Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 278 for “"observability"”.
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Performance observability
Performance observability is the ability to accurately capture, analyze, and present (collectively observe) information about the performance of a computer system. Advances in computer systems design, particularly with respect to parallel processing and supercomputers, have brought a crisis in …
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Noise-Enabled Observability of Nonlinear Dynamic Systems Using the Empirical Observability Gramian
… actuation is well understood to influence the observability of nonlinear dynamical systems, actuation of nonlinear stochastic systems by process noise has received comparatively little attention in terms of the effects on observability. As noise is present in essentially all physically …
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Controllability, Observability and Realizability
… the control theory, including controllability, observability and realizability. In particular, we analyze the theory of and solutions to linear time systems, continuous and discrete time systems, time-varying systems, and first-order matrix Sylvester systems. Examples and sample computed …
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Tropical observability and predictability
… have focused on the mesoscale predictability and observability of the general tropical environment. This work constructs an ensemble data assimilation system for the tropics using a state of the science mesoscale prediction model, and tests the effect of a sparse observational network of wind and …
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Wage Growth and Worker Observability
… interacted with various measures of worker observability is used to provide an indication of the importance of worker observability in the growth of wages. I examine four potential measures of worker observability: firm size, occupation, industry, and worker-manager ratio. The results …
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Effects of observability on nonlinear filtering.
Massachusetts Institute of Technology. Dept. of Electrical Engineering. Thesis. 1970. M.S.
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Instrumenting Observability in a Decentralized Microservice Architecture
… systems organized and functioning efficiently. Observability is closely attached to ensuring this correct and effective system function. Without system monitoring, it is difficult to pinpoint when errors occur and correct them at their sources. Monitoring systems also helps to understand a …
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Computationally Efficient Reinforcement Learning under Partial Observability
… time for gamma-observable POMDPs, where gamma-observability is the assumption that c-well-separated distributions over the latent states induce (gamma*c)-well-separated distributions over observations. These are the first sub-exponential time planning and learning algorithms for POMDPs under …
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Observability and observer design for switched linear systems
… systems. This thesis also addresses the robust observability problem of computing the smallest structured perturbations to system matrices that causes observer infeasibility (with respect to the Frobenius norm). This robustness framework is sufficiently general to solve related robustness …
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Reasoning under partial observability in heterogeneous networked systems
… queries and evaluated soundly under partial observability. The same representation supports semantic minimization, allowing complex systems to be reduced to smaller models that preserve behaviors of interest. A prototype implementation demonstrates that conditional-table–based reasoning is …
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Minimal PMU placement for graph observability: a decomposition approach
This thesis explores the PMU placement problem, that is, the placement of a minimal number of Phase Measurement Units (PMUs) on the nodes of a power system graph such that the entire graph is observed. The NP-completeness of PMU placement for planar bipartite graphs is shown. PMU placement …
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Artificial intelligence in co-operative games with partial observability
… in co-operative games that feature Partial Observability. Most video games feature a combination of both co-operation, as well as Partial Observability. Co-operative games are games that feature a team of at least two agents, that must achieve a shared goal of some kind. Partial …
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Observability of Origin-Destination matrices for Dynamic Traffic Assignment
… that O-D estimation module is observable. Observability is defined as a property of the system by which it is possible to uniquely determine the (initial) state (O-D flows) of the system eventually by making regular indirect measurements of the state. In DTA systems, observability implies …
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An Investigation into Contrail Observability from Different Satellite Platforms
… and greater spatial coverage. Limitations of the observability of contrails in the resulting images have not been sufficiently investigated and need to be assessed and quantified. This study aims to leverage the higher spatial resolution of VIIRS satellite imagery to identify potential limitations …
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Spacecraft Trajectory Planning for Optimal Observability using Angles-Only Navigation
… angles-only navigation to develop optimal range observability maneuvers and trajectory planning methods for spacecraft under constrained relative motion. The resulting contribution is a guidance method for impulsive rendezvous and proximity operations valid for elliptic orbits of arbitrary …
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The Relationship Between Rater Agreement, Behavioral Observability and Overall Impressions
… believed to influence rater agreement: observability and difficulty. The first goal of this study was to replicate the findings of Roch, Paquin and Littlejohn (2009), which found that rater agreement was negatively related to item observability (Hypothesis 1) and rating difficulty …
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Self-attention policy architectures for reinforcement learning under partial observability
… robustness under conditions of high partial observability on different rein-forcement learning benchmark tasks, and explore the advantages and disadvantages offered by our solution over conventional policy architectures. Additionally, we propose a novel hard attention mechanism, used in …
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Invertibility and observability of switched systems with inputs and outputs
… we analyze the properties of invertibility and observability for switched systems and study their related applications in system design. The common facet to both these problems involves the extraction of unknown variables from the knowledge of the output. It is well known that, under certain …
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Deep Memory Models and Efficient Reinforcement Learning under Partial Observability
Reinforcement learning is a framework for optimal decision making that considers the long-term consequences of actions. Deep variants of reinforcement learning have emerged as powerful tools for decision making in complex environments. Prior work has mastered complex games like Go and Atari, …
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