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 43 for “"information fusion"”.
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Information fusion in taxonomic descriptions
Providing a single access point to an information system from multiple sources is helpful in many fields. As a case study, this research investigates the potential of applying information fusion techniques in biodiversity area since researchers in this domain desperately need information from …
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Information Fusion for Robust Audio -Visual Speech Recognition
… to some extent. However, integrating these information sources to achieve performances superior to any single modal alone remains a challenging problem. Humans naturally and effortlessly perform sensory information fusion. The most important human-to-human communication tool is speech. …
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Increasing DBM Reliability using Distribution Independent Tests and Information Fusion Techniques
In deformation based morphometry (DBM) group-wise differences in brain structure are measured using deformable registration and some form of statistical test. However, it is known that DBM results are sensitive to both the registration method and statistical test used. Given the lack of an …
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Information fusion schemes for real time risk assessment in adaptive control systems
… failure conditions. We investigated data fusion techniques suitable for the analysis of neural network monitors. Monitor outputs are fused into a measure of confidence, indicating the belief in the correctness of failure accommodation mechanism provided by the neural network. We …
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Information Fusion Approaches for Distant Speech Recognition in a Multi-microphone Setting
… given the potential of taking advantage of information diversity. In this thesis we elaborate on approaches that exploit different instances of a sound source, captured by various largely spaced microphones, in order to extract a Distant Speech Recognition hypothesis. Two original solutions …
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Information fusion architectures for security and resource management in cyber physical systems
… the data collected through the embedded sensors, information acquisition from the data plays an extremely vital role in determining the operational stability of the CPS. Data collection process may be hindered by disturbances such as system faults, noise and security attacks. Hence, simple data …
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Dynamic Bayesian Networks for Information Fusion With Applications to Human-Computer Interfaces
Recent advances in various display and virtual technologies coupled with an explosion in available computing power have given rise to a number of novel human-computer interaction (HCI) modalities---speech, vision-based gesture recognition, eye tracking, EEG, etc. However, despite the abundance of …
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Information-fusion-based methods to improve the detection of advanced cyber threats
The increasing adoption of information and communication technologies in every aspect of modern life has made the security of networked systems more crucial. Their growing size and complexity have provided adversaries with a larger attack surface leading to numerous breaches in recent years that …
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Information fusion for an unmanned underwater vehicle through probabilistic prediction and optimal matching
This thesis presents a method for information fusion for an unmanned underwater vehicle (UUV).We consider a system that fuses contact reports from automated information system (AIS) data and active and passive sonar sensors. A linear assignment problem with learned assignment costs is solved to …
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Automated Graph-Based Data Integration and Information Fusion: An Open-Source Ecosystem of Tools With a Focus on Maintainability and Usability
Information is a vital part of research. While there are likely exceptions, almost all research projects process or produce data, or both. Storage of information in digital form provides many advantages, such as large capacities or easy and immediate access across locations. However, new challenges …
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A digital identity management system
… way they do business and manage their identity information. The coming of the online services has however made most Internet users vulnerable to identity fraud and theft. This has resulted in a subsequent increase in the number of reported cases of identity theft and fraud, which is on the …
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An architectural selection framework for data fusion in sensor platforms
The role of data fusion in sensor platforms is becoming increasingly important in various domains of science, technology and business. Fusion pertains to the merging or integration of information towards an enhanced level of awareness. This thesis provides a canonical overview of several major …
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State Omniscience for Cooperative Local Catalog Maintenance of Close Proximity Satellite Systems
… decentralized architectures place the burden of information acquisition directly on the agents themselves. In fact, the design of distributed estimators has been a growing interest to enable complex multi-sensor/multi-agent tasks. In such scenarios, it is important that each local estimator …
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Active-passive dynamic consensus filters: Theory and applications
… action based system theoretic distributed information fusion methods. Specifically, the main contribution is a new class of dynamic consensus filters, termed active-passive dynamic consensus filters, in which agents are considered to be <i>active</i>, if they are able to sense an exogenous …
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Semantic concept detection from visual content with statistical learning
… can be employed; second, proposed two flexible information fusion methods for fusing diverse visual features and multiple modalities.
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Frugal hypothesis testing and classification
… reduction approach is extended for information fusion in sensor networks. A new distortion is proposed for the quantization or clustering of prior probabilities appearing in the thresholds of likelihood ratio tests. This distortion is given the name mean Bayes risk error (MBRE). The …
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Developments for the Characterization of Spacecraft Proximity Operations for Improved Space Situational Awareness
… evaluation tool, is introduced in order to fuse information sources together. Various combinations of relative orbital dynamics, vehicle characteristics, and environmental conditions can be used to determine the potential intent of these close proximity operations. First, a baseline framework is …
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DATA FUSION ARCHITECTURES FOR UNDERSEA WARFARE WITH AUTONOMOUS UNDERWATER VEHICLES
… presents a baseline architecture for a data fusion system that facilitates the near real-time exchange of information from disparate sources. This architecture, in turn, provides a basis for further system development, and guides future studies of relevant data/information fusion concepts and …
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A Modelling approach for evaluating the ranking capability of Situational Awareness System in real time operation. Modelling, evaluating and quantifying different situational assessment in real time operation, using an analytical approach for measuring the ranking capability of SWA system
… the analyst team need timely and accurate information to conduct proactive action over complex situations. Typically, there are thousands of reported activities in a real time operation, therefore steps are taken to direct the analyst’s attention to the most important activity. The data …
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Multifidelity methods for multidisciplinary design under uncertainty
… key contributors. As fidelity level increases, information from the lower fidelity models is used to complement the higher fidelity results through information fusion instead of being discarded, a more traditional approach in multifidelity optimization. This research expands on the previously …
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