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.
Results
Showing 1 to 20 of 29 for “"Data release"”.
-
Random Sequential Encoders for Private Data Release in NLP
There are many scenarios that motivate data owners to outsource the training of machine learning models on their data to external model developers. While doing so, it is of data owners’ best interests to keep their data private - meaning that no third party, including the model developer, can learn …
-
New guarantees for cryptographic circuits and data anonymization
… watermarking cryptographic circuits, updatable cryptographic circuits, and proxy reencryption. The second part is dedicate to advancing the understanding of data anonymization. We examine what it means for a data anonymization mechanism to prevent singling out in a data release, a …
-
Monitoring Broad Absorption-Line Quasar Variability
… iv BALs in their spectra, by comparing archival data in the SDSS Data Release 7 to the BOSS Data Release 9 and 10. After visually defining a set of emergent BALs, follow-up observations were obtained with the Gemini Observatory for 105 quasars. BALs were formally detected in all but two of the …
-
A catalog of new eclipsing binaries in the Kepler database
… discovered in the publicly available Kepler database, none of which were included in previous such catalogs published by the Kepler science team. A brief review of other binary star catalogs is given, including the Prs̆a et al. catalog on which we are expanding. We detail the means by which …
-
Compact Galactic Neutral Hydrogen Clouds in the GALFA-HI Survey
… to identify compact clouds in the GALFA-HI Data Release 1. Based on position, velocity, and linewidth we separated the 1964 identified clouds into five populations: galaxy candidates, high-velocity clouds, cold low-velocity clouds, warm low-velocity clouds, and warm positive low-velocity …
-
Modeling large scale structure from photometric surveys
… compact galaxy groups selected from the seventh data release of the Sloan Digital Sky Survey. The galaxy sample was selected with r-band apparent magnitudes between 17 and 21; and we update the flag criteria to select a clean galaxy catalog and detail specific tests that we perform to …
-
Activity and kinematics of low mass stars
… dwarfs from the Sloan digital Sky Survey (SDSS) Data Release 7. This new analysis explores the spatial distribution of these M dwarf properties as a function of vertical distance from the Galactic plane (Z) and distance from the Galactic center (R). We confirm the established trends of decreasing …
-
Privacy-Preserving and Robust Data Analytics under Distributed Settings
In the face of exponential data growth and stringent privacy regulations, safeguarding sensitive information within data processing and analytics workflows, especially in distributed systems, has become paramount. High-profile data breaches and privacy regulations like the General Data Protection …
-
Generative Modeling with Guarantees
… leveraging large amounts of unlabeled data and fine-tuning for downstream tasks. However, concerns have been raised regarding the accuracy and trustworthiness of the text generated by these models. In parallel, differential privacy has emerged as a framework to protect sensitive …
-
Understanding Type Ia Supernovae Through Their Host Galaxies Using the SDSS-II Supernova Survey
… which will be published in the upcoming final data release of the Supernova Survey. In addition, I present work in which I compute the luminosity functions for Type Ia supernovae and their host galaxies. This work and continuing work in this vein can help shed light on the nature of dark energy …
-
Probing the Diversity of Fast Radio Bursts with CHIME/FRB
… FRBs using the CHIME/FRB Catalog 1 data release and the injections system to account for observational biases. I discover that CHIME/FRB is likely observationally biased against bursts originating from turbulent local environments, and constrain the energy and distance distributions …
-
Automatic detection of periodic sources in the K2 data sets
… for the detection of periodic sources in the K2 data sets. Fast discreet Fourier transformations are used to compute the Fourier spectra of the targets and two different detection algorithms for identifying significant signals are used. The first technique searches through the DFT to identify …
-
Data driven urbanism: challenges in implementing open data policy and digital transparency in the City of Cape Town
… in 2014 the City of Cape Town adopted an open data policy, which was later coupled with an open data portal to make government data available for public access. This was touted as a novelty initiative as the City of Cape Town was the first African city to implement a policy of this nature. This …
-
A synoptic survey of narrow quasar absorption lines from the Sloan Digital Sky Survey
… observations from the Sloan Digital Sky Survey Data Release 7 (SDSS DR7) provide an unprecedented opportunity to study the properties of thousands of quasar absorption lines (QALs) in the time domain. Systems of QALs have proven to be one of the most sensitive and unbiased probes of baryonic …
-
Measurements and implications of the SDSS DR7 galaxy angular power spectrum
… from the Sloan Digital Sky Survey (SDSS) Data Release 7 (DR7) by using a quadratic estimation method with KL-compression. The primary data sample includes over 18 million galaxies covering more than 5,700 square degrees after masking areas with bright objects, reddening greater than 0.2 …
-
Phase Space Structure of Disequilibrium in the Milky Way
Following Gaia Data Release 2, observations of spiral structure in the vertical phase space of the Milky Way have been made. In this thesis we set out to explain these structures, using a combination of analytic modeling, simulations, and Dynamic Mode Decomposition to study explicitly their …
-
Post-processing in Differential Privacy
In recent years, the prominence of data privacy concerns has surged alongside the unprecedented growth in large-scale data collection and analysis. Since its introduction in 2006, differential privacy has rapidly emerged as the gold standard for addressing these escalating privacy challenges in …
-
Bulges and Disks in the Nearby Universe: Applications to Evolution and Formation of Galaxies
… drawn from the Sloan Digital Sky Survey (SDSS) Data Release 7. Fits are performed for the SDSS r-band utilizing the fitting routine Galfit and analysis pipeline PyMorph. Simulations are used to test the two-dimensional decompositions of SDSS galaxies. We compare these fits to prior catalogs and …
-
The automated detection and multiwavelength properties of LADUMA HI galaxies
… over the low redshift Early Science LADUMA data cube using the SoFiA-2 algorithm. The source finding mask created in this work will be used to clean the first public data release of the LADUMA data cubes, which will be outlined in an upcoming paper. We present the confirmed SoFiA-2 …
-
Development of computational approaches for whole-genome sequence variation and deep phenotyping
… implemented extensions provide a programmatic data transfer and an automated data release pipeline for analysis ready data. The second part is dedicated to the discovery of novel disease genes in PAH. I focus on one well characterised PAH disease gene to establish variant filter strategies to …
Page 1 of 2