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 89 for “"data retrieval"”.
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Supporting Ranking for Data Retrieval
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2005.
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Enabling Data Retrieval: By Ranking and Beyond
This thesis further studies how to enable retrieval mechanisms beyond just ranking. Our explorative study in this direction is exemplified by two novel proposals---One is to integrate clustering and ranking of database query results; the other is to support inverse ranking queries that provide …
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Low latency data retrieval solutions for big data
… are moving towards peta and exascale data sets, it has become increasingly important to develop more efficient data retrieval and storage mechanisms that will aid in reducing network traffic, server load, as well as minimizing user perceived retrieval delays. We propose an Intelligent …
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Learning the process of World Wide Web data retrieval
We develop a method for extracting and internalizing web site form submissions which we refer to as web operations. To begin the process, a user performs a sample submission of the form. From that submission, our system determines all of the necessary information to store the web operation. Through …
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Toward Flexible User Interaction in Content-Based Multimedia Data Retrieval
… discusses various aspects of digital image retrieval and management. First, we discuss user interface and visualization for digital image management. Two innovative systems are proposed. 3D MARS is immersive 3D display for image visualization and search systems. The user browses and searches …
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Data retrieval in MIMO systems and the effects of correlation on the channel capacity
… field in the wireless field; as capacities of data are increased based on the inherent capability of the technology, without an increase in spectrum bandwidth.This thesis analyses the ways through which data sent over some channel from a number of transmitters are recovered at the intended …
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Biomedical data retrieval utilizing textual data in a gene expression database by Richard Lu, MD.
… in both the amount of genomic and clinical data that is available. Descriptive textual information deposited with gene expression data in the Gene Expression Omnibus (GEO) is an underutilized resource because the textual information is unstructured and difficult to query. Rendering this …
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Column Store Database - A New Approach to GIS Application
… to model the world. However, with the growth of data and increasing sophistication of analy- sis and processing techniques, the traditional methods of performing GIS processing on desktops are insucient. This thesis addresses this issue by studying the applicability of Column-store databases for …
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Improved access to large medical databases for clinical research and quality improvement
Computerized medical databases are now commonplace in healthcare environments. Information is routinely stored for each clinical encounter, be it an inpatient, outpatient, telephone, or even computer-based interaction. In the past, the vast majority of this data concerned the demographic and …
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High-Dimensional Generative Models for 3D Perception
… and interpreting the three-dimensional data of the real world. Understanding the world's geometric structure by visual data is known as 3D perception. The necessity of analyzing irregular and complex 3D data has led to the development of high-dimensional frameworks for data learning. …
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CyberWater: An Open Framework for Data and Model Integration
… Systems (WMSs). Against the backdrop of data-intensive and complex models, CyberWater exemplifies the transition of intricate data into insightful and actionable knowledge and introduces the nuanced architecture of CyberWater, particularly focusing on its adaptation and enhancement from …
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Autonomous wireless smart sensor for monitoring of railroad bridges
… the need for a human-in-the-loop for remote data retrieval and post-processing. An adaptive strategy combining an event-based scheme, scheduled rendezvous framework, and preemptive multitasking operation is implemented in the proposed system. The robust monitoring strategy is designed to …
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An Efficient Storage And Retrieval Mechanism For Large Unstructured Grids
The size of spatial scientific datasets is steadily increasing due to improvements in instruments and availability of computational resources. Scientific datasets today are often far too large to fit into a single machine's memory or even a single disk. However, much of the research on efficient …
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Speech/Music Discrimination: Novel Features in Time Domain
… and music in the time domain for the purpose of data retrieval. The study used speech and music data that were recorded in standard anechoic chambers and sampled at 44.1 kHz. Two types of new features were found and thoroughly examined: the Ratio of Silent Frames (RSF) feature and the Time Series …
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Access Path Optimization for Network Database Retrieval (Query, Relational, Codasyl)
In evaluating a query using a network database, the links need to either be followed or be saved. Most of the previous approaches follow the links in evaluating a query using a network database. Actually, it is not always necessary to follow the links in answering a query using a network database, …
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Compression and phase reconstruction of temporal fringe pattern data
… of analysis, nevertheless, necessitates large data storage and processing time for the fringe pattern intensity and deformation phase. Current compression schemes do not facilitate efficient data retrieval and may even result in important data loss. In this project, novel compression schemes …
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Clustering of Database Query Results
<p>Increasingly more users are accessing database systems for interactive and exploratory data retrieval. While performing searches on these systems, users are required to use broad queries to get their desired results. Broad queries often result in too many items forcing the user to spend …
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Visualization for Verification Driven Learning in Database Studies
<p>This thesis aims at developing a data visualization tool to enhance database learning based on the Verification Driven Learning (VDL) model. The goal of the VDL model is to present abstract concepts in the contexts of real-world systems to students in the early stages of computer science …
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Oblivious RAM in Scalable SGX
… been introduced to protect program execution and data in the cloud. However, an attacker targeting the cloud storage server through side-channel attacks can still learn some data in TEEs. This data retrieval is possible through the monitor- ing and analysis of the encrypted ciphertext as well as a …
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