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 55 for “"Extractors"”.
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Seedless Extractors
… so pure. This motivates the study of randomness extractors, which are deterministic algorithms that convert weak sources of randomness into uniformly random bits. The study of extractors dates back over 70 years, and has blossomed into a beautiful theory with deep connections to cryptography, …
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Optimal Codes and Entropy Extractors
… of random number generation, we analyse linear extractors and their connection with linear codes. The main result on this topic is a link between code parameters and the entropy rate obtained by a processed random number generator. More precisely, to any linear extractor we can associate the …
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Comparative simulations of conceptual ion extractors for use in asymmetric inertial electrostatic confinement
… set to an 8 kV bias with the charged elements of extractors set to 6 kV. The outer shell and exit sampling domain is set to ground potential. Ions are introduced into the IEC perpendicular to the exit channel, reflecting similar conditions in the actual HIIPER experiment. Ions are introduced at 2 …
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Re-Innovation Nation: The Strategic and Political Logic of Technology Transfer Policy in Rising China
… transfer behavior. First, China’s use of tech extractors rose sharply in the years after it joined the World Trade Organization (WTO) in 2001, only to fall equally dramatically after 2015. Second, within this broad-based increase after 2001, there was surprising variation across industries in …
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Exploratory relation extraction in large multilingual data
… Extraction (RE) is concerned with creating extractors that automatically find structured, relational information in unstructured data such as natural language text. Motivated by an explosion of sources of readily available text data such as the Web, RE offers intriguing possibilities for …
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The method of multiplicities
… codes, pseudorandom generators and randomness extractors. Somewhat strikingly, polynomials have also been found to be a powerful tool in the analysis of combinatorial parameters of objects that have some algebraic structure. This method of analysis has found applications in works on …
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Images in motion?: a first look into video leakage in federated learning
… approaches: one employing pre-trained feature extractors and another that processes raw video frames with simple transformations. Our results indicate that the use of feature extractors offers greater resilience against gradient inversion attacks. We also demonstrate that image super-resolution …
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Liquid-Liquid Extraction in Agitated Contactors Involving Droplet Coalescence and Redispersion
Rotary agitated liquid-liquid extractors have been classified in terms of the rate of energy imparted to the dispersed phase, and whether contact is stagewise or differential. In the high energy contactors a droplet coalescence-redispersion mechanism predominates, The literature pertaining to these …
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Maintaining secrecy when information leakage is unavoidable
… tools from complexity theory known as randomness extractors.
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Evaluating knowledge transferability in chess endgames using deep neural networks
… wants to transfer only the general feature extractors and leave the specific ones behind. The general features in the case of image classification can be considered local with respect to each pixel, since the feature extractors in early layers activate on simple features like edges, which …
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Embedding a Multimedia Metadata Model into a Workflow-driven Environment Using Idiomatic Semantic Web Technologies
… instance that connects autonomous multimedia extractors in a workflow-driven fashion. This leads to a rich metadata background for the inserted multimedia files, enabling them to be used in diverse scenarios as well as unlocking yet hidden semantics. For this task it was necessary to design …
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Kakeya sets and the method of multiplicities
… factors in n. 2. We give improved randomness extractors and "randomness mergers". Mergers are seeded functions that take as input A (possibly correlated) random variables in {0, 1}N and a short random seed and output a single random variable in {0, 1}N that is statistically close to having …
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Feature extractor stacking for cross-domain few-shot learning
… for combining information from a collection of extractors, that can utilise heterogeneous pretrained extractors out of the box and does not maintain a universal model that needs to be re-computed when its extractor collection is updated. We present the basic FES algorithm, which is inspired by …
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Lipreading with convolutional and recurrent neural network models
… the convolutional layers serve as feature extractors. The performance of each model is experimentally evaluated and the detailed network structure and preprocessing pipeline are demonstrated.
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Algebraic methods in pseudorandomness and circuit complexity
… geometry to prove new results concerning extractors for algebraic sets, AC⁰-pseudorandomness, the recursive Fourier sampling problem, and VC dimension. We present a new construction of an extractor which works for algebraic sets defined by polynomials over F₂ of substantially higher degree …
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Improving information extraction by acquiring external evidence with reinforcement learning
… our system significantly outperforms traditional extractors and a competitive meta-classifier baseline
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An Exploration of Multimodal Document Classification Strategies
… state-of-the-art text and image feature-extractors with state-of-the-art classifiers. Meta-classifiers fuse information across modalities that differ in nature and hence have more information on hand to make decisions. This thesis also discusses strategies that exploit correlations not …
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Minimalist Approach to End-to-End Vision Language Navigation with Multi-Modal Foundation Model Features
… foundation models as patch-wise feature extractors, avoiding data and compute heavy fine-tuning and cumbersome language model reasoning. Our lightweight control policies (∼ 10⁵ trainable parameters) are trained on a compact dataset of language-based specified navigational behaviors (∼ 10² …
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Fundamental factors affecting the extraction efficiency in a pulse liquid-liquid extractor
… a review of the available information on pulse extractors. Although a great deal of literature was available on the topic of liquid-liquid extraction, detailed information on only two pulse extractors could be found. The results obtained during this investigation compare favorably with those …
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