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Two-Step Wavestrapping: Simulating Non-Stationary Acceleration Data in the Mobile Computing Context
(Georgia Institute of Technology, 2005-12-16)
Measurements of acceleration provide an important source of information in understanding and predicting the movements of mobile computer users. However, collecting acceleration data can require substantial time and resources ...
Bayesian Decision Theoretic Scale-Adaptive Estimation of a Log-Spectral Density
(Georgia Institute of Technology, 2003)
The problem of estimating the log-spectrum of a stationary Gaussian time series by Bayesianly induced shrinkage of empirical wavelet coefficients is studied. A model in the wavelet domain that accounts for distributional ...
Wavelet-based 2D Multifractal Spectrum with Applications in Analysis of Digital Mammography Images
(Georgia Institute of Technology, 2007-07-26)
Breast cancer is the second leading cause of death in women in the United States and at present, mammography is the only proven method that can detect minimal breast cancer. On the other hand, many medical images demonstrate ...
Multifractal Discrimination Model of High-Frequency Pupil-diameter Measurements
(Georgia Institute of Technology, 2003-10-10)
Multifractality present in high frequency pupil diameter measurements, usually connected with irregular scaling behavior and self-similarity, is modeled with statistical accuracy. A multifractal spectrum is used to ...
Resampling hierarchical processes in the wavelet domain: A case study using atmospheric turbulence
(Georgia Institute of Technology, 2004-05-20)
There is a growing need for statistical methods that generate an ensemble of plausible realizations of a hierarchical process from a single run or experiment. The main challenge is how to construct such an ensemble in a ...
Classification of High Frequency Pupillary Responses using Schur Monotone Descriptors in Multiscale Domains
(Georgia Institute of Technology, 2004-09-21)
This paper addresses the problem of classifying users with different visual abilities based on their pupillary response data while performing computer-based tasks. Multiscale Schur Monotone (MSM) summaries of high frequency ...
The Effectiveness of Sealants in Managing Carious Lesions
(Georgia Institute of Technology, 2007)
A barrier to providing sealants is concern about inadvertently sealing over caries. The objective of this meta-analysis was to examine whether sealants are effective in preventing caries progression. Methods: Our search ...
Bayesian False Discovery Rate Wavelet Shrinkage: Theory and Applications
(Georgia Institute of Technology, 2005)
Statistical inference in the wavelet domain remains vibrant area of contemporary statistical research because desirable properties of wavelet representations and the need of scientific community to process, explore, and ...
Wavelet-Based Estimation of a Discriminant Function
(Georgia Institute of Technology, 2002)
In this paper we consider wavelet-based binary linear classifiers. Both consistency results and implementational issues are addressed. We show that under mild assumptions on the design density wavelet discrimination rules ...
Wavelet-based 3-D Multifractal Spectrum with Applications in Breast MRI Images
(Georgia Institute of Technology, 2008)
Breast cancer is the second leading cause of death in women in the United States. Breast Magnetic Resonance Imaging (BMRI) is an emerging tool in breast cancer diagnostics and research, and it is becoming routine in clinical ...