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Algorithms and applications for approximate nonnegative matrix factorization
TLDR
The development and use of low-rank approximate nonnegative matrix factorization (NMF) algorithms for feature extraction and identification in the fields of text mining and spectral data analysis. Expand
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Nonnegative matrix factorization for spectral data analysis
Data analysis is pervasive throughout business, engineering and science. Very often the data to be analyzed is nonnegative, and it is often preferable to take this constraint into account in theExpand
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Document clustering using nonnegative matrix factorization
TLDR
A methodology for automatically identifying and clustering semantic features or topics in a heterogeneous text collection is presented. Expand
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Object Characterization from Spectral Data Using Nonnegative Factorization and Information Theory
The identification and classification of non-imaging space objects, and ultimately the determination of their shape, function, and status, is an important but difficult problem still to be resolved.Expand
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Matching highly non-ideal ocular images: An information fusion approach
TLDR
This work was sponsored under IARPA BAA 09-02 through the Army Research Laboratory and was accomplished under Cooperative Agreement Number W911NF-10-2-0013. Expand
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Mobile apps for the greater good: a socially relevant approach to software engineering
TLDR
The Wake Forest University Computer Science Department has been using mobile device programming, agile methods, and real-world, socially relevant projects for teaching software engineering in a liberal arts Computer Science curricula. Expand
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Iris Segmentation for Challenging Periocular Images
TLDR
This chapter discusses the performance of five different iris segmentation algorithms on the Face and Ocular Challenge Series (FOCS) Database on challenging periocular images. Expand
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Engineering the pupil phase to improve image quality
TLDR
Using the Strehl ratio as a measure of image quality, we propose tailoring the pupil phase profile by minimizing the sensitivity of the quality of the phase-encoded image of a point source to both its lateral and longitudinal coordinates. Expand
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High‐resolution imaging using integrated optical systems
TLDR
We propose a novel and effective multiple‐design‐parameter approach for optimizing the processes of encoding and decoding the wavefront phase in integrated optical‐digital imaging systems. Expand
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