimates of AUC was small for all configurations studied, no matter what amount of discretization and what sample sizes were used. By the other criteria, the binormal model was robust to departures involving $ {$G, MG--skewed or bimodal$ }$ pairs. The fits were less appropriate at FPF = 0.05 and 0.10 when both pair-members were skewed to the right, but even then the bias in estimates of TPF was less than 0.06. The "semi-parametric" and nonparametric approaches yielded very similar estimates of AUC and of the corresponding sampling variability.
Part (ii) develops nonparametric ROC analysis for the situation when pathology and test interpretation data for each patient are K-dimensional. The approach computes K "pseudo-accuracies" for each patient; from these, K U-statistics are derived. One can form a summary index from these K components, as well as the standard error (SE) of this index based on the observed correlations among the pseudo-accuracies. The applicability of a simplified formula for the SE was assessed. The method was also extended to comparisons of two diagnostic systems. The procedures are illustrated using data sets from two clinical studies. The approach can handle the complex structure of multi-signal ROC data; it takes the various inter-correlations into account, and makes efficient use of the data.
Nair, Suraj [Verfasser], Alois [Akademischer Betreuer] Knoll, and Dieter [Akademischer Betreuer] Fox. "Visual Tracking of Multiple Humans with Machine Learning based Robustness Enhancement applied to Real-World Robotic Systems / Suraj Nair. Gutachter: Alois Knoll ; Dieter Fox. Betreuer: Alois Knoll." München : Universitätsbibliothek der TU München, 2012. http://d-nb.info/1031076166/34.
Повний текст джерелаZáchej, Samuel. "Monte Carlo simulace elektronového rozptylu v rastrovacím prozařovacím elektronovém mikroskopu." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2016. http://www.nusl.cz/ntk/nusl-242036.
Повний текст джерелаSeitz, Timothy M. "Modeling and Robust Stability of Advanced, Distributed Control Systems." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1497201155817062.
Повний текст джерелаCoutinho, Flávio Luiz. "Um sistema de rastreamento de olhar tolerante a movimentações da face." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/45/45134/tde-04012012-122544/.
Повний текст джерелаRecent advances in computing power and the proliferation of computing devices around us allowed the development of new computer interfaces which can react to the presence and state of its users. Since gaze can transmit a lot of information about the user, gaze trackers, devices that can estimate the direction which a person is looking at, have an important role in the development of such interfaces. Among gaze tracking applications, we have aid for people with limited motor skills, human behavior studies, and the development of interfaces that can take gaze information as an additional communication channel with the user. Lots of techniques have been developed to reach this goal, but they have some problems that make them hard to be widely used. These problems are the need of calibration for each use session and the need to keep the user\'s head still. In this work we studied some of the existing gaze tracking techniques, from the more traditional ones to more recent ones. One of the most interesting techniques makes use of multiple light sources fixed at the monitor\'s corners. By analyzing the positions of corneal reflections and the pupil present in captured images of the eye, it is possible to estimate the gaze point on the monitor screen. Due to its advantages this technique was chosen for a deeper study and implementation. Lots of experiments using simulated data have been carried out to validate the technique. Using a more accurate model of the eye, an extension for this technique was also developed to increase its precision. Finally, we present our implementation, that allows for large head movement, as well as test results obtained from real users.
Issury, Irwin. "Contribution au développement d'une stratégie de diagnostic global en fonction des diagnostiqueurs locaux : Application à une mission spatiale." Phd thesis, Bordeaux 1, 2011. http://tel.archives-ouvertes.fr/tel-00643548.
Повний текст джерелаHaynes, Michele Ann. "Flexible distributions and statistical models in ranking and selection procedures with applications." Thesis, Queensland University of Technology, 1998.
Знайти повний текст джерелаPouilly-Cathelain, Maxime. "Synthèse de correcteurs s’adaptant à des critères multiples de haut niveau par la commande prédictive et les réseaux de neurones." Electronic Thesis or Diss., université Paris-Saclay, 2020. http://www.theses.fr/2020UPASG019.
Повний текст джерелаThis PhD thesis deals with the control of nonlinear systems subject to nondifferentiable or nonconvex constraints. The objective is to design a control law considering any type of constraints that can be online evaluated.To achieve this goal, model predictive control has been used in addition to barrier functions included in the cost function. A gradient-free optimization algorithm has been used to solve this optimization problem. Besides, a cost function formulation has been proposed to ensure stability and robustness against disturbances for linear systems. The proof of stability is based on invariant sets and the Lyapunov theory.In the case of nonlinear systems, dynamic neural networks have been used as a predictor for model predictive control. Machine learning algorithms and the nonlinear observers required for the use of neural networks have been studied. Finally, our study has focused on improving neural network prediction in the presence of disturbances.The synthesis method presented in this work has been applied to obstacle avoidance by an autonomous vehicle
"Some results on familywise robustness for multiple comparison procedures." 2005. http://library.cuhk.edu.hk/record=b5892700.
Повний текст джерелаThesis (M.Phil.)--Chinese University of Hong Kong, 2005.
Includes bibliographical references (leaves 46-48).
Abstracts in English and Chinese.
Abstract --- p.i
Acknowledgement --- p.iii
Chapter 1 --- Introduction --- p.1
Chapter 1.1 --- Multiple comparison procedures and their applications --- p.1
Chapter 1.2 --- Different types of error control --- p.3
Chapter 1.3 --- Single-step and stepwise procedures --- p.5
Chapter 1.4 --- From familywise error rate control to false discovery rate control --- p.8
Chapter 1.5 --- The FDR procedure of BH --- p.10
Chapter 1.6 --- Application of the FDR procedure --- p.11
Chapter 1.7 --- Family size and family size robustness --- p.16
Chapter 1.8 --- Objectives of the thesis --- p.17
Chapter 2 --- The Familywise Robustness Criteria --- p.18
Chapter 2.1 --- The basic idea of familywise robustness --- p.18
Chapter 2.2 --- Definitions and notations --- p.19
Chapter 2.3 --- The measurement of robustness to changing family size --- p.21
Chapter 2.4 --- Main Theorems --- p.21
Chapter 2.5 --- Example --- p.23
Chapter 2.6 --- Summary --- p.24
Chapter 3 --- FDR and FWR --- p.26
Chapter 3.1 --- Positive false discovery rate --- p.26
Chapter 3.2 --- A unified approach to FDR --- p.29
Chapter 3.3 --- The S procedure --- p.30
Chapter 3.4 --- Family wise robustness criteria and the S procedure --- p.32
Chapter 4 --- Simulation Study --- p.41
Chapter 4.1 --- The setup --- p.41
Chapter 4.2 --- Simulation result --- p.43
Chapter 4.3 --- Conclusions --- p.44
Bibliography --- p.46
Ribeiro, Filipe Luís Alves. "Robustness Analysis of Structures in Post-Earthquake Scenarios Considering Multiple Hazards." Doctoral thesis, 2017. http://hdl.handle.net/10362/20212.
Повний текст джерелаKim, Tae Yoon. "Rate-robustness tradeoffs in multicarrier wireless communications." Thesis, 2006. http://hdl.handle.net/2152/2919.
Повний текст джерела"Methodical Design Approaches to Multiple Node Collection Robustness for Flip-Flop Soft Error MItigation." Doctoral diss., 2015. http://hdl.handle.net/2286/R.I.29650.
Повний текст джерелаDissertation/Thesis
Doctoral Dissertation Electrical Engineering 2015
Ahn, Edwin S. "Addressing Stability Robustness, Period Uncertainties, and Startup of Multiple-Period Repetitive Control for Spacecraft Jitter Mitigation." Thesis, 2013. https://doi.org/10.7916/D8X63VBF.
Повний текст джерелаTsai, Zhi-Ren, and 蔡志仁. "Robustness Design of Fuzzy Control for Nonlinear Multiple Time-Delay Large-scale Systems via Neural-Network-Based Approach." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/97157702482637979986.
Повний текст джерела長庚大學
電機工程研究所
89
The stabilization problem is considered in this study for a nonlinear multiple time-delay large-scale system via neural-network (NN)-based approach. First, the NN model is first employed to approximate each nonlinear multiple time-delay subsystem. Then, a linear difference inclusion (LDI) state-space representation is established for the dynamics of each NN model. According to the LDI state-space representation, a robustness design of fuzzy control is proposed to overcome the effect of modeling errors between the nonlinear multiple time-delay subsystems and the NN models. In terms of Lyapunov's direct method, a delay-dependent stability criterion is hence derived to guarantee the asymptotic stability of nonlinear multiple time-delay large-scale systems. Subsequently, based on this criterion and the decentralized control scheme, a set of fuzzy controllers is synthesized to stabilize the nonlinear multiple time-delay large-scale system. Finally, a numerical example with simulations is given to illustrate the results.
Mahmoud, El Sayed. "An investigation of a novel analytic model for the fitness of a multiple classifier system." Thesis, 2012. http://hdl.handle.net/10214/4620.
Повний текст джерелаBenyamina, Djohara. "Conception des réseaux maillés sans fil à multiples-radios multiples-canaux." Thèse, 2010. http://hdl.handle.net/1866/4317.
Повний текст джерелаGenerally, network design problems consist of selecting links and vertices of a graph G so that a cost function is optimized and all constraints involving links and the vertices in G are met. A change in the criterion of optimization and/or the set of constraints leads to a new representation of a different problem. In this thesis, we consider the problem of designing infrastructure Wireless Mesh Networks (WMNs) where we show that the design of such networks becomes an optimization problem with multiple objectives instead of a standard optimization problem (a cost function is optimized) to take into account many aspects, often contradictory, but nevertheless essential in the reality. This thesis, composed of three parts, introduces new models and algorithms for designing WMNs from scratch. The first part is devoted to the simultaneous optimization of two equally important objectives: cost and network performance in terms of throughput. Three bi-objective models which differ mainly by the approach used to maximize network performance are proposed, solved and compared. The second part deals with the problem of gateways placement, given its impact on network performance and scalability. The concept of hop constraints is introduced into the network design to reduce the transmission delay. A novel algorithm based on a clustering approach is also proposed to find the strategic positions of gateways that support network scalability and increase its performance without significantly increasing the cost of installation. The final section addresses the problem of reliability in the presence of single failures. Allowing the installation of redundant components in the design phase can ensure reliable communications, but at the expense of cost and network performance. A new algorithm is developed based on the theoretical approach of "ear decomposition" to install the minimum number of additional routers to tolerate single failures. In order to solve the proposed models for real-size networks, an evolutionary algorithm (meta-heuristics), inspired from nature, is developed. Finally, the proposed models and methods have been evaluated through empirical and discrete events based simulations.
Michal, Victoire. "Estimation multi-robuste efficace en présence de données influentes." Thèse, 2019. http://hdl.handle.net/1866/22553.
Повний текст джерела